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Page 1: ccna 1 exploration 4.0 examen final

Take Assessment - ENetwork Final Exam - CCNA Exploration: Aspectos básicos de networking (Version 4.0) Resultados del examen - ENetwork Final Exam - CCNA Exploration: Aspectos básicos de networking - Versión 4.01

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1 What is the Cisco IOS?

system software for Cisco devices

Read Only Memory in Cisco devices

non-volatile storage for device configurations

an initial operating system that is used for boot functions

2

Refer to the exhibit. A network administrator tries to test the connectivity between routers R1 and R2, but the attempt to ping is unsuccessful. Based on the show ip interface brief command outputs, what could be the possible cause of the problem?

Interface S0/0/0 on router R1 is shut down.

Interface S0/0/0 on router R1 is configured with an incorrect IP address.

Interface S0/0/0 on router R2 is administratively down.

Interface S0/0/0 on router R2 does not have the clock rate settings configured.

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3

Refer to the exhibit. RouterB is configured properly. The Ethernet interface Fa0/0 of RouterA is configured with the use of the commands that are shown. However, a ping from the Fa0/0 interface of RouterA to the Fa0/0 interface of RouterB is unsuccessful. What action should be taken on RouterA to solve this problem?

Use the description command on the FastEthernet interface Fa0/0.

Configure the clock rate of the FastEthernet interface Fa0/0.

Use the no shutdown command on the FastEthernet interface Fa0/0.

Reboot the router.

4 Which password is automatically encrypted when it is created?

vty

aux

console

enable secret

enable password

5 What are the default terminal emulation software settings when configuring a Cisco device through a console port?Bits per second: 19200Data bits: 7Parity: NoneStop bits: 0Flow control: NoneBits per second: 9600Data bits: 8Parity: NoneStop bits: 1Flow control: NoneBits per second: 19200Data bits: 7Parity: NoneStop bits: 0Flow control: HardwareBits per second: 9600Data bits: 8Parity: NoneStop bits: 1Flow control: Hardware

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6 Which two functions of the OSI model occur at layer two? (Choose two.)

physical addressing

encoding

routing

cabling

media access control

7

Refer to the exhibit. Which layered network model is shown in the diagram?

Cisco

IETF

OSI

TCP/IP

8

Refer to the exhibit. A user wants to access the Internet from the PC. A part of the running configuration of the router is shown. Which default gateway IP address should be configured at the PC to enable this access?

10.1.192.1

10.1.192.2

10.1.192.54

192.31.7.1

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Refer to the exhibit. Host C is able to ping 127.0.0.1 successfully, but is unable to communicate with hosts A and B in the organization. What is the likely cause of the problem?

Hosts A and B are not on the same subnet as host C.

The IP addresses on the router serial interfaces are wrong.

The subnet mask on host C is improperly configured.

The FastEthernet interface fa0/0 of router 1 is wrongly configured.

10

Refer to the exhibit. While configuring a network, a technician wired each end of a Category 5e cable as shown. Which two statements are true about this setup? (Choose two.)

The cable is suitable for connecting a switch to a router Ethernet port.

The cable is suitable for connecting dissimilar types of devices.

The cable is unusable and must be rewired.

The cable is terminated in a way that the transmit pin is wired to the receive pin.

The cable simulates a point-to-point WAN link.

11 A network administrator is designing an IP address scheme for a site. To comply with company policy, the address scheme must support up to 500 hosts and must be RFC 1918 compliant. Which IP address and prefix meets these requirements?

64.100.0.0/16

128.107.0.0/16

172.30.0.0/21

192.18.0.0/16

192.168.0.0/24

12 Which option shows how a router will route packets to a remote network?

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Take Assessment - ENetwork Final Exam - CCNA Exploration: Aspectos básicos de networking (Version 4.0)

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13 Which memory contents will change as a result of using the Router# erase startup-config command on a router?

RAM

ROM

flash

NVRAM

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14 What command can be used to troubleshoot domain name resolution issues?

get

arp -a

tracert

nslookup

15

Refer to the exhibit. The ping 127.0.0.1 command is issued on the local host. What do the ping results indicate?

The local host can send packets on the local network.

The TCP/IP stack on the local host operates properly.

The local host has full connectivity to the default gateway.

The local host has full connectivity to the remote network.

16

Refer to the exhibit. Host A is configured with the correct IP address for the default gateway of the router R1 FastEthernet0/1 interface. How will a packet that is sent from host A to host B be handled by the devices on the network?

R1 will drop the packet because R1 does not have a specific route in its routing table to the 10.1.1.0/24 network.

R1 will forward the packet to its default gateway, the next hop router R2. R2 will forward the packet to the directly connected network 10.1.1.0/24.R1 will forward the packet to its default gateway, the next hop router R2. R2 will drop the packet because it does not have a default route to network 10.1.1.0/24.R1 will forward the packet to its default gateway, the next hop router R2. R2 will drop the packet because it does not have a route that is learned by a routing protocol to network 10.1.1.0/24.

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Refer to the exhibit. An administrator made several changes to the configuration of the router but did not accomplish the desired result. To undo the changes the reload command was used. What will happen if the administrator answers yes to the prompt?

The changes will be lost and the configuration file in RAM will be loaded.

The changes will be saved and the configuration file in RAM will be loaded.

The changes will be lost and the configuration file in NVRAM will be loaded.

The changes will be saved and the configuration file in NVRAM will be loaded.

18 By using the ipconfig command, a network administrator determines that a workstation has the address 192.168.3.38 with 29 bits set in the subnet mask. To what network does the workstation belong?

192.168.3.8

192.168.3.16

192.168.3.24

192.168.3.32

19 A network administrator is asked to design a new addressing scheme for a corporate network. There are 60 users in the main office, 40 users in the branch office, 28 users in manufacturing, 12 in the sales office, and 4 users in the research office. Which VLSM addressing scheme that uses the 192.168.88.0/24 network will fulfill the requirements while wasting the fewest addresses?

192.168.88.0/26 main192.168.88.32/26 branch192.168.88.64/26 manufacturing192.168.88.96/27 sales192.168.88.128/28 research192.168.88.0/26 main192.168.88.64/26 branch192.168.88.128/27 manufacturing192.168.88.160/28 sales192.168.88.176/29 research192.168.88.0/27 main192.168.88.32/27 branch192.168.88.64/28 manufacturing192.168.88.80/29 sales192.168.88.88/30 research192.168.88.0/27 main192.168.88.64/28 branch192.168.88.80/28 manufacturing192.168.88.96/29 sales192.168.88.104/30 research

20 Which TCP/IP model layer creates additional overhead on network resources due to acknowledgments, tracking, and retransmission of data?

internet

transport

application

network access

21 Which application belongs to the category of the client/server model?

using Telnet to access a router

exchanging information via instant messaging

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printing a document to a locally connected printer

scanning a document with a directly connected scanner

22

Refer to the exhibit. A router, whose table is shown, receives a packet that is destined for 192.168.1.4. How will router treat the packet?

The packet will be dropped.

The packet will be forwarded via FastEthernet 0/0.

The packet will be forwarded to the destination host.

The packet will be forwarded to the 192.168.1.3 next-hop address.

23 Which option shows the PDU that contains the Layer 3 source and destination addressing for a packet?

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24 To enhance security in a network, the network administrator uses these commands:

Router(config)# line console 0 Router(config-line)# password j1mdi2Router(config-line)# login

What two conclusions are evident from these commands? (Choose two.)

Users who attempt to connect to the console port of the router must enter a password.

The entries permit access through the console by the use of j1mdi2 as the password.

The entries eliminate the need for authentication.

Access through the console will be denied because the console configuration is incomplete.

The entries prevent passwords from being displayed as plain text.

Take Assessment - ENetwork Final Exam - CCNA Exploration: Aspectos básicos de networking (Version 4.0)

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25 Which password would allow a user to establish a Telnet session with a Cisco device?

VTY password

enable password

console password

enable secret password

26 A network administrator needs to provide administrative access for certain users. Which mode will allow users access to both the and debug commands?

user executive mode

privileged executive mode

global configuration mode

router configuration mode

27

Refer to the exhibit. Host A is able to access resources on the local LAN but is unable to access any resources on the Internet. What is the likely cause of this problem?

The host subnet mask in incorrect.

The network uses private addresses.

The host address is a network address.

The default gateway is on a different subnet from the host.

28

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Refer to the exhibit. Host A attempts to establish a TCP/IP session with host C. During this attempt, a frame was captured with the source MAC address 0050.7320.D632 and the destination MAC address 0030.8517.44C4. The packet inside the captured frame has an IP source address 192.168.7.5, and the destination IP address is 192.168.219.24. At which point in the network was this packet captured?

leaving host A

leaving ATL

leaving Dallas

leaving NYC

29 Which prompt represents the appropriate mode used for the copy running-config startup-config command ?

Switch-6J>

Switch-6J#

Switch-6J(config)#

Switch-6J(config-if)#

Switch-6J(config-line)#

30

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Refer to the exhibit. A ping test between PC1 and PC2 failed. To troubleshoot the case, a network administrator issued the ipconfigcommand on PC1 and the show ip interface brief command on R1. Based on the outputs provided, what could be the possible cause of the problem?

Interface Fa0/0 on router R1 is administratively down.

Interface Fa0/0 on router R1 is configured with an incorrect IP address.

The NIC interface on PC1 is configured with an incorrect IP address.

The default gateway on PC1 is configured with an incorrect IP address.

31 A network administrator is tasked with connecting two workgroups that are configured to use different subnets. Which device should be selected to allow connectivity between users on the two networks?

hub

switch

router

wireless access point

32

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Refer to the exhibit. Host A is unable to reach the remote network. On the basis of the provided output, what is the cause of the problem?

Host A is configured with an incorrect IP address.

Host A is configured with an incorrect default gateway IP address.

There is no path to the remote network in the routing table of router R1.

Given that the destination network has a subnet mask of /16, host A and interface Fa0/1 of R1 are both configured with an incorrect subnet mask.

33 In which scenario would a crossover cable be required between Ethernet ports on the devices?

computer to hub

computer to router

computer to switch

switch to router

34 What happens when a node on an Ethernet network is creating a frame and it does not have the destination MAC address?

The node drops the frame.

The node sends out a Layer 3 broadcast message.

The node sends a message directly to the router for the address.

The node sends out an ARP request with the destination IP address.

35

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Refer to the exhibit. Communication for hosts X and Y is restricted to the local network. What is the reason for this?

Host X is assigned a network address.

Host Y is assigned a multicast address.

Host X and host Y belong to different networks.

The gateway addresses are broadcast addresses.

36 Which topology represents a collision-free environment?

Take Assessment - ENetwork Final Exam - CCNA Exploration: Aspectos básicos de

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networking (Version 4.0)

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37 Which router component will have contents erased when the command erase startup-config is issued?

flash

RAM

ROM

NVRAM

38

Refer to the exhibit. A network technician is trying to determine the correct IP address configuration for Host A. What is a valid configuration for Host A?

IP address: 192.168.100.19; Subnet Mask: 255.255.255.248; Default Gateway: 192.16.1.2

IP address: 192.168.100.20; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.100.17

IP address: 192.168.100.21; Subnet Mask: 255.255.255.248; Default Gateway: 192.168.100.18

IP address: 192.168.100.22; Subnet Mask: 255.255.255.240; Default Gateway: 10.1.1.5

IP address: 192.168.100.30; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.1.1

IP address: 192.168.100.31; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.100.18

39 A network technician has been monitoring traffic with Wireshark and notices an excessive number of broadcasts. Which device could be installed to reduce the size of the broadcast domain?

bridge

hub

router

switch

40 A routing issue has occurred in your internetwork. Which of the following type of devices should be examined to isolate this error?

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access point

host

hub

router

switch

41 What is true regarding network layer addressing? (Choose three.)

uses a flat structure

prevent broadcasts

heirarchical

uniquely identifies each host

48 bits in length

contains a network portion

42 A network technician has made a UTP cable that is terminated as T568A on one end and T568B on the opposite end. What type of cable has been constructed?

patch

console

crossover

straight-through

43 Which two types of cables are required in order to establish a console connection between a console port on a router and a computer with a USB interface? (Choose two.)

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44 An administrator makes changes to the default configuration of a router and saves them to NVRAM. After testing, it is discovered that the configurations did not have the desired effect and must be removed. What steps must be taken to remove the changes and return the router to the default configuration?

Reboot the router.

Use no version of the commands that are issued.

Issue the erase startup-config command, and then reboot the router.

Issue the erase running-config command, and then reboot the router.

45 Which statement is true about the running configuration file in a Cisco IOS device?

It affects the operation of the device immediately when modified.

It is stored in NVRAM.

It should be deleted using the erase running-config command.

It is automatically saved when the router reboots.

46

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Refer to the exhibit. A PC is communicating with another PC on a remote network. The two networks are connected by three routers. Which action will help to identify the path between the hosts?

Use the ipconfig command at the host.

Use the ipconfig/all command at the destination.

Use the tracert command at the host.

Use the ping command at the destination.

47

Refer to the exhibit. Which option correctly identifies the network address, range of host addresses, and the broadcast address for the network that contains host A?

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48 Two routers are connected via their serial ports in a lab environment. The routers are configured with valid IP addresses, but they cannot ping each other. The show interface serial0/0 command shows that the serial0/0 interface is up but the line protocol is down. What could be the cause of this problem?

The no shutdown command has not been applied to the interfaces.

The clock rate command has not been entered on the DCE interface.

The interface timers are not cleared.

The FastEthernet interface is emulating a serial interface by assigning it a timing signal.

Take Assessment - ENetwork Final Exam - CCNA Exploration: Aspectos básicos de networking (Version 4.0)

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49 How many host addresses may be assigned when using the 128.107.0.0 network address with a subnet mask of 255.255.248.0?

30

256

2046

2048

4094

4096

50 What are three characteristics of CSMA/CD? (Choose three.)

Devices can be configured with a higher transmission priority.

A jam signal indicates that the collision has cleared and the media is not busy.

A device listens and waits until the media is not busy before transmitting.

The device with the electronic token is the only one that can transmit after a collision.

All of the devices on a segment see data that passes on the network medium.

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After detecting a collision, hosts can attempt to resume transmission after a random time delay has expired.

51 Which communication tool allows real-time collaboration?

wiki

e-mail

weblog

instant messaging

52

Refer to the exhibit. With the router running NAT, what IP addresses can be applied to the computer to allow access to the Internet? (Choose three.)

192.168.18.38

192.168.18.48

192.168.18.49

192.168.18.52

192.168.18.59

192.168.18.63