ESwitching Practice Final Exam 005

ESwitching Practice Final Exam 05-Jan-2011

1 What identifier in the BPDU creates a unique BID for a switch?

IP address

MAC address

bridge priority

VLAN ID

port priority

Observable Description Max Value

1 correctness of response 2 points for Option 2

0 points for any other option 2

This item references content from the following areas:

CCNA Exploration: LAN Switching and Wireless

5.2.3 Bridge ID

2

Refer to the exhibit. Which two facts can be confirmed by this output? (Choose two.)

This switch shows no configuration revision errors.

This switch has established two-way communication with the neighboring devices.

This switch is configured to advertise its VLAN configuration to other VTP-enabled switches in the same VTP domain.

This switch will drop all VTP advertisements that come from the switches that are configured in the same VTP domain.

This switch will cause no disruption in the VTP domain operations if the rest of the switches in the same VTP domain

have a higher configuration revision number.


1 correctness of response Option 3 and Option 5 are correct.

1 point for each correct option.

0 points if more options are selected than required. 2



4.3.3 Managing VLANs on a VTP Server

3 What VLANs are allowed across a trunk when the range of allowed VLANs is set to the default value?

All VLANs will be allowed across the trunk.

Only VLAN 1 will be allowed across the trunk.

Only the native VLAN will be allowed across the trunk.

The switches will negotiate via VTP which VLANs to allow across the trunk.






4.2.5 VTP Pruning

4

Refer to the exhibit. The network administrator enters the configuration shown to allow both SSH and Telnet

connections to the switch. The Telnet connections fail. What is the most likely cause of this problem?

The SSH version number is wrong.

SSH has been configured on the wrong line.

Telnet and SSH cannot be configured simultaneously.

The transport input command is configured incorrectly.






2.4.3 Configure Telnet and SSH

5 Why is it important that the network administrator consider the spanning-tree network diameter when choosing the

root bridge?

The network diameter limitation is 9.

BPDUs may be discarded because of expiring timers.

The cabling distance between the switches is 100 meters.

The network diameter must be set to the number of meters of the cable between the root bridge and its farthest

connected switch.






5.2.5 STP Port States and BPDU Timers

6

Refer to the exhibit. Which statement is true regarding the information shown?

Only one VLAN is currently configured to use the trunk links.

The switch negotiated trunk links for interfaces Fa0/1 and Gi0/1.

A Cisco proprietary protocol is in use for interfaces Fa0/1 and Gi0/1.

Interfaces Gi0/1 and Fa0/1 are allowed to carry data from multiple VLANs.






3.2.3 Trunking Modes

7

Refer to the exhibit. Computer A sends a broadcast message. Which devices will see the broadcast?

computer B

computer B and Router1

computer C and Router1

computer B, computer D, computer E and Router1

computer B, computer C, computer D, computer E and Router1

computer A, computer B, computer C, computer D, computer E and Router1






3.1.4 Controlling Broadcast Domains with VLANs

8 Which statement regarding the service password-encryption command is true?

The service password-encryption command is entered at the privileged EXEC mode prompt.

The service password-encryption command encrypts only passwords for the console and VTY ports.

The service password-encryption command encrypts all previously unencrypted passwords in the running configuration.

To see the passwords encrypted by the service password-encryption command, enter the no service password-encryption

command.






2.4.1 Configure Password Options

9 Which three statements are correct concerning the default configuration of a new switch? (Choose three.)

Spanning Tree Protocol is disabled.

Enable password is configured as cisco.

All switch ports are assigned to VLAN1.

The flash directory contains the IOS image.

VLAN1 is configured with a management IP address.

All interfaces are set to auto-negotiation of speed and duplex.


1 correctness of response Option 3, Option 4, and Option 6 are correct.





3.3.2 Configure a VLAN

10

Refer to the exhibit. What three statements describe why Host1 and Host2 are unable to communicate? (Choose three.)

The switch ports are on different VLANs.

The switch IP address is on the wrong subnet.

The hosts are configured on different logical networks.

A router is required to forward traffic between Host1 and Host2.

The VLAN port assignments must be contiguous for each VLAN.

The host default gateway addresses must be on the same logical network.







6.1.1 Introducing Inter-VLAN Routing

11 What is the correct order in which the STP components are chosen?

designated ports, nondesignated ports, root bridge, root ports

nondesignated ports, designated ports, root ports, root bridge

root bridge, root ports, designated ports, nondesignated ports

root ports, root bridge, nondesignated ports, designated ports






5.3.1 STP Convergence

12 Which statement is correct about STP architecture?

Spanning Tree Protocol will guarantee a loop free Layer 2 topology.

Spanning Tree Protocol guarantees the shortest path to destination networks.

The switch with the highest priority will be assigned the lowest BID in the root election.

The first step in the spanning-tree election process is to determine the root port.

To select designated ports, the spanning-tree algorithm must determine the longest contiguous path from the root

bridge.






5.2.1 The Spanning Tree Algorithm

13 A network administrator is asked to connect four switches that are each configured with eight VLANs. Routers that

have two FastEthernet ports each that support trunking are available. What is the minimum number of routers needed

to interconnect traffic from all of the VLANs if trunking is allowed?

1

2

4

8

16






6.1.2 Interfaces and Subinterfaces

14

Refer to the exhibit. Router R-West and switch S-West1 are connected via a single ethernet cable between the router

interface fa0/0 and the switch interface fa0/1. The router and switch have been configured with the commands that are

displayed in the exhibit. The network administrator enters the show interfaces trunk command and receives the output

as shown. What is the cause of the "not-trunking" status for switch port Fa0/1?

The trunk is established, but no VLANs have been configured to use it.

The router is missing the dynamic trunking protocol statements necessary to form a trunk.

Because the router does not support Dynamic Trunking Protocol, the trunk has not been established.

The router, the switch, or both must be configured with the dynamic desirable option for Dynamic Trunking Protocol to

establish a trunk.






6.2.2 Configure Router-on-a-Stick Inter-VLAN Routing

15 After unpacking a new Linksys WRT300N wireless multifunction device, a user needs to change the default

administrator password and make other configuration changes. What must the user do to access the device in order to

make these changes?

Use a wireless client to associate with the WRT300N and then open a HyperTerminal session with the device.

Establish a wired connection with the device and then reboot the attached computer to launch the configuration

software.

Establish a wired connection from a computer in the same IP subnet as the WRT300N and enter the default IP address

of the device into a web browser on the computer.

Modify the TCP/IP properties of the computer that is connected to the WRT300N so that the computer and the

WRT300N exist on the same network. Then reboot the computer to establish a connection.






7.3.1 Configuring the Wireless Access Point

16

Refer to the exhibit. How is port Gi1/1 on SWT-A functioning in the spanning-tree topology?

It is sending and receiving data frames.

It is receiving BPDUs, but not sending data frames.

It is participating in the election process by forwarding the BPDUs it receives.

It is receiving BPDUs and populating the MAC address table, but not sending data.






5.4.6 RSTP Port States and Port Roles

17

After listening for the presence of a signal on the network media, hosts A and C transmit data at the same time. In what

two ways do the hosts respond to this situation? (Choose two.)

The hosts transmit a jam signal to ensure that all hosts on the network are aware that a collision has occured.

Because they are operating in full-duplex mode, the hosts resume listening for traffic in preparation for sending future

messages.

Because the hub will temporarily block traffic from one of the hosts, that host will be allowed to transmit once the wire

is clear.

Hosts A and C are assigned shorter backoff values to provide them priority to access the media for retransmission.

After the backoff period of a host, the host checks to determine if the line is idle before retransmitting.







2.1.1 Key Elements of Ethernet/802.3 Networks

18

Refer to the exhibit. The switches have been configured as shown. The hosts that are connected to switch 101-2FL are

not able to communicate with the hosts in their corresponding VLANs that are connected to switch 101-3FL. What

should be done to fix the problem?

Configure port Fa0/2 on switch 101-3FL as a static trunk link.

Introduce a Layer 3 device or a switch with Layer 3 capability into the topology.

Utilize the switchport trunk allowed vlan all command on switch 101-3FL to permit the VLAN traffic.

Apply IP addresses that are in the same subnet to the interfaces that are used to connect switches 101-2FL and 101-

3FL.






3.3.4 Configure a Trunk

19

Refer to the exhibit. RTB is configured for traditional inter-VLAN routing. RTB can ping computer A but cannot ping

computer B. What is a possible cause of this failure?

Port Fa0/11 is in the wrong VLAN.

RTB does not have an active routing protocol.

The IP address of computer B is in the wrong logical network.

Router interface Fa0/1 has the wrong trunk encapsulation type configured.






6.3.1 Switch Configuration Issues

20

Refer to the exhibit. A new host needs to be connected to VLAN 20. Which IP address should be assigned to this new

host?

172.16.10.68 /27

172.16.10.99 /28

172.16.10.110 /27

172.16.30.96 /27

172.16.30.120 /28

172.16.30.146 /27







21

Refer to the exhibit. Router R1 is connected to a switch through a trunk. What two ways are indicative of how the router

handles incoming VLAN traffic? (Choose two.)

Data from VLAN 20 is not being routed.

Incoming traffic with VLAN ID 1 is processed by interface Fa0/0.

Incoming traffic that has a VLAN ID of 10 is processed by subinterface Fa0/0.1.

VLAN traffic is processed on the subinterfaces even if Fa0/0 line protocol goes down.

The router uses a unique MAC address on VLAN 10 and 20 by adding the 802.1Q VLAN ID to the hardware address.

Traffic inbound on this router is processed by different subinterfaces depending on the VLAN from which the traffic

originated.







6.3.2 Router Configuration Issues

22

Refer to the exhibit. What is the purpose of the configuration commands that are shown?

to activate port Fa0/10

to make the port a member of VLAN 30

to activate port security on port Fa0/10

to add VLAN 30 to the trunk that is connected to port Fa0/10







23 Which parameter is associated with wireless authentication?

shared key

SSID

ad hoc

channel






7.1.4 Wireless Operation

24 Where is the information of newly created VLANs stored on a switch?

CPU

flash

NVRAM

RAM






3.1.1 Introducing VLANs

25

Refer to the exhibit. Both switches are configured with default bridge priority. Which port will act as the STP root port if

all links are operating at the same bandwidth?

Fa0/1 interface of S1









5.2.4 Port Roles

26 Which statement correctly describes the spanning-tree path cost?

It is calculated based on the total number of switches connected in a loop.

It is calculated based on the utilization of all the switches along a given path.

It is calculated based on the bridge priority of the switches along a given path.

It is calculated based on the sum of the port cost value, determined by link speed, for each switch port along a given

path.







27

Refer to the exhibit. The network administrator is planning five additional VLANs to be shared throughout the VTP

domain on S3. What action should the administrator take before creating the additional VLANs?

Create the VLANs on a switch in VTP server mode and allow them to propogate to the other switches in the domain.

Modify the configuration revision to 10 to support the additional VLANs.

Enable the VTP pruning mode in order to create the VLANs on S3.

Enable the VTP v2 mode.






4.3.1 Configuring VTP

28

Refer to the exhibit. A network administrator enters the displayed commands to configure VLAN 30. What is the result

of running these commands?

VLAN 30 will be added to S1, S2, and S3, but not to S4.

VLAN 30 will be pruned from the VLAN database of S3.

VLAN 30 will be added to the VLAN database of S3 but will not be propagated to S4, S2 or S1.

VLAN 30 will not be added to the VLAN database of S3 and an error message will be displayed.






4.2.5 VTP Pruning

29

Refer to the exhibit. Which password allows the administrator to enter the privileged exec mode?

cisco1

cisco2

cisco3

cisco







30

Refer to the exhibit. The switch VTY lines have been properly configured, but PC1 is unable to remotely manage the

switch. How can this problem be resolved?

Configure the Fa0/1 interface of the switch in trunk mode.

Configure a default gateway on the switch.

Configure the native VLAN on the switch.

Configure the Fa0/1 interface of the switch to allow all VLANs.






2.3.6 Basic Switch Configuration

31

Refer to the exhibit. Both switches are configured as displayed and the native VLAN is the default. Which statement is

true about the frames traveling between host A and host B?

They will travel untagged.

They will be tagged with VLAN ID 1.

They will be tagged with the trunk Port VLAN ID.

They will be tagged with the highest VLAN ID.






3.1.2 Types of VLANs

3.2.1 VLAN Trunks

32

Refer to the exhibit. Assuming the bridge priority values are set to default on all switches, which switch will be elected

as the root bridge of the spanning tree topology?

Cat-A

Cat-B

Cat-C

Cat-D






5.2.3 Bridge ID

33

Refer to the exhibit. The switches in the exhibit have VTP pruning enabled. What will be pruned in the VTP

advertisements from switch ST-C to switch ST-1?

VLAN 30

VLAN 20 and VLAN 30

VLAN 1, VLAN 20, and VLAN 30

VLAN 2 through VLAN 29, and VLAN 31 through VLAN 1000






4.2.5 VTP Pruning

34

Refer to the graphic. In the Wireless menu option of a Linksys integrated router, what does the Network Mode option

Mixed mean?

The router supports encryption and authentication.

The router supports both wired and wireless connections.

The router supports 802.11b, 802.11g, and 802.11n devices.

The router supports connectivity through infrared and radio frequencies.







35 How are data frames identified and sent to the correct VLAN when exiting an Ethernet trunk?

Frames are forwarded to the correct VLAN based on the VLAN tag.

Frames are always forwarded to the native VLAN when exiting a trunk.

Frames are forwarded to the correct VLAN based on the source IP address.

Frames are forwarded to the correct VLAN based on information in the MAC address table.






3.2.2 Trunking Operation

36 When port security is used on a switch, which violation mode will cause an SNMP trap to be sent and traffic to be

dropped when the number of secure MAC addresses for a port is reached?

sticky

protect

restrict

shutdown






2.4.6 Configuring Port Security

37 A wireless LAN access point will convert traffic between which two frame encapsulation types?

802.1 and 802.11

802.3 and 802.11

802.3 and 802.16

802.5 and 802.16






7.1.3 Wireless Infrastructure Components

38 A wireless access point can function as which type of shared medium, wired LAN device?

hub

switch

router

gateway







39

Refer to the exhibit. Users complain that they do not have connectivity to the web server that is connected to SW1. What

should be done to remedy the problem?

Allow all VLANs on the trunk link.

Configure VLAN 100 as the native VLAN for SW1.

Configure the trunk port in trunk mode on SW1.

Attach the web server to a router and configure inter-VLAN routing.






3.4.1 Common Problems with Trunks

40 Which benefit is gained by designing a network with a small network diameter?

lower latency

improved security

increased redundancy

higher interface bandwidth






1.1.2 Principles of Hierarchical Network Design

41

Refer to the exhibit. After receiving a console notification on Switch2, the network administrator begins to troubleshoot

the trunk link between Switch1 and Switch2. Which configuration change can be made to correct the problem with the

trunk link?

Set the Fa0/1 interface on Switch2 to trunk mode.

Change the trunk encapsulation on Switch2 Fa0/1 to dot1q.

Change the native VLAN on Switch2 interface Fa0/1 to VLAN 100.

Change the access mode VLAN on Switch2 to the default VLAN 1.







42 Which configuration changes will increment the configuration revision number on the VTP server?

configuring trunk links on the VTP server

configuring or changing the VTP password

configuring or changing the VTP domain name

configuring or changing the VTP version number

configuring or deleting a VLAN or creating a VLAN name






4.2.3 VTP Advertising

43

Refer to the exhibit. The VTP domain has been configured as shown in the exhibit. None of the configured VLANs on

SW1 and SW2 are present on SW3. What should be done to remedy the problem?

Reconfigure switches SW2 and SW3 in VTP transparent mode.

Reconfigure the VTP password to be consistent on all VTP switches.

Reconfigure all switches as VTP clients to synchronize the VLAN database information.

Reconfigure the VTP server as a VTP client and then return to VTP server mode to reset the configuration revision

number.






4.3.2 Troubleshooting VTP Configurations

44 Using the command copy tftp:backup.cfg startup-config, an administrator downloaded a saved configuration from a

TFTP server to a switch. Why does the administrator not detect any changes in the switch configuration after the

download completes?

The command should have been copy startup-config tftp:backup.cfg.

A backup configuration from a TFTP server cannot be copied directly into the startup-config.

The command copy running-config startup-config should be used to save the changes on the switch.

Downloading to the startup-config requires the switch to be reloaded in order for the configuration to take effect.






2.3.8 Basic Switch Management

45 In setting up a wireless infrastructure network, which device is used to associate a client computer to the network?

an Ethernet switch

a wireless access point

another wireless computer

a hard-wired computer on the network







46 A network administrator enables sticky learning on all access mode interfaces of a Catalyst switch, saves the

configuration, then connects hosts to the switch. After the switch operates for several days, the administrator reboots

the switch without saving the running configuration. What is the result?

All previously learned MAC addresses are lost.

The switch reverts to non-sticky dynamic learning.

Connected hosts are no longer able to communicate with the switch.

Previously learned sticky addresses are retained in the switch configuration.







47 A network technician is evaluating the desirable features of both access and distribution layer switches. Which two

features are common to switches at these two layers? (Choose two.)

QoS

PoE

port security

link aggregation

application based filtering







1.2.3 Switch Features in a Hierarchical Network

48 What impact does the use of the mdix auto configuration command have on an Ethernet interface on a switch?

automatically detects duplex settings

automatically detects interface speed

automatically detects copper cable type

automatically assigns the first detected MAC address to an interface







49 Which service should be disabled on a Cisco switch or router to prevent packet sniffers from capturing information

about the device?

SSH

VTP

CDP

SNMP






2.4.4 Common Security Attacks

50 Which statement is accurate about fast-forward switching?

The switch stores the first 64 bytes of the frame before forwarding.

After reading the destination address, the switch immediately forwards a frame.

The switch receives the complete frame and stores it in buffers before forwarding it.

The switch analyzes the frame for information about its destination. After confirming the integrity of the frame, the

switch forwards it out the correct port.






2.2.1 Switch Forwarding Methods

ESwitching Final Exam - FINAL - A

1 Company policy requires disabling the command history buffer on network devices. An administrator enters terminal

no history size at the command prompt on a Cisco Catalyst switch and receives no error messages back, but the

command history buffer is still available. What is the problem?

The command contained a syntax error.

The Cisco IOS version does not support disabling the command history buffer.

The command history can only be disabled on a router, not a switch.

The size parameter reset the default buffer size but did not disable access to the buffer.






2.3.3 Accessing the Command History

2

Refer to the exhibit. A network administrator configures HyperTerminal with the parameters shown but is unable to

connect to a switch via the console port. The administrator is using a tested rollover cable attached to the only COM

port on the computer, and the connections have been verified. What is the likely problem?

The cable is connected to the wrong port.

The wrong connection speed is selected.

The cable is the wrong type.

The flow control setting is not correct.

The stop bits should be set to zero.






2.3.5 Prepare to Configure the Switch

3

Refer to the exhibit. What would happen if the network administrator moved the network cable of Host A from interface

Fa0/1 to Fa0/3 on switch SW1?

Host A remains a member of VLAN 10, because the router is routing traffic between VLANs.

Host A is no longer a member of VLAN 10, because port Fa0/3 has been manually assigned to VLAN 30.

Host A remains a member of VLAN 10, because the switch provides dynamic VLAN assignment for the port.

Host A maintains connectivity to all members of VLAN 10, because it is connected to the same physical network.

Host A is no longer a member of VLAN 10, but because port Fa0/3 was unused, it is now a member of VLAN 1.






3.5.3 Troubleshooting VLAN Configurations

4 What is the purpose of issuing the command switchport mode access on a switch interface?

disable port security

make the port operational

override the default port behavior

force the port to be a part of a single vlan







5

Refer to the exhibit. Which Spanning Tree Protocol version is in effect?

Per VLAN Spanning Tree (PVST)

Per VLAN Spanning Tree + (PVST+)

Common Spanning Tree (CST)

Rapid Spanning Tree Protocol (RSTP)

Multiple Spanning Tree Protocol (MSTP)






5.4.3 RSTP

6

Refer to the exhibit. The devices in the network are operational and configured as indicated in the exhibit. However,

hosts B and D cannot ping each other. What is the most likely cause of this problem?

The link between the switches is up but not trunked.

The Fa0/11 interface of Switch1 is not configured as a trunk.

Hosts B and D are configured with IP addresses from different subnets.

VLAN 20 and VLAN 30 are not allowed on the trunk between the switches.







7

Refer to the exhibit. Switch SW2 was tested in a lab environment and then inserted into a production network without

reloading its configuration. After the trunk link between SW1 and SW2 was brought up, all users lost connectivity to the

network. What could be the source of the problem?

All the VLANs were pruned from the trunk port between SW1 and SW2.

SW1 and SW2 cannot be both set as VTP servers in the same VTP domain.

VTP configuration revision number of SW2 was higher than the configuration revision number of SW1.

The additional VLANs from SW2 created more VLANs than the VLAN database of SW1 could contain.







8 In which mode is a VTP switch operating if it has been configured to only forward VTP advertisements?

client

root

server

transparent






4.2.4 VTP Modes

9 Which method establishes an administrative connection for configuring the Linksys WRT300N wireless access point?

Associate with the access point and then open a HyperTerminal session with the access point.

Physically connect to the access point and then reboot the computer to launch the configuration software.

From a computer in the same IP subnet as the access point, enter the default IP address of the access point in a web

browser.

Modify the TCP/IP properties of the computer connected to the access point so that it exists on the same network, and

then reboot your computer to establish a connection.







10

Refer to the exhibit. Each switch is shown with its MAC address. Which switch will be elected as the spanning-tree root

bridge if the switches are configured with their default priority values?

switch A

switch B

switch C

switch D

switch E

switch F






5.2.3 Bridge ID

11 What are two benefits of the IEEE 802.11n standard over the IEEE 802.11G? (Choose two.)

requires less equipment

provides improved range

permits increased data rates

has a single-input and a single-output

needs no hardware upgrade for compatibility







7.1.2 Wireless LAN Standards

12 Which parameter is used to uniquely identify one wireless network from another?

SSID

OFDM

WEP

DSSS







13

Refer to the exhibit. What will be the result of the commands that are shown in the exhibit?

Only clients on VLAN 2 will be able to use DHCP for addressing.

DHCP server responses will only be permitted on interface Fa0/2.

Only 100 clients are permitted to request DHCP addresses on VLAN 2.

Client requests for DHCP addresses will be filtered out if the requests are not received on interface Fa0/2.







14 What is an efficient and cost effective way to minimize the frequency and effects of broadcast storms on an Ethernet

LAN?

Connect each PC directly to a router port.

Use access control lists to filter broadcasts from the network.

Divide the computers into separate VLANs on the existing switches.

Divide the computers into separate workgroups using different physical switches.







15

Refer to the exhibit. After entering the commands in the exhibit, the administrator receives a "password required, but

none set" message when attempting to connect to S1. What is the problem?

The enable secret password was not set.

S1 does not have login configured on the vty lines.

S1 does not have a password configured for the vty lines.

The crypto key is not properly configured to generate passwords.

The VLAN1 interface has not be enabled with the no shutdown command.







16

Refer to the exhibit. Computer D sends a broadcast message. Which devices will process the broadcast message?

computer E

computer D and computer E

computer D, computer E, and Router1

computer B and computer E

computer B, computer E, and Router1

computer C, computer D, and computer E

computer C, computer D, computer E, and Router1

computer A, computer B, computer C, computer D, computer E, and Router1







17

Refer to the exhibit. Hosts that are connected to switch SW1 are not able to communicate with hosts in the same VLAN

that are connected to switch SW2. What should be done to fix the problem?

Introduce a Layer 3 device in the topology.

Configure both switches in VTP transparent mode to allow them to share VLAN information.

Reconfigure the fa0/1 interface on switch SW1 with a static trunk configuration.

Apply IP addresses that are in the same subnet to FastEthernet 0/1 on SW1 and FastEthernet 0/2 on SW2.







18

Refer to the exhibit. A network administrator needs to add IP phones to the network. To which devices should the IP

phones connect?

AS1 and AS2

DS1 and DS2

DS1, DS2, and CS1

AS1, AS2, DS1, and DS2






1.1.1 The Hierarchical Network Model

19 What are two benefits of a hierarchical network model over a flat network design? (Choose two.)

reduced cost of equipment

increased network availability

elimination of equipment downtime

reduced size of the physical network layout

simplification of management and troubleshooting

elimination of the need for Layer 3 functionality








20

Refer to the exhibit. What is true of the configuration of switch S1?

Only VLAN 99 will be allowed to use the trunk links.

Switch ports Fa0/1 and Fa0/3 are configured with a standard trunking protocol.

Switch ports Fa0/1 and Fa0/3 should be configured as access ports to allow data from multiple VLANs to access switch

S1.

The switch negotiated trunk links for interfaces Fa0/1 and Fa0/3 because all connected interfaces have been configured

with the switchport mode dynamic auto command.







21

Refer to the exhibit. What does the term DYNAMIC indicate in the output that is shown?

This entry can only be removed from the MAC address table by a network administrator.

When forwarding a frame to the device with address 0060.5c5b.cd23, the switch does not have to perform a lookup to

determine the final destination port.

Only the device with MAC address 0060.5c5b.cd23 will be allowed to connect to port Fa0/18.

The switch learned this MAC address from the source address in a frame received on Fa0/18.







22

Refer to the exhibit. SW-T has been configured with a single trunking interface. Which VLANs will be allowed across the

trunk?


All configured VLANs will be allowed across the trunk.


Only the the management and native VLANs will be allowed across the trunk.

Only VLANs that are configured on the VTP server in the domain will be allowed across the trunk.






3.2.1 VLAN Trunks

23

Refer to the exhibit. Router RA receives a packet with a source address of 192.168.1.65 and a destination address of

192.168.1.161. What will the router do with this packet?

The router will drop the packet.

The router will forward the packet out interface FastEthernet 0/1.1.



The router will forward the packet out interface FastEthernet 0/1.2 and interface FastEthernet 0/1.3.







24


host?

192.168.1.22 /28

192.168.1.31 /28

192.168.1.32 /28

192.168.1.52 /28

192.168.1.63 /28







25

Refer to the exhibit. VTP pruning is enabled in the VTP domain that is shown. How will switch ST-1 handle Layer 2

broadcast traffic originating from host A on switch ST-C?

It will be dropped.

It will be forwarded out port Fa0/5 only.

It will be forwarded out ports Fa0/5 and Fa0/10.

It will be forwarded out ports Fa0/5, Fa0/10, and Fa0/15.






4.2.5 VTP Pruning

26 What is the purpose of the Spanning Tree algorithm?

It propagates VLAN configurations to other switches.

It restricts broadcast packets to a single VLAN.

It segments a network into multiple broadcast domains.

It prevents loops in a switched network with redundant paths.







27

Refer to the exhibit. Switches S2 and S3 are properly connected using an ethernet cable. A network administrator has

configured both switches with VTP, but S3 is unable to propagate VLANs to S2. What could be the reason for this?

The VTP configuration revision is different on both switches.

The VTP domains are different on both switches.

VTP pruning is disabled.

VTP v2 is disabled.






4.1.1 What is VTP?

28 When configuring a router to act as an SSH server, what should be configured before issuing the crypto key generate

rsa command?

the security domain name

the VTP domain name

the IP domain name

the host name







29

Refer to the exhibit. A network administrator has segmented the network into two VLANs. The connected hosts can only

access resources in their own VLAN. What is the most scalable and cost effective solution to allow inter-VLAN

communication in this network?

Replace S1 with a router that has one FastEthernet interface for each PC.

Add a second switch and divide the PCs so that each VLAN is connected to its own switch.

Configure a router with two subinterfaces on one of its FastEthernet ports and connect it to S1 using a trunk link.

Connect a router to a port on S1 and assign the IP address of VLAN1 to the connecting router interface.








It is configured in VTP server mode.

STP is automatically enabled.

The first VTY line is automatically configured to allow remote connections.



The enable password is configured as cisco.








31 What is the purpose of VLAN trunking?

It improves network performance by reducing broadcast traffic.

It selects the best path to transmit data in a switched network.

It carries the traffic of multiple VLANs through a single link.

It avoids spanning tree loops in a switched network.






3.2.1 VLAN Trunks

32

Refer to the exhibit. Switch SW2 has been newly purchased and added to the network. What configuration should be

applied to SW2 so that it participates in the same VTP domain as switch SW1, receives VLAN information from SW1, and

synchronizes VLAN information?

Disable VTP pruning on SW2.

Configure SW2 in VTP transparent mode.

Configure SW2 with the VTP domain password.

Configure SW2 as a VTP server with a higher revision number.







33

Refer to the exhibit. Users A and B are reporting intermittent connectivity problems. Pre-installation surveys showed

strong signal strength from the AP locations to the client locations. Outside electrical interference has been eliminated.

What will fix the problem?

Relocate the APs closer to each other.

Increase the distance between the clients.

Change the channel on AP-B to 6 or 11.

Place AP-A and AP-B on the same wireless channel.






7.4.2 Incorrect Channel Settings

34

Refer to the exhibit. What is the maximum number of VLANs that can be deleted from the Switch as it is configured?

zero

four

five

eight

nine







35 Why is MAC address filtering considered a poor choice in securing a WLAN?

Available bandwidth is reduced.

MAC addresses are easily spoofed.

APs are more susceptible to DoS attacks.

The payload encryption is easily broken.






7.2.3 Securing a Wireless LAN

36 What can an administrator do to ensure that a specific switch will win a root election if all switches are set to their

default configurations?

Set the bridge priority to 16384.

Change the VTP mode to server.

Assign a port priority of 128 for all ports on the switch.

Configure a loopback interface with the highest IP address.






5.2.3 Bridge ID

37 RSTP is enabled in a switched network that is active and converged. Which switch port type assumes a discarding

state on non-root switches?

root port

edge port

alternate port

designated port







38 What is a result of improperly implementing a network with redundancy at Layer 2?

an increase of unicast and multicast errors at Layer 3

a decrease in the amount of broadcast traffic

end device malfunction because of broadcast storms

an increase in throughput at all points in the network






5.1.2 Issues with Redundancy

39 What information in an Ethernet frame is used by a Layer 2 switch to build its address table?

source IP address

source MAC address

destination IP address

destination MAC address







40 Which switch forwarding method should be used on a network that employs frame classification based on an assigned

Quality of Service (QoS) value?

cut-through

fast-forward

fragment-free

store-and-forward







41 Which two conditions would require a VTP client to send a request advertisement to a VTP server? (Choose two.)

The switch has been reset.

A VLAN has been created or deleted.

A five minute time period has elapsed.

The name of a VLAN has been changed.

The VTP domain name has been changed.








42

Refer to the exhibit. A network administrator is configuring RT1 for inter-VLAN routing. The switch is configured

correctly and is functional. Host1, Host2, and Host3 cannot communicate with each other. Based on the router

configuration, what is causing the problem?

Interface Fa0/0 is missing IP address configuration information.

IP addresses on the subinterfaces are incorrectly matched to the VLANs.

Each subinterface of Fa0/0 needs separate no shutdown commands.

Routers do not support 892.1Q encapsulation on subinterfaces.







43

Refer to the exhibit. PC1 and PC2 are plugged into port Fa0/10 and Fa0/11 respectively. How will this affect the port

states of these switch ports?

The ports will transition from blocking to learning immediately.

The ports will transition from blocking to listening and learning states.

The ports will transition from blocking to forwarding state immediately.

The ports will transition from blocking to listening, learning, and forwarding states.







44

Refer to the exhibit. To ensure optimum network performance, it is desirable that every user PC should be able to reach

the file server by passing through no more than 2 switches. Which command in which context satisfies this performance

requirement?

spanning-tree vlan 10 root primary on SW1


spanning-tree vlan 10 priority 32768 on SW1

spanning-tree vlan 10 root secondary on SW2






5.3.2 Step 1. Electing A Root Bridge

45 Which IEEE trunking protocol is used to encapsulate data traffic over a trunk link on a Cisco switch?

STP

DTP

VTP

802.1Q






3.2.1 VLAN Trunks

46

Refer to the exhibit. The network administrator needs to remove the east-hosts VLAN and use the switch port from that

VLAN in one of the existing VLANs. Which two sets of commands should be used when completely removing VLAN 2

from S1-Central while leaving the switch and all its interfaces operational? (Choose two.)

S1-Central# reload

S1-Central# erase flash:

S1-Central# delete flash:vlan.dat

S1-Central# configure terminal

S1-Central(config)# no vlan 2


S1-Central(config)# interface fastethernet 0/1

S1-Central(config-if)# switchport access vlan 3







3.3.3 Managing VLANs

47

Refer to the exhibit. What is the effect of setting the security mode to WEP on the Linksys integrated router?

WEP identifies the wireless LAN.

WEP allows the access point to inform clients of its presence.

WEP translates IP addresses into easy-to-remember domain names.

WEP encrypts data between the wireless client and the access point.

WEP translates an internal address or group of addresses into an outside, public address.







48

Refer to the exhibit. Host A and host B are not able to send traffic to each other. On the basis of the output that is

provided, what is the cause of the problem?

mismatched speed settings

mismatched duplex settings

media type incompatibility

incorrect port encapsulation







49 Which three actions are performed during the boot sequence of a Cisco switch? (Choose three.)

The boot loader uses the self-contained switch operating system to boot the switch.

The boot loader retrieves diagnostics routines via TFTP.

The boot loader performs POST.

The boot loader is loaded from RAM.

The boot loader initializes the flash file system that is used to boot the system.

The boot loader loads the default operating system if the flash-based operating system is corrupt or missing.







2.3.4 The Switch Boot Sequence

50 What advantage does cut-through switching provide?

It enables QoS

It forwards frames quickly.

It provides an analysis of frames.

It allows reduction of traffic by using error checking to drop corrupt frames.







ESwitching Final Exam - FINAL - C

1














2 A network administrator is implementing VTP in a large campus LAN that contains one hundred switches. What are

valid considerations for reliability and administration?

Using server mode on a single master switch and client mode on all other switches will provide the most fault tolerance

for retaining VLAN information in all switches if power is lost on the network.

Using transparent mode on all switches will allow for efficient administration and prevent VLAN data loss from the loss

of any single switch.

Configuring several switches in server mode will allow all VLANs to be entered from a single switch and preserve VLAN

data if any of the switches or connections are lost.

Configuring one primary and one backup switch in server mode and all other switches in transparent mode will provide

fault tolerance for the VLAN data and allow for efficient distribution of the VLAN configurations to all switches.







3












5.4.3 RSTP

4

Refer to the exhibit. The network administrator has just added VLAN 50 to Switch1 and Switch2. Hosts A, B, C, and D

are correctly configured with IP addresses in the subnet range for VLAN 50. Host A can communicate with host B, but

cannot communicate with host C or host D. What is the cause of this problem?

There is a native VLAN mismatch.


The link between Switch1 and Switch2 is up but not trunked.

VLAN 50 is not allowed on the trunk link between Switch1 and Switch2.






4.2.5 VTP Pruning

5

Refer to the exhibit. Both switches are interconnected via a trunk link. Host A and host B are on the default VLAN but

are not able to exchange traffic. What should be done to fix the problem?

Allow all VLANs on the trunk link.

Remove the native VLAN from the trunk.

Include a router or switch with Layer 3 capabilities.

Configure the same native VLAN on both ends of the trunk.







6

Refer to the exhibit. A network administrator has segmented the network into two VLANs and configured Router1 for

inter-VLAN routing. A test of the network, however, shows that hosts on each VLAN can only access local resources and

not resources on the other VLAN. What is the most likely cause of this problem?

Switch port Fa0/1 is not trunking.

Router interface Fa0/0 is possibly down.

No routing protocol is configured on Router1.

One of the router subinterfaces is possibly down.







7

Refer to the exhibit. R1 is configured for traditional inter-VLAN routing. R1 can ping computer 3 but cannot ping

computer 1. What is a possible cause for this failure?

S1 port Fa0/11 is in the wrong VLAN.

R1 does not have an active routing protocol.

The IP address of computer 1 is in the wrong logical network.

Router interface Fa0/0 has the wrong trunk encapsulation type configured.







8

Refer to the exhibit. Hosts A and B, connected to hub HB1, attempt to transmit a frame at the same time but a collision

occurs. Which hosts will receive the collision jamming signal?

only hosts A and B

only hosts A, B, and C

only hosts A, B, C, and D

only hosts A, B, C, and E






2.1.2 Design Considerations for Ethernet/802.3 Networks

9

Refer to the exhibit. What will allow a host on VLAN 40 on switch X to communicate with a host in VLAN 40 on switch

Y?

QoS

routing

trunking

VPN






3.2.1 VLAN Trunks

10















client

root

server

transparent






4.2.4 VTP Modes

12

Refer to the exhibit. Which switch will be elected as the root bridge of the spanning tree topology?

Cat-A

Cat-B

Cat-C

Cat-D







13 Which three statements are true regarding router-on-a-stick inter-VLAN routing? (Choose three.)

requires the use of subinterfaces on the router

requires an access link between the router and Layer 2 switch

more cost-efficient and scalable than using multiple physical interfaces

requires each subinterface to be configured with the no shutdown command

can impact performance if many VLANs compete for bandwidth on a single router interface

makes troubleshooting the inter-VLAN routing configuration much less complex than when using multiple physical

interfaces






















SSID

OFDM

WEP

DSSS







16

Refer to the exhibit. All hosts are in listen mode. Host 1 and Host 4 both transmit data at the same time. How do the

hosts respond on the network? (Choose two.)

After the end of the jam signal, a backoff algorithm is invoked.

Hosts 1 and 4 are operating full duplex so no collision will exist.

The hub will block the port connected to Host 4 to prevent a collision.

Hosts 1 and 4 are assigned shorter backoff values to provide them priority to access the media.

If a host has data to transmit after the backoff period of that host, the host checks to determine if the line is idle before

transmitting.








17

Refer to the exhibit. The Layer 2 switching design that is shown has been implemented in a campus environment that is

using Spanning Tree Protocol. All inter-switch links that are shown are trunks. Whenever an inter-switch link fails, the

network takes nearly a minute to completely converge. How can the convergence time be reduced?

Increase the capacity of the distribution and core trunk links to 10 Gb/s.

Add a trunk link that directly connects D1 and D2.

Use Layer 3 switching on the core switch.

Implement Rapid Spanning Tree Protocol.






5.4.3 RSTP

18 What happens when the crypto key zeroize rsa command is entered on a switch configured with the transport input

ssh command on the vty lines?

A new RSA key pair is created.

The switch defaults to allowing Telnet connections only.

The switch is no longer able to make SSH connections as an SSH client.

The switch allows remote connections only after a new RSA key pair is generated.







19














20

Refer to the exhibit. What happens when a frame from a source MAC address different from 00a8.d2e4.ba27 reaches

switch port 0/5?

The frame is dropped.

The port is shut down.

An error message is displayed.

FastEthernet port 0/5 will show an err-disabled message.







21 What VLANs are allowed across a trunk when the range of allowed VLANs is set to the default value?

only the management VLAN

all VLANs except the extended range VLANs

all VLANs except 1 and 1002-1005

all VLANs






4.2.5 VTP Pruning

22

Refer to the exhibit. What does STATIC indicate in the output that is shown?

Switch port Fa0/24 can only work in VLAN 99.

VLAN 99 was manually added to the VLAN database.

MAC address 0001.637b.b267 was learned from the source address of a frame that was received on switch port Fa0/24.

MAC address 0001.637b.b267 was manually associated with the switch port Fa0/24.







23 What are three benefits of employing a hierarchical network design? (Choose three.)

Hierarchically designed networks can more easily be expanded to suit future needs.

Hierarchical design models enhance existing bandwidth through the use of link aggregation.

The hierarchical model allows for specialized functionality at each layer, simplifying device management.

Use of a hierarchical design allows replacement of redundant devices with high-capacity network equipment.

A hierarchical design uses firewalls instead of complicated port-based and distribution layer security policies.

The hierarchical model allows the use of high-performance switches at all design layers, thus allowing for a fully-meshed

topology.








24 What provides an authentication mechanism for 802.11-based wireless networks?

DSSS

OFDM

SSID

WPA







25



It will be dropped.









4.2.5 VTP Pruning












27


host?

192.168.1.11 /28

192.168.1.22 /28

192.168.1.33 /28

192.168.1.44 /28

192.168.1.55 /28







28

Refer to the exhibit. How will switch S2 manage traffic coming from host PC1?

S2 will drop the traffic, unless it is management traffic.

S2 will tag the frame with VLAN ID 99 when it forwards it over the trunk link.

S2 will leave the traffic untagged when it forwards it over a trunk link.

S2 will tag the traffic with the highest VLAN ID value when it forwards it over the trunk link.






3.2.1 VLAN Trunks

29














30














31

Refer to the exhibit. A network administrator needs to download a previously saved configuration file from the TFTP

server to Switch1. Which command will accomplish this task?

Switch1# copy tftp://192.168.0.253/backup-confg nvram:startup-config

Switch1# copy tftp://192.168.0.254/backup-confg nvram:startup-config

Switch1# copy nvram:startup-config tftp://192.168.0.253/backup-config

Switch1# copy nvram:startup-config tftp://192.168.0.254/backup-config







32

Refer to the exhibit. Each switch is configured to participate in STP for VLANs 1, 10, 20, and 30. Which switch will

become the root for VLAN 20?

A

B

C

D






5.4.2 PVST+

33

Refer to the exhibit. The commands are entered into switch SW1 as shown, and an 802.1q trunk is successfully

established. How does switch SW1 handle the untagged traffic that is destined for the trunk?

SW1 will drop all untagged traffic.

SW1 will send all untagged traffic to VLAN 1.

SW1 will send all untagged traffic to VLAN 25.

SW1 will send untagged traffic to all VLANs that are configured on the trunk.






3.2.1 VLAN Trunks


34

Refer to the exhibit. If switch SW1 is configured with the four VLANs as shown in the exhibit, how many physical

interfaces are needed on router R1 to configure inter-VLAN routing using subinterfaces?

zero

one

two

four






6.1.1 Introducing Inter-VLAN Routing

35 Which two devices can cause interference with the operation of a WLAN because they operate on similar

frequencies? (Choose two.)

copier

AM radio

television

MP3 player

cordless phone

microwave oven







7.4.3 Solve Access Point Radio and Firmware Issues

36 Which STP port type can only appear once on a segment, and must be present in order for traffic to flow on that

segment?

non-root port

disabled port

designated port

non-designated port






5.3.4 Step 3. Electing Designated Ports and Non-Designated Ports

37 What is a possible impact of setting too short an aging time in the MAC address table of a switch?

overly large address table

unnecessary flooding of packets

excessive timeouts of static addresses

impaired ability to dynamically learn new addresses


















39 Which type of traffic can still be received on a switch interface that is in STP blocking mode?

BPDU frames

multicast frames

broadcast frames

Layer 3 packets







40 In a three-layer hierarchical network design, which distribution layer function delineates broadcast domains?

routing between VLANs

aggregating traffic flows

providing redundant links

reducing the network diameter







41 Which switching method provides error-free data transmission?

fragment-free

fast-forward

integrity-checking

store-and-forward









cut-through

fast-forward

fragment-free

store-and-forward







43

Refer to the exhibit. A network administrator issues the command shown on Switch1. What are two possible reasons

that ports Fa0/1 through Fa0/4, and ports Fa0/11 and Fa0/12 do not show in the command output? (Choose two.)

The ports have been configured as trunks.

The ports have been assigned to the native VLAN.

The VLAN that they are assigned to has been deleted.

The ports currently do not have any devices plugged into them.

The no shutdown command was not issued on these ports.







3.2.1 VLAN Trunks


44 Which statement describes the use of voice VLANs in Cisco IP telephony?

The voice VLAN carries both tagged and untagged traffic.

The voice VLAN carries untagged traffic having special QoS markings.

The voice VLAN must be configured on the switch port to which the IP phone attaches.

Data and voice frames are tagged with same VLAN ID between the IP phone and the switch when a voice VLAN is

configured.







45

Refer to the exhibit. The broadcast traffic from PC1 is consuming bandwidth on the interswitch trunks. What should be

done to prevent this from happening?

Move PC1 to a port on SW3.



Enable pruning for VLAN10 on the VTP server.

Associate PC1 as a member of a new VLAN.






4.2.5 VTP Pruning

46

Refer to the exhibit. A junior network administrator was tasked to configure all VTY lines on the switch for remote

access. However, when the senior network administrator attempted to access the switch remotely, a "% Error in

authentication" console message was received. What could be the cause of the problem?

The VTY line password is entered incorrectly.

The console password is missing from the switch configuration.

The service password-encryption command is missing from the switch configuration.

The enable password or enable secret password is missing from the switch configuration.







47 A network administrator issued the erase nvram: command on a switch. What will be the outcome of the command?

It will clear the contents of the MAC table.

It will clear the contents of the VLAN database.

It will clear the contents of the startup configuration file.

It will clear the contents of the running configuration file.







48 Which statement accurately describes a switch with all access ports assigned to the same VLAN?

All users are in the same broadcast domain.

A router is required for communication between the users.

Bandwidth is utilized more efficiently, resulting in a reduction in costs.

Performance is increased by keeping all users in the same Layer 2 network.







49 A network administrator enters the enable command at the Switch> prompt of a new switch. What mode will the

switch enter?

setup mode

configuration mode

privileged EXEC mode

user EXEC mode

ROMMON mode

interface mode






2.3.1 Navigating Command-Line Interface Modes

50 Which statement is true about open authentication when it is enabled on an access point?

requires no authentication

uses a 64-bit encryption algorithm

requires the use of an authentication server

requires a mutually agreed upon password






7.2.2 Wireless Security Protocols

ESwitching Final Exam - FINAL - B

1 Company policy requires disabling the command history buffer on network devices. An administrator enters terminal

no history size at the command prompt on a Cisco Catalyst switch and receives no error messages back, but the

command history buffer is still available. What is the problem?

The command contained a syntax error.

The Cisco IOS version does not support disabling the command history buffer.

The command history can only be disabled on a router, not a switch.

The size parameter reset the default buffer size but did not disable access to the buffer.






2.3.3 Accessing the Command History

2

Refer to the exhibit. A network administrator configures HyperTerminal with the parameters shown but is unable to

connect to a switch via the console port. The administrator is using a tested rollover cable attached to the only COM

port on the computer, and the connections have been verified. What is the likely problem?

The cable is connected to the wrong port.

The wrong connection speed is selected.

The cable is the wrong type.

The flow control setting is not correct.

The stop bits should be set to zero.






2.3.5 Prepare to Configure the Switch

3














4 What is the purpose of issuing the command switchport mode access on a switch interface?

disable port security

make the port operational

override the default port behavior

force the port to be a part of a single vlan







5












5.4.3 RSTP

6

Refer to the exhibit. The devices in the network are operational and configured as indicated in the exhibit. However,

hosts B and D cannot ping each other. What is the most likely cause of this problem?

The link between the switches is up but not trunked.


Hosts B and D are configured with IP addresses from different subnets.

VLAN 20 and VLAN 30 are not allowed on the trunk between the switches.







7















client

root

server

transparent






4.2.4 VTP Modes

9 Which method establishes an administrative connection for configuring the Linksys WRT300N wireless access point?

Associate with the access point and then open a HyperTerminal session with the access point.

Physically connect to the access point and then reboot the computer to launch the configuration software.

From a computer in the same IP subnet as the access point, enter the default IP address of the access point in a web

browser.

Modify the TCP/IP properties of the computer connected to the access point so that it exists on the same network, and

then reboot your computer to establish a connection.







10

Refer to the exhibit. Each switch is shown with its MAC address. Which switch will be elected as the spanning-tree root

bridge if the switches are configured with their default priority values?

switch A

switch B

switch C

switch D

switch E

switch F






5.2.3 Bridge ID















SSID

OFDM

WEP

DSSS







13

Refer to the exhibit. What will be the result of the commands that are shown in the exhibit?

Only clients on VLAN 2 will be able to use DHCP for addressing.

DHCP server responses will only be permitted on interface Fa0/2.

Only 100 clients are permitted to request DHCP addresses on VLAN 2.

Client requests for DHCP addresses will be filtered out if the requests are not received on interface Fa0/2.







14 What is an efficient and cost effective way to minimize the frequency and effects of broadcast storms on an Ethernet

LAN?

Connect each PC directly to a router port.

Use access control lists to filter broadcasts from the network.

Divide the computers into separate VLANs on the existing switches.

Divide the computers into separate workgroups using different physical switches.







15














16

Refer to the exhibit. Computer D sends a broadcast message. Which devices will process the broadcast message?

computer E

computer D and computer E

computer D, computer E, and Router1

computer B and computer E

computer B, computer E, and Router1

computer C, computer D, and computer E

computer C, computer D, computer E, and Router1

computer A, computer B, computer C, computer D, computer E, and Router1







17

Refer to the exhibit. Hosts that are connected to switch SW1 are not able to communicate with hosts in the same VLAN

that are connected to switch SW2. What should be done to fix the problem?

Introduce a Layer 3 device in the topology.

Configure both switches in VTP transparent mode to allow them to share VLAN information.

Reconfigure the fa0/1 interface on switch SW1 with a static trunk configuration.

Apply IP addresses that are in the same subnet to FastEthernet 0/1 on SW1 and FastEthernet 0/2 on SW2.







18

Refer to the exhibit. A network administrator needs to add IP phones to the network. To which devices should the IP

phones connect?

AS1 and AS2

DS1 and DS2

DS1, DS2, and CS1

AS1, AS2, DS1, and DS2







19 What are two benefits of a hierarchical network model over a flat network design? (Choose two.)

reduced cost of equipment

increased network availability

elimination of equipment downtime

reduced size of the physical network layout

simplification of management and troubleshooting

elimination of the need for Layer 3 functionality








20

Refer to the exhibit. What is true of the configuration of switch S1?

Only VLAN 99 will be allowed to use the trunk links.

Switch ports Fa0/1 and Fa0/3 are configured with a standard trunking protocol.

Switch ports Fa0/1 and Fa0/3 should be configured as access ports to allow data from multiple VLANs to access switch

S1.

The switch negotiated trunk links for interfaces Fa0/1 and Fa0/3 because all connected interfaces have been configured

with the switchport mode dynamic auto command.







21

Refer to the exhibit. What does the term DYNAMIC indicate in the output that is shown?

This entry can only be removed from the MAC address table by a network administrator.

When forwarding a frame to the device with address 0060.5c5b.cd23, the switch does not have to perform a lookup to

determine the final destination port.

Only the device with MAC address 0060.5c5b.cd23 will be allowed to connect to port Fa0/18.

The switch learned this MAC address from the source address in a frame received on Fa0/18.







22

Refer to the exhibit. SW-T has been configured with a single trunking interface. Which VLANs will be allowed across the

trunk?


All configured VLANs will be allowed across the trunk.


Only the the management and native VLANs will be allowed across the trunk.

Only VLANs that are configured on the VTP server in the domain will be allowed across the trunk.






3.2.1 VLAN Trunks

23














24


host?

192.168.1.22 /28

192.168.1.31 /28

192.168.1.32 /28

192.168.1.52 /28

192.168.1.63 /28







25



It will be dropped.









4.2.5 VTP Pruning












27

Refer to the exhibit. Switches S2 and S3 are properly connected using an ethernet cable. A network administrator has

configured both switches with VTP, but S3 is unable to propagate VLANs to S2. What could be the reason for this?

The VTP configuration revision is different on both switches.

The VTP domains are different on both switches.

VTP pruning is disabled.

VTP v2 is disabled.






4.1.1 What is VTP?

28 When configuring a router to act as an SSH server, what should be configured before issuing the crypto key generate

rsa command?

the security domain name

the VTP domain name

the IP domain name

the host name







29

Refer to the exhibit. A network administrator has segmented the network into two VLANs. The connected hosts can only

access resources in their own VLAN. What is the most scalable and cost effective solution to allow inter-VLAN

communication in this network?

Replace S1 with a router that has one FastEthernet interface for each PC.

Add a second switch and divide the PCs so that each VLAN is connected to its own switch.

Configure a router with two subinterfaces on one of its FastEthernet ports and connect it to S1 using a trunk link.

Connect a router to a port on S1 and assign the IP address of VLAN1 to the connecting router interface.








It is configured in VTP server mode.

STP is automatically enabled.

The first VTY line is automatically configured to allow remote connections.



The enable password is configured as cisco.








31 What is the purpose of VLAN trunking?

It improves network performance by reducing broadcast traffic.

It selects the best path to transmit data in a switched network.

It carries the traffic of multiple VLANs through a single link.

It avoids spanning tree loops in a switched network.






3.2.1 VLAN Trunks

32

Refer to the exhibit. Switch SW2 has been newly purchased and added to the network. What configuration should be

applied to SW2 so that it participates in the same VTP domain as switch SW1, receives VLAN information from SW1, and

synchronizes VLAN information?

Disable VTP pruning on SW2.

Configure SW2 in VTP transparent mode.

Configure SW2 with the VTP domain password.

Configure SW2 as a VTP server with a higher revision number.







33














34

Refer to the exhibit. What is the maximum number of VLANs that can be deleted from the Switch as it is configured?

zero

four

five

eight

nine







35 Why is MAC address filtering considered a poor choice in securing a WLAN?

Available bandwidth is reduced.

MAC addresses are easily spoofed.

APs are more susceptible to DoS attacks.

The payload encryption is easily broken.






7.2.3 Securing a Wireless LAN

36 What can an administrator do to ensure that a specific switch will win a root election if all switches are set to their

default configurations?

Set the bridge priority to 16384.

Change the VTP mode to server.

Assign a port priority of 128 for all ports on the switch.

Configure a loopback interface with the highest IP address.






5.2.3 Bridge ID

37 RSTP is enabled in a switched network that is active and converged. Which switch port type assumes a discarding

state on non-root switches?

root port

edge port

alternate port

designated port


















39 What information in an Ethernet frame is used by a Layer 2 switch to build its address table?

source IP address

source MAC address

destination IP address

destination MAC address









cut-through

fast-forward

fragment-free

store-and-forward







41 Which two conditions would require a VTP client to send a request advertisement to a VTP server? (Choose two.)

The switch has been reset.

A VLAN has been created or deleted.

A five minute time period has elapsed.

The name of a VLAN has been changed.

The VTP domain name has been changed.








42

Refer to the exhibit. A network administrator is configuring RT1 for inter-VLAN routing. The switch is configured

correctly and is functional. Host1, Host2, and Host3 cannot communicate with each other. Based on the router

configuration, what is causing the problem?

Interface Fa0/0 is missing IP address configuration information.

IP addresses on the subinterfaces are incorrectly matched to the VLANs.

Each subinterface of Fa0/0 needs separate no shutdown commands.

Routers do not support 892.1Q encapsulation on subinterfaces.







43

Refer to the exhibit. PC1 and PC2 are plugged into port Fa0/10 and Fa0/11 respectively. How will this affect the port

states of these switch ports?

The ports will transition from blocking to learning immediately.

The ports will transition from blocking to listening and learning states.

The ports will transition from blocking to forwarding state immediately.

The ports will transition from blocking to listening, learning, and forwarding states.







44

Refer to the exhibit. To ensure optimum network performance, it is desirable that every user PC should be able to reach

the file server by passing through no more than 2 switches. Which command in which context satisfies this performance

requirement?



spanning-tree vlan 10 priority 32768 on SW1

spanning-tree vlan 10 root secondary on SW2







45 Which IEEE trunking protocol is used to encapsulate data traffic over a trunk link on a Cisco switch?

STP

DTP

VTP

802.1Q






3.2.1 VLAN Trunks

46

Refer to the exhibit. The network administrator needs to remove the east-hosts VLAN and use the switch port from that

VLAN in one of the existing VLANs. Which two sets of commands should be used when completely removing VLAN 2

from S1-Central while leaving the switch and all its interfaces operational? (Choose two.)

S1-Central# reload

S1-Central# erase flash:

S1-Central# delete flash:vlan.dat


S1-Central(config)# no vlan 2


S1-Central(config)# interface fastethernet 0/1

S1-Central(config-if)# switchport access vlan 3








47

Refer to the exhibit. What is the effect of setting the security mode to WEP on the Linksys integrated router?

WEP identifies the wireless LAN.

WEP allows the access point to inform clients of its presence.

WEP translates IP addresses into easy-to-remember domain names.

WEP encrypts data between the wireless client and the access point.

WEP translates an internal address or group of addresses into an outside, public address.







48

Refer to the exhibit. Host A and host B are not able to send traffic to each other. On the basis of the output that is

provided, what is the cause of the problem?

mismatched speed settings

mismatched duplex settings

media type incompatibility

incorrect port encapsulation







49 Which three actions are performed during the boot sequence of a Cisco switch? (Choose three.)

The boot loader uses the self-contained switch operating system to boot the switch.

The boot loader retrieves diagnostics routines via TFTP.

The boot loader performs POST.

The boot loader is loaded from RAM.

The boot loader initializes the flash file system that is used to boot the system.

The boot loader loads the default operating system if the flash-based operating system is corrupt or missing.







2.3.4 The Switch Boot Sequence

50 What advantage does cut-through switching provide?

It enables QoS

It forwards frames quickly.

It provides an analysis of frames.

It allows reduction of traffic by using error checking to drop corrupt frames.







Certready.tkTest engine

1)CCNA(Cisco Certified Network Associate)The Cisco CCNA network associate certification validates the ability to install, configure, operate, and troubleshoot medium-size routed and switched networks, including implementation and verification of connections to remote sites in a WAN. This new curriculum includes basic mitigation of security threats, introduction to wireless networking concepts and terminology, and performance-based skills. This new curriculum also includes (but is not limited to) the use of these protocols: IP, Enhanced Interior Gateway Routing Protocol (EIGRP), Serial Line Interface Protocol Frame Relay, Routing Information Protocol Version 2 (RIPv2),VLANs, Ethernet, access control lists (ACLs)

ESwitching Practice Final Exam 005

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