Cisco 640-875 Building Cisco Service Provider Next ... · Test-King.640-875.144q Number : 640-875...

Test-King.640-875.144q

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Cisco 640-875Building Cisco Service Provider Next-Generation Networks, Part 1 (SPNGN1)

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Sections1. IP Networks2. IPv4 and IPv6 Addressing3. Switched Network Technologies4. Routed Network Technologies5. IP Services

6. Cisco Operating Systems and Platforms7. Transport Technologies8. Security in the Network9. Network Management10.Mix Questions

Exam A

QUESTION 1Given the IP address 10.106.170.145 255.248.0.0, which three options are the subnet that this IP address belongs to, the host IP address range on this subnet, andthe subnet broadcast IP address?

A. subnet = 10.104.0.0/13B. subnet = 10.106.0.0/13C. subnet = 10.112.0.0/13D. host IP address range = 10.104.0.1 to 10.111.255.254E. host IP address range = 10.106.0.1 to 10.106.255.254F. host IP address range = 10.106.0.1 to 10.119.255.254G. subnet broadcast IP address = 10.106.255.255H. subnet broadcast IP address = 10.111.255.255I. subnet broadcast IP address = 10.119.255.255

Correct Answer: ADHSection: IPv4 and IPv6 AddressingExplanation

Explanation/Reference:accurate answer.

QUESTION 2Which statement about STP operations is true?

A. One root bridge exists per collision domain.B. One root port is established per root bridge.C. One designated port is defined per segment.D. Non-designated ports are set in the forwarding state.E. One root port exists per broadcast domain.

Correct Answer: CSection: Switched Network TechnologiesExplanation

Explanation/Reference:nice answer.

QUESTION 3What two commands enable port security and allow the switch to dynamically learn the connected MAC address? (Choose two.)

A. switch5(config-if)#switchport port-securityB. switch5(config)#switchport port-securityC. switch5(config-if)#switchport port-security mac-address stickyD. switch5(config)#switchport port-security mac-address stickyE. switch5(config-if)#switchport port-security mac-address dynamicF. switch5(config-if)#switchport port-security mac-address auto

Correct Answer: ACSection: Switched Network TechnologiesExplanation

Explanation/Reference:obvious answer.

QUESTION 4Which Cisco IOS CLI command is used to verify the speed and duplex settings on the Fa0/1 porton a Cisco switch?


A. show ip interfaces fa0/1B. show interfaces fa0/1C. show interfaces fa0/1 switchportD. show ip interfaces briefE. show interfaces switchport

Correct Answer: BSection: Switched Network Technologies

Explanation

Explanation/Reference:fine.

QUESTION 5This show output is from the S7 Cisco Metro Switch and the PE7 Cisco ASR 9000 Series Router. Which configuration change(s) is/are needed to bring the S7FastEthernet 0/2 interface into the up/up state?

S7#show cdp neighbors<OUTPUT OMITTED> Device ID Local Intrfce Holdtme Capability Platform Port IDPE7 Fas 0/2 163 R ASR9K Ser Gig 0/0/0/0S78 Fas 0/23146 S I ME- 3400E- Fas 0/21S8 Fas 0/21 178 S I ME-3400E- Fas 0/21 *Mar 20 21:28:02.177:%ETHCNTR-3-HALF_DUX_COLLISION_EXCEED_THRESHOLD: Collisions at FastEthernet0/2 exceed threshold. Considered as loop-back.*Mar 20 21:28:02.177:%PM-4-ERR_DISABLE:loopback error detected on Fa0/2, putting Fa0/2 in err-disable state*Mar 20 21:28:03.184:%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/2, changed state to down S7#show interface fa0/2FastEthernet0/2 is down, line protocol isdown (err-disabled) Hardware is Fast Ethernet, address is e8ba.70b5.6c04 (bia e8ba.70b5.6c04) MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, reliability255/255, txload 1/255, rxload 1/255 Encapsulation ARPA, loopback not set Keepalive set (10 sec) Half-duplex, 10Mb/s, media type is 10/100BaseTX input flow-control is off, output flow-control is unsupported ARP type: ARPA, ARP Timeout 04:00:00 Last input 00:00:40, output 00:00:00, output hang never Last clearing of"show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy:fifo Output queue: 0/40 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 484423 packets input, 39349929bytes, 0 no buffer Received 484423 broadcasts (167203 multicasts) 0 runts, 0 giants, 0 throttles 1 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored 0 watchdog,167203 multicast, 0 pause input 0 input packets with dribble condition detected 972398 packets output, 128931949 bytes, 0 underruns 0 output errors, 46 collisions,4 interface resets 0 babbles, 0 late collision, 0 deferred 0 lost carrier, 0 no carrier, 0 PAUSE output 0 output buffer failures, 0 output buffers swapped out RP/0/RSP0/CPU0:PE7#show interfaces gi0/0/0/0GigabitEthernet0/0/0/0 is down, line protocol is down Interface state transitions: 4 Hardware is GigabitEthernet, addressis 4055.392f.40a8 (bia 4055.392f.40a8) Internet address is 192.168.107.70/24 MTU 1514 bytes, BW 100000 Kbit (Max:100000 Kbit) reliability 255/255, txload 0/255, rxload 0/255 Encapsulation ARPA, Full-duplex, 100Mb/s, THD, link type is force-up output flow control is off, input flowcontrol is off loopback not

set, ARP type ARPA, ARP timeout 04:00:00 Last input 00:00:00, output 00:00:35 Last clearing of "show interface" counters never 5 minute input rate 0 bits/sec, 0packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 972551 packets input, 128953765 bytes, 729 total input drops 172486 drops for unrecognized upper-level protocol Received 0 broadcast packets, 800781 multicast packets 0 runts, 0 giants, 0 throttles, 0 parity 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0abort 484545 packets output, 39360900 bytes, 0 total output drops Output 317283 broadcast packets, 167262 multicast packets 0 output errors, 0 underruns, 0applique, 0 resets 0 output buffer failures, 0 output buffers swapped out 4 carrier transitions

A. Enable loopback line on the S7 Fa0/2 interface then shut and no shut the Fa0/2 interface.B. Enable duplex half on the PE7 Gi0/0/0/0 interface then shut and no shut the Fa0/2 interface on S7.C. Change S7 Fa0/2 interface to duplex full and speed 100 then shut and no shut the Fa0/2 interface.D. Just need to no shut the Fa0/2 interface on S7.E. Just need to shut and no shut the Fa0/2 interface on S7.

Correct Answer: C

Section: Switched Network TechnologiesExplanation

Explanation/Reference:true answer.

QUESTION 6If a bridge port is in the non-designated state, which two statements about spanning-tree operations on this port are true? (Choose two.)

A. This port is in the Forwarding state.B. This port sends BPDUs on the attached link.C. This port has the lowest cost to the root bridge.D. This port is considered the root port.E. This port receives BPDUs.F. This port is in the Blocked state.

Correct Answer: EFSection: Switched Network TechnologiesExplanation

Explanation/Reference:Okay.

QUESTION 7Which three physical lines can provide local or remote access to a Cisco router or switch? (Choose three.)

A. Console portB. Modem portC. Virtual terminal linesD. Switch fabric interfaceE. Aux portF. ManagementEthernet0/RSP0/CPU0/0

Correct Answer: AEFSection: Switched Network TechnologiesExplanation

Explanation/Reference:

specific answer.

QUESTION 8Refer to the exhibit.

Company 1 has merged with Company 2. Company 1 is using RIPv2 as its IGP and Company 2 is using EIGRP as its IGP. EIGRP also is running between R1 andR2 over the WAN link. Which action must be taken to allow these two configurations?


The Company 1 RIP routes appear as external EIGRP routes within Company 2.

The Company 2 EIGRP routes appear as RIPv2 routes within Company 1.

A. Enable RIPv2 on the R2 router.B. Enable RIPv2 on the R2 router and on all internal routers of Company 2. Enable EIGRP on all internal routers of Company 1.C. Configure mutual route redistribution between RIPv2 and EIGRP on the R1 and R2 routers.D. Configure mutual route redistribution between RIPv2 and EIGRP on the R1 router.E. Configure mutual route redistribution between RIPv2 and EIGRP on the R2 router.

Correct Answer: DSection: Routed Network TechnologiesExplanation

Explanation/Reference:Explanation:

Real 28Cisco 640-875 Exam

QUESTION 9Which two statements about classful or classless routing protocol operations are true? (Choose two.)

A. Classful routing protocols do not send subnet mask information with theirrouting updates.B. Variable-length subnet masks are supported when using classful routing protocols.C. Examples of classless routing protocols include RIPv1, EIGRP, OSPF, andIS-IS.D. Classful routing protocols do not support discontiguous subnets.

Correct Answer: ADSection: Routed Network TechnologiesExplanation

Explanation/Reference:proper answer.

QUESTION 10Which Cisco IOS XR command displays information about statically configured routes and their corresponding interface or next-hop?

A. show ipv4 interfaces briefB. show route connectedC. show interfaces LoopbackD. show route staticE. show route ospf

Correct Answer: DSection: Cisco Operating Systems and PlatformsExplanation

Explanation/Reference:answer is upgraded.

QUESTION 11

Which Cisco IOS XR command presents a list of all interfaces, their Layer 3 address (if configured), and the status of the interface and protocol?

A. RP/0/RSP0/CPU0:PE1# show interface GigabitEthernet 0/0/0/1B. RP/0/RSP0/CPU0:PE1# show controllersC. RP/0/RSP0/CPU0:PE1(admin)# show hw-module fpd location allD. RP/0/RSP0/CPU0:PE1(config)# show bundleE. RP/0/RSP0/CPU0:PE1(admin)# show platformF. RP/0/RSP0/CPU0:PE1# show ipv4 interfaces brief

Correct Answer: FSection: Cisco Operating Systems and PlatformsExplanation

Explanation/Reference:most suitable answer.

QUESTION 12In Cisco IOS XR, which three operations is Admin mode used for? (Choose three.)

A. Secure Domain Router managementB. Configuration-register settingsC. Hostname configurationD. IOS XR software package upgradesE. Interface duplex settingsF. Domain-name configuration

Correct Answer: ABDSection: Cisco Operating Systems and PlatformsExplanation

Explanation/Reference:actual answer.

QUESTION 13Which Cisco IOS XR CLI command can you use to determine if the firmware on any of the line cards on the Cisco ASR 9000 Series Router needs to be upgraded?


A. RP/0/RSP0/CPU0:PE1#show platformB. RP/0/RSP0/CPU0:PE1(admin)#show platformC. RP/0/RSP0/CPU0:PE1#show hw-module fpd location allD. RP/0/RSP0/CPU0:PE1#show versionE. RP/0/RSP0/CPU0:PE1(admin)#show versionF. RP/0/RSP0/CPU0:PE1#show install active

Correct Answer: CSection: Cisco Operating Systems and PlatformsExplanation

Explanation/Reference:answer is complete.

QUESTION 14On Cisco IOS XR, for which purpose is the turboboot procedure used?

A. To boot the router into ROM Monitor modeB. To install the IOS XR software from scratch using the ROM Monitor modeC. To install and boot up a PIED. To install and boot up a SMUE. To perform an ISSUF. To speed up the time it takes to boot up the IOS XR router

Correct Answer: BSection: Cisco Operating Systems and PlatformsExplanation


accurate.

QUESTION 15Which Cisco IOS XR CLI command displays the running state of each line card (including the fan tray) on the Cisco ASR 9000 Series Router?

A. RP/0/RSP0/CPU0:PE1#show platformB. RP/0/RSP0/CPU0:PE1(admin)#show platformC. RP/0/RSP0/CPU0:PE1#show hw-module fpd location allD. RP/0/RSP0/CPU0:PE1(admin)#show hw-module fpd location allE. RP/0/RSP0/CPU0:PE1#show versionF. RP/0/RSP0/CPU0:PE1(admin)#show version

Correct Answer: BSection: Cisco Operating Systems and PlatformsExplanation

Explanation/Reference:confirmed answer.

QUESTION 16Which three statements about Cisco IOS XR CLI operations are true? (Choose three.)

A. Cisco IOS XR uses a three-stage configuration method.B. Committed changes are persistent across reboots in Cisco IOS XR.C. The commit replace global configuration command replaces the contents of the running configuration with the target configuration.D. The save global configuration command saves the contents of target configuration to the running configuration.E. There is no concept of a startup-config in Cisco IOS XR.F. The clear global configuration command erases the entire current running configuration.G. The show running-config global configuration command displays the configuration that occurs if Real 43

Cisco 640-875 Examthe contents of the uncommitted changed (target configuration) are committed to the running configuration.

Correct Answer: BCESection: Cisco Operating Systems and PlatformsExplanation


QUESTION 17Which two statements about Cisco IOS XE operations are true? (Choose two.)

A. Cisco IOS XE uses a two-stage configuration method.B. Using the commit global configuration command, all the committed changes will be persistent across reboots.C. The copy run start command makes the configuration changes persistent across reboots.D. The erase start command followed by the reboot command brings up the router without any configurations.E. There is no concept of a startup-config in Cisco IOS XE.

Correct Answer: CDSection: Cisco Operating Systems and PlatformsExplanation

Explanation/Reference:correct answer.

QUESTION 18Which Cisco IOS XR command is involved in enabling remote access?

A. RP/0/RSP0/CPU0:PE1(config)# router staticB. RP/0/RSP0/CPU0:PE1(config)# line console 0C. RP/0/RSP0/CPU0:PE1(config)# vrf defaultD. RP/0/RSP0/CPU0:PE1(config)# telnet ipv4 server max-servers 20E. RP/0/RSP0/CPU0:PE1(config)# username CISCO password LAB

Correct Answer: DSection: Cisco Operating Systems and PlatformsExplanation

Explanation/Reference:selected answer is right.

QUESTION 19A network engineer has configured an interface with various commands including the no shutdown command on an IOS-XR device. Both sides of the interface havebeen validated and the cable has been tested. Which command does the network engineer need to input?

A. switch#copy running-configuration startup-configurationB. switch#commit config

C. (config)#commitD. switch(config)#commit configE. switch#write memory

Correct Answer: CSection: Cisco Operating Systems and PlatformsExplanation

Explanation/Reference:real answer.


Real 46Cisco 640-875 ExamYou want to enable these three actions:

Enable the fa0/1 router's interface to obtain its interface IP address dynamically from a DHCP server.

Enable the router to configure the next hop ip address of the default route automatically based on the DHCP response.


Enable the router to act as the DHCP server for other clients connected to the router fa0/2 interface.

Which three Cisco IOS configurations must you use? (Choose three.)

A. ip route 0.0.0.0 0.0.0.0 fa0/1B. ip route 0.0.0.0 0.0.0.0 dhcpC. ip dhcp excluded-address 192.168.101.1!ip dhcp pool test1network 192.168.101.0 255.255.255.0default-router 192.168.101.1dns-server 200.165.200.101D. ip dhcp pool test2ip local pool test2 192.168.101.2 192.168.101.254default-router 192.168.101.1dns-server 200.1665.200.101E. int fa0/1ip address autoF. int fa0/1ip address dhcpG. int fa0/1ip helper-address dhcp

Correct Answer: BCFSection: Cisco Operating Systems and PlatformsExplanation


QUESTION 21You need to enable the "local-router" serial 0/0 connection to the "remote-router" to be authenticated using the "C!sco!23" password. The password cannot be sentin cleartext between the two routers. The "remote-router" has already been configured with all the required configurations. Which four Cisco IOS configurations arenecessary? (Choose four.)

A. hostname local-routerB. int s0/0encap hdlcC. int s0/0encap pppD. int s0/0ppp authentication papE. int s0/0ppp authentication chapF. ip domain-name test.com

G. username remote-router password C!sco!23H. username local-router password C!sco!23

Correct Answer: ACEGSection: Cisco Operating Systems and PlatformsExplanation

Explanation/Reference:to the point answer.

QUESTION 22Which two statements about Packet over SONET are true? (Choose two.)

A. POS is a Layer 2 technology that uses PPP in ATM encapsulation and SONET framing.B. The Layer 2 frame is encapsulated into a generic HDLC header (not Cisco proprietary HDLC) and placed into the appropriate SONET Payload Envelope.C. The FCS field can be set to 16 bits on one end and 32 bits on the other end of a POS connection without causing any connectivity issues.D. The Cisco POS interface supports Cisco HDLC and PPP encapsulation.E. POS can be used in a point-to-point or point-to-multipoint environment.

Correct Answer: BDSection: Transport TechnologiesExplanation

Explanation/Reference:sophisticated answer.

QUESTION 23Which component is integrated into the Cisco IPoDWDM interfaces?

A. ROADMB. transponderC. electrical cross connectD. E-O-E converterE. SONET/SDH controller

Correct Answer: BSection: Transport TechnologiesExplanation


QUESTION 24A Passive Optical Network is a point-to-multipoint FTTx network architecture that relies on which of the following?

A. Electrically powered optical splittersB. Unpowered optical splitterC. Customer optical network terminalD. Network interface controller

Correct Answer: BSection: Transport TechnologiesExplanation

Explanation/Reference:true answer.

QUESTION 25Which two commands can be used to enable LACP when configuring the interfaces for a 40 gigabit etherchannel? (Choose two.)

A. switch (config-if)# channel-group 1 mode activeB. switch (config-if)# channel-group 1 mode autoC. switch (config-if)# channel-group 1 mode desirableD. switch (config-if)# channel-group 1 mode passiveE. switch (config-if)# channel-group 1 mode LACP

Correct Answer: ADSection: Transport TechnologiesExplanation

Explanation/Reference:nice.


Real 53

Cisco 640-875 Exam

Based on the configurations shown, why is the serial link in up/down status?

A. Mismatch hostnamesB. Passwords are in plain textC. Mismatch of authentication typeD. Wrong configuration mode for command input

Correct Answer: CSection: Transport TechnologiesExplanation


QUESTION 27Which feature is used to protect the control plane of the router?

A. Port securityB. uRPFC. Routing protocol authenticationD. VRFE. SSHF. SSL

Correct Answer: CSection: Security in the NetworkExplanation

Explanation/Reference:answer is straight.

QUESTION 28Which statement about SSH is true?

A. It is a TCP/IP transport layer protocol.B. It uses TCP port number 22.C. It securely encrypts Telnet.D. It uses UDP port 23.E. Passwords are sent in clear text.F. It is an OSI network layer protocol.

Correct Answer: BSection: Security in the NetworkExplanation

Explanation/Reference:agree with the answer.

QUESTION 29Which two statements are correct regarding routing protocol authentication? (Choose two.)

A. MD5 authentication can only be established between Internal BGP peers.B. Authentication can be established using keychains on one peer and MD5 hashing on the other.C. UDP port 179 is used for BGP session authentication.D. MD5 passwords are never sent to a peer.E. Routers authenticate each routing update packet received.F. BGP peers can be configured with different passwords.

Correct Answer: DESection: Security in the NetworkExplanation

Explanation/Reference:upgraded answer.



Which two statements are true regarding the following configuration?

A. Users are authenticated using RADIUS.B. TACACS+ is configured for remote AAA.C. A TACACS+ AAA server group is configured.D. A TACACS+ server can be reached through the GigabitEthernet0/1/0/1 interface.E. Logging is configured to the local database.

Correct Answer: BDSection: Security in the NetworkExplanation

Explanation/Reference:absolutely perfect answer.

QUESTION 31What is a the best way to secure the route processor on a Cisco device?

A. Route processor traffic controlB. Control plane quality of serviceC. Control plane policingD. Access lists

Correct Answer: CSection: Security in the NetworkExplanation

Explanation/Reference:actual answer.

QUESTION 32Which best describes the relationship between user groups and task groups?

A. User groups include task ID's that are nested task groups.B. Groups can be nested within other groups.C. Tasks groups are not related to user groups.D. Task groups are assigned to user groups to established privileged levels.

Correct Answer: DSection: Security in the NetworkExplanation

Explanation/Reference:proper answer.

QUESTION 33What is the Cisco IOS command that is used to prevent the route of the incoming traffic from an unknown network?

A. Interface FastEthernet 0/0ip verify unicast source reachable-via any allow-defaultB. Interface FastEthernet 0/0ip verify multicast source reachable-via any allow-defaultC. Interface FastEthernet 0/0ip verify unicast destination reachable-via any allow-default

D. Interface FastEthernet 0/0ip verify multicast destination reachable-via any allow-default

Correct Answer: ASection: Security in the NetworkExplanation

Explanation/Reference:answer is obvious.

QUESTION 34Which three statements about the Cisco IOS XR task-based user authorization method are true? (Choose three.)

A. A user's association with a particular user group links that user to a particular set of task IDs. A user that is associated with a task ID can execute any operationassociated with that task ID.

B. Users can be assigned only to one user group.C. Every user group is associated with one or more task groups.D. Every task group is defined by a set of task IDs.E. Each user is assigned a privilege level.F. Each IOS XR CLI command is assigned a privilege level.G. A task ID maps the IOS XR command to a privilege level.

Correct Answer: ACDSection: Security in the NetworkExplanation



Which statement about this show command output is true?

A. The S78 switch is performing remote-SPAN.B. All traffic that ports Fa0/1, Fa0/2, Fa0/3, and Fa0/4 send and receive is monitored.C. All traffic that port Gi0/1 sends and receives is monitored.D. The sniffer (network analyzer) should be connected to the Gi0/1 port.E. The SPAN destination interface replicates the source interface encapsulation method.

Correct Answer: DSection: Network ManagementExplanation

Explanation/Reference:defined answer.

QUESTION 36Which three statements about Cisco Discovery Protocol operations on a Cisco ME3400 switch are true? (Choose three.)

A. Cisco Discovery Protocol is enabled by default on NNI ports.B. Cisco Discovery Protocol is enabled by default on all NNI, ENI, and UNI ports.C. Cisco Discovery Protocol is disabled by default on ENI ports.D. Cisco Discovery Protocol is not supported on NNI or ENI ports.E. Cisco Discovery Protocol is not supported on UNI ports.

Correct Answer: ACESection: Network ManagementExplanation

Explanation/Reference:finest answer.

QUESTION 37Currently, a Cisco IOS XR router is configured to send IP SLA probes to a network management station that is acting as the IP SLA target device. How can IP SLAmeasurement accuracy be improved and also provide additional statistics?

A. Use ICMP echo probes instead of UDP echo probes.B. Configure another Cisco router as the target and enable that other Cisco router for IP SLA Responder operations.C. Increase the rate (frequency) at which a specified IP SLA operation is sent into the network.D. Use UDP echo probes instead of ICMP echo probes and enable UDP echo service on the target network management station.E. Enable IP SLA Responder service on the target network management station.

Correct Answer: BSection: Network ManagementExplanation

Explanation/Reference:rightful.


Which three statements about this show output are true? (Choose three.)

A. Logging to the circular logging buffer has been disabled.B. All severity levels messages can be logged to the terminal lines other than the console.C. The logging facility has been set to "critical".D. Messages with Severity Levels 0, 1, and 2 are sent to the syslog server.E. 169 messages have been sent to the syslog server.


F. The logging buffer size is set to 8192 bytes.

Correct Answer: ABDSection: Network ManagementExplanation


QUESTION 39Which two statements about Cisco IOS XR NTP configuration are true? (Choose two.)

A. A network device can obtain NTP time information in three ways: polling the NTP server, listening to NTP broadcasts, and listening to NTP multicasts.B. NTP authentication supports MD5, SHA1, or SHA2.C. Client mode is a peer-to-peer mode.D. The two types of poll-based NTP associations are client mode and symmetric active mode.E. The Cisco IOS-XR implementation of NTP supports stratum 1 service.F. In client mode, clients can dynamically learn the NTP sever IP address by listening to the NTP server broadcasts or multicasts.

Correct Answer: ADSection: Network ManagementExplanation



Real 60Cisco 640-875 ExamA network administrator is setting up a new core router to be a secondary NTP server. What command would need to be added to NTP Client configuration shown?

A. NTP server 209.165.200.227 preferNTP server 209.165.200.226B. NTP server 209.165.200.227NTP server 209.165.200.226 secondaryC. NTP server 209.165.200.227 preferNTP server 209.165.200.226 backupD. NTP server 209.165.200.227NTP server 209.165.200.226 prefer

Correct Answer: ASection: Network ManagementExplanation



A new policy requires all configurations to be saved to flash and backed up to a TFTP server based off the hostname at 12:05am every day. Based upon theconfiguration, which two commands are required to accomplish this? (Choose two.)

A. kron occurrence daily-config-backup at 0:05 recurringpolicy-list backup-configB. kron occurrence daily-config-backup at 12:05 recurringpolicy-list backup-configC. kron policy-list backup-configcli write memorycli show running-config| redirect tftp://209.165.200.226/$h.cfgD. kron policy-list backup-configcli write memorycli show running-config| redirect tftp://209.165.200.226/$hostname.cfg

Correct Answer: ACSection: Network ManagementExplanation


QUESTION 42What is the measurement of the Cisco IP SLA Operation ICMP Pather Jitter?

A. Measures delay and jitter on networks utilizing UDP trafficB. Measures packet loss, jitter, and delay per hop in IP networksC. Measures round-trip delay only in UDP traffic networksD. Measures IP networks-only round-trip delay



valid answer.

QUESTION 43Which two commands are required to enter enable mode on a console port without entering a password? (Choose two.)

A. Privilege 15B. Input SSHC. Line VTY 0 4D. No loginE. Privilege 0

Correct Answer: ADSection: Network ManagementExplanation


QUESTION 44What is the Cisco recommended way to secure SNMPv2 community strings?

A. Configure complex community string names and avoid using default settingsB. Create multiple read/write strings to keep the attacker guessingC. Use access-lists to limit the amount of access to the community stringsD. Use SNMPv3 to limit the amount of memory overhead

Correct Answer: CSection: Network ManagementExplanation


QUESTION 45What is the Cisco IOS command to export IPv6 flows to Collector 209.165.200.200/24?

A. Switch(config)#ipv6 flow-export destination 209.165.200.200 9996B. Switch(config)#ip flow-export destination 209.165.200.200 9996C. Switch(config)#ip flow-export destination 209.165.200.200 255.255.255.0

D. Switch(config)#ip flow-export destination fe08::0ABC:1 9996



QUESTION 46Which layer of the OSI Model does Label Distribution Protocol operate at?

A. Data LinkB. TransportC. ApplicationD. PresentationE. SessionF. Network



QUESTION 47A network engineer has been provided subnet 209.165.202.128/27. What is the last usable IP address in this network and what is the subnet mask?


A. 209.165.202.158 and 255.255.255.224B. 209.165.202.159 and 255.255.255.192

C. 209.165.202.158 and 255.255.255.192D. 209.165.202.128 and 255.255.255.192E. 209.165.202.128 and 255.255.255.224


Explanation/Reference:genuine answer.

QUESTION 48On Switch 5, which command would configure VLAN 5 as root?

A. switch5#spanning-tree vlan 5 priority 0B. switch5(config)#spanning-tree vlan 5 priority 61440C. switch5(config)#spanning-tree vlan 5 rootD. switch5(config)#spanning-tree vlan 5 priority 0E. switch5(config-if)#spanning-tree rootguard



QUESTION 49Which EIGRP feature in IOS, IOS-XE, and IOS-XR will prevent the EIGRP process from automatically forming a neighbor adjacency?

A. Access-listsB. Link speed and duplexC. MTU SizeD. Passive interfaceE. Bandwidth and delay

Correct Answer: DSection: Network Management

Explanation


QUESTION 50A Network Engineer configured NAT for external access but one individual at a time can access the external network. What NAT feature will allow all internaldevices to share the same NAT IP address?

A. Static mappingB. Overload featureC. NAT DHCP featureD. Default route statement



QUESTION 51Which command set is required to enable a remote SNMP query on an IOS-XR router?

A. control-planemanagement-planeinbandinterface allallow SNMPcommitB. control-planemanagement-planeinbandinterface allallow SNMPC. snmp server hostsnmp server contactsnmp-server community stringcommitD. snmp server hostsnmp server contactsnmp-server community string



QUESTION 52What is the minimum version of DOCSIS that will support IPv6?

A. Version 1B. Version 2C. Version 3D. Version 3.1



QUESTION 53Which multiplexing technology has minimal impact to production traffic when changes are implemented to a live circuit?

A. Dark fiberB. DWDMC. IPoDWDMD. ROADM



QUESTION 54A network administrator set-up AAA on a new router. While the TACACS server was down for

maintenance, the administrator was still unable to login with the backup password. Which keyword did the administrator leave off of the AAA configuration?

A. The keyword local is missing from the AAA authentication login statement.B. The keyword local is missing from the AAA authentication exec statement.C. The keyword default is missing from the login authentication.D. The command line privilege level 0 is missing from the VTY configuration.

Correct Answer: BSection: Network Management

Explanation


QUESTION 55Given the IP address 172.16.170.15 255.255.224.0, which three options are the subnet that this IP address belongs to, the host IP address range on this subnet,and the subnet broadcast IP address? (Choose three.)

A. subnet = 172.16.160.0/19B. subnet = 172.16.170.0/19C. subnet = 172.16.192.0/19D. host IP address range = 172.16.160.1 to 172.16.191.254E. host IP address range = 172.16.170.1 to 172.16.170.254F. host IP address range = 172.16.160.1 to 172.16.223.254G. subnet broadcast IP address = 172.16.170.255H. subnet broadcast IP address = 172.16.191.255I. subnet broadcast IP address = 172.16.223.255

Correct Answer: ADHSection: Mix QuestionsExplanation



Which two options are the number of broadcast domains and collision domains shown in the exhibit? (Choose two.)

A. 1 collision domainB. 2 collision domainsC. 4 collision domainsD. 7 collision domainsE. 1 broadcast domainF. 2 broadcast domainsG. 4 broadcast domainsH. 7 broadcast domains

Correct Answer: DFSection: Mix QuestionsExplanation

Explanation/Reference:definite answer.


Which two options are the number of broadcast domains and collision domains shown in the exhibit? (Choose two.)

A. 2 collision domainsB. 4 collision domainsC. 5 collision domainsD. 8 collision domainsE. 2 broadcast domainsF. 4 broadcast domainsG. 5 broadcast domains

H. 8 broadcast domains

Correct Answer: CESection: Mix QuestionsExplanation


QUESTION 58Which three IP addresses are valid for hosts that belong to the 10.152.0.0/13 subnet? (Choose three.)

A. 10.152.0.0/13B. 10.153.0.1/13C. 10.158.255.255/13D. 10.159.255.254/13E. 10.160.0.1/13F. 10.161.0.1/13

Correct Answer: BCDSection: Mix QuestionsExplanation


QUESTION 59Which type of IPv6 address does the ff00::/8 prefix denote?


A. Local loopbackB. Global unicast

C. Unique link localD. Link local unicastE. MulticastF. Anycast

Correct Answer: ESection: Mix QuestionsExplanation



Robert is sending an instant message to Mary. The message will be broken into a series of packets that will traverse all network devices. Which four options are theMAC and IP source and destination addresses that will populate these packets as they are forwarded from Router2 to Router1? (Choose four.)

A. source MAC = 0000.00a1.2222B. source MAC = 0000.000c.0123C. destination MAC = 0000.00a1.3333D. destination MAC = 0000.000c.0124E. source IP 10.1.2.2

F. source IP 10.1.1.253G. destination IP = 10.1.3.3H. destination IP = 10.1.1.254

Correct Answer: BDEGSection: Mix QuestionsExplanation


QUESTION 61Which Layer 2 WAN protocol uses DLCI as the virtual circuit identifier?

A. ATMB. PPPC. Frame RelayD. Packet over SONETE. Metro Ethernet

Correct Answer: CSection: Mix QuestionsExplanation


QUESTION 62Which pair of mechanisms are often used together to allow dynamic routing over a secured site-to- site VPN tunnel?

A. GRE + SSLB. VTI + SSLC. VRF + SSLD. GRE + IPsecE. L2TP + IPsecF. VRF + IPsec

Correct Answer: D

Section: Mix QuestionsExplanation


QUESTION 63Which Cisco router feature allows multiple independent routing table instances to co-exist within the same router at the same time?

A. Virtual ContextsB. Virtual MachinesC. VTID. VRFE. VPLSF. GRE

Correct Answer: DSection: Mix QuestionsExplanation


QUESTION 64Which three statements correctly describe DSL-based Internet services for residential users? (Choose three.)

A. Most residential deployments use PPPoE encapsulation where the end user PC or the DSL CPE will require a PPP username and password configuration.B. Most residential deployments use PPPoA encapsulation where the DSL CPE device needs to provide Layer 3 routing functions.C. The most commonly installed DSL variant for residential deployments is ADSL.D. The most commonly installed DSL variant for residential deployments is SDSL.E. The most commonly installed DSL variant for residential deployments is HDSL.F. At the DSL service provider location, a DSLAM typically is used to terminate all the PPP connections of the DSL subscribers.G. At the DSL service provider location, a DSLAM is used to terminate and then aggregate the DSL connections over an ATM network.

Correct Answer: ACGSection: Mix QuestionsExplanation

Explanation/Reference:well explained answer.


Which layer(s) of the TCP/IP model operates end-to-end (Host A to Host B)?

A. Physical layerB. Link layerC. Transport and application layersD. Link and internet (network) layersE. Physical and link layers



QUESTION 66Which two applications require the network to have the least amount of jitter, delay, and packet loss? (Choose two.)

A. FTPB. SSHC. VoIPD. emailE. Cisco TelePresenceF. web browsing

Correct Answer: CESection: Mix QuestionsExplanation


QUESTION 67What is the default spanning-tree mode of an NNI port on a Cisco ME3400 switch?

A. Multiple spanning tree (mst)B. Per-vlan rapid spanning tree (rapid-pvst)C. Per-vlan spanning tree (pvst)D. IEEE 802.1D (stp)

Correct Answer: BSection: Mix QuestionsExplanation

Explanation/Reference:answer is specific.

QUESTION 68Which two statements about transparent bridging operations are true? (Choose two.)

A. A bridge builds its MAC address table dynamically using the spanning-tree protocol.B. A bridge operates at the data link layer.C. A bridge sends unknown unicast frames out on all ports except the incoming port.D. A bridge forwards traffic based on the destination IP address.E. All the ports on the bridge belong to the same collision domain.

Correct Answer: BCSection: Mix QuestionsExplanation



According to this show output, what are sticky MAC addresses?


A. Dynamically learned MAC addresses on the port that are stored in the MAC address table and also in the start-up configurationB. Statically configured MAC addresses on the port that are stored in the MAC address tableC. Statically configured MAC addresses on the port that are stored in the start-up configurationD. Dynamically learned MAC addresses on the port that are stored in the running configuration



QUESTION 70When two or more different routes exist to the same destination that have been learned from two different routing protocols, what does a router use to determinethe best route?

A. Routing protocol metricB. Administrative distance

C. Hop countD. Path costE. Local preference



QUESTION 71Which two statements about NetFlow support on Cisco IOS XR are true? (Choose two.)

A. Cisco IOS XR supports NetFlow version 9 export format only.B. NetFlow version 9 is a flexible and extensible means to carry NetFlow records from a network node to a collector.C. IP flow is based on a set of four parameters only (source IP address, destination IP address, source port, and destination port).D. A NetFlow flow is the bidirectional sequence of packets on a single interface.

Correct Answer: ABSection: Mix QuestionsExplanation


QUESTION 72What are the four steps to enable SSH v1 and v2 server on Cisco IOS XR routers? (Choose four.)

A. Configure a host name.B. Configure a domain name.C. Generate a crypto key pair.D. Import the router identity certificate and the CA root certificate to the router.E. Configure an ISAKMP policy.F. Bring up an SSH server using the ssh server command.

Correct Answer: ABCFSection: Mix Questions

Explanation


QUESTION 73Generally, which way is the fastest to open S3 and S4 service requests to the Cisco TAC?

A. Use the Smart Call Home feature.B. Use the online TAC Service Request Tool.C. Call Cisco TAC on the phone.D. Email Cisco TAC with a high-priority email.E. Export the related Syslog/NetFlow information to TAC directly.



QUESTION 74Which SNMPv2/SNMPv3 operation is not supported in Cisco IOS XR software?

A. get-bulkB. get-requestC. informD. trapE. set-request


Explanation/Reference:exact answer.

QUESTION 75What is the result of using the Cisco IOS copy tftp: run command?

A. The running configuration on the Cisco IOS device is backed up to the TFTP server.B. Only new configuration parameters from the saved configuration file on the TFTP server are added to the running configuration. No changes to any existing

configuration parameters in the running configuration are made.C. The running configuration on the Cisco IOS device is replaced with the saved configuration file on the TFTP server.D. The configuration stored in the TFTP server is merged with the running configuration on the Cisco IOS device.E. The saved configuration file from the TFTP server is copied to the target configuration.



QUESTION 76What is the SDH equivalent of the SONET STS-12 framing format?

A. SDH STM-1B. SDH STM-4C. SDH STM-12D. SDH STM-16E. SDH STM-64


Explanation/Reference:rightful answer.

QUESTION 77What are the three RFC 1918 IPv4 private address ranges? (Choose three.)


A. 10.0.0.0 - 10.255.255.255B. 172.16.0.0 - 172.255.255.255C. 172.16.0.0 - 172.31.255.255D. 192.168.0.0 - 192.168.31.255E. 192.168.0.0 - 192.168.255.255

Correct Answer: ACESection: Mix QuestionsExplanation

Explanation/Reference:answer is complete.

QUESTION 78With a distance vector routing protocol like RIPv1, when is a route in the routing table placed in the "possibly down" state?

A. When a router receives an update from its neighbor router about a network in its routing table but with a worse metricB. When a router receives an update from its neighbor router about a network in its routing table but with a better metricC. When a router receives an update from its neighbor router indicating that a previously accessible network is now inaccessibleD. Whenever the router receives an update from its neighbor about a newly learned networkE. Whenever the router interface that is used to reach the remote network goes down



QUESTION 79

Given the CIDR address range of 200.165.160.0 to 200.165.191.255, what is the CIDR block?

A. 200.165.160.0/17B. 200.165.160.0/18C. 200.165.160.0/19D. 200.165.160.0/20E. 200.165.160.0/21



QUESTION 80Given these four Class B networks: 172.104.0.0, 172.105.0.0, 172.106.0.0, 172.107.0.0, what is the supernet (CIDR) address that summarizes these four Class Bnetworks?

A. 172.104.0.0/12B. 172.104.0.0/13C. 172.104.0.0/14D. 172.104.0.0/15


Explanation/Reference:valid answer.

QUESTION 81What does a transparent LAN switch use to build its CAM table?

A. BPDU messages exchanged with neighbor bridgesB. STP messages exchanged with neighbor bridgesC. Dynamic routing protocol updates from neighbor bridgesD. Analysis of the source MAC address of incoming frames on the bridge ports




Using a single Class C network of 192.168.1.0/24 and VLSM, which two options specify the number of subnets that are needed to support this network and whatare the minimum sizes of the required subnets? (Choose two.)

A. 4 subnetsB. 6 subnetsC. 8 subnetsD. 26 subnetsE. 28 subnets

F. Two /30 subnets + one /28 subnets + one /29 subnetsG. Four /30 subnets + two /28 subnetsH. Six /30 subnets + two /28 subnetsI. Twenty six /30 subnetsJ. Twenty eight /30 subnets

Correct Answer: BGSection: Mix QuestionsExplanation

Explanation/Reference:good answer.

QUESTION 83Which option is enabled by default on Cisco IOS and IOS XE routers?

A. IPv6 unicast routingB. IPv4 unicast routingC. IPv6 and IPv4 unicast routingD. SSH serverE. HTTP serverF. SSH and HTTP serverG. AAA console login authentication


Explanation/Reference:authentic answer.

QUESTION 84Using VLSM, how many /30 subnets can be derived from a single /27 Class C subnet?

A. 1B. 2C. 4D. 8

E. 12F. 16


Explanation/Reference:answer is absolutely right.

QUESTION 85On Cisco IOS Switches, which port security violation mode results in frames from non-allowed MAC address being dropped, log message created, and SNMP trapsent?

A. ProtectB. Restrict


C. ShutdownD. Err-disabledE. Log



QUESTION 86Which statement about 10/40/100 GigabitEthernet interface configuration on Cisco IOS XR is true?

A. Use the negotiation auto command in interface configuration mode to enable link auto- negotiation to ensure that devices that share a link segment are

automatically configured with the highest performance.B. The configuration supports only full-duplex operation.C. The range for MTU values is 64 bytes to 1518 bytes on the interface.D. The interface has no flow control configuration.



QUESTION 87Which statement about a root bridge in an STP domain is true?

A. It has the highest root ID in the STP domain.B. It has the lowest bridge ID in the STP domain.C. It contains non-designated ports.D. It contains root ports.E. It has the highest priority value.


Explanation/Reference:particular answer.

QUESTION 88Which Cisco IOS XR command displays traffic counters for an individual interface that is configured on the router?

A. RP/0/RSP0/CPU0:PE1(config)# show bundleB. RP/0/RSP0/CPU0:PE1# show interfaces GigabitEthernet 0/0/0/1C. RP/0/RSP0/CPU0:PE1# show controllers GigabitEthernet 0/0/0/1D. RP/0/RSP0/CPU0:PE1(admin)# show platformE. RP/0/RSP0/CPU0:PE1(admin)# show hw-module fpd location allF. RP/0/RSP0/CPU0:PE1# show interfaces brief


Explanation/Reference:Real 109

QUESTION 89

Select and Place:

Correct Answer:

Section: IP NetworksExplanation


QUESTION 90

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QUESTION 91

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QUESTION 92

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QUESTION 93

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QUESTION 94

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QUESTION 95

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QUESTION 96

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Section: IPv4 and IPv6 AddressingExplanation


QUESTION 97

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QUESTION 98

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QUESTION 99

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QUESTION 100Exhibit:

Select and Place:

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QUESTION 101

Hot Area:

Correct Answer:

Section: Network ManagementExplanation

Explanation/Reference:Routers d, f and g onlyCorrect network topology is Topology 2Use “show cdp neighbor” to check and determine the topology.

QUESTION 102

Select and Place:

Correct Answer:

Section: Mix QuestionsExplanation


QUESTION 103What is the term that refers to a device that has no Customer Equipment directly connected to it in a Service Provider network?

A. Provider Edge RouterB. Customer Edge RouterC. Non-customer Edge RouterD. Provider RouterE. Provider Edge Provider Router

Correct Answer: DSection: IP NetworksExplanation


QUESTION 104

Refer to the exhibit.

Host 3 on Network A is sending data to Host 8 on Network B. Which address is the default gateway of Host 3?

A. The address of the switch interface that is connected to router interface Fa0/0 Real 6Cisco 640-875 Exam

B. The address of the switch interface that is connected to router interface Fa0/1C. The address of the host that is connected to Network AD. The address of the host that is connected to Network BE. The address of the router interface Fa0/0F. The address of the router interface Fa0/1

Correct Answer: ESection: IP NetworksExplanation


QUESTION 105The PE and CE interfaces are in the UP/UP state. The junior Network Engineer has validated Layer 3 functionality by pinging the adjacent interface, however thecustomer is unable to access the provider network. What should be your next troubleshooting step?

A. Validate that the encapsulation method is utilizing Point-to-Point ProtocolB. Validate that the destination customer network is in the correct VRFC. Validate that the circuit clocking is inaccurate and needs to be synchronized on both sidesD. Check the physical connection between both devices to ensure stabilityE. Identify incorrect RADIUS configuration is present on the PE device

F. Check that an access-list is mis-configured on the loopback 0 interface and needs to be corrected

Correct Answer: BSection: IP NetworksExplanation


QUESTION 106What are two differences between WAN and LAN? (Choose two.)

A. The customer has explicit control of their own WAN.B. The customer can modify the service provider route distinguishers.C. The customer has explicit control of their LAN.D. The customer is aware of the infrastructure within the WAN.E. WANs will differ from LANs with attributes such as latency and distance.

Correct Answer: CESection: IP NetworksExplanation



QUESTION 107Which of the following correctly pairs the dotted decimal subnet mask with the correct number of binary bits that represent the subnet mask?

A. 255.255.255.192 and /25B. 255.255.255.248 and /28C. 255.255.255.224 and /26D. 255.255.255.248 and /27E. 255.255.255.240 and /28F. 255.255.255.240 and /16

Correct Answer: E



QUESTION 108What are two benefits of a star network topology? (Choose two.)

A. Disruption of the entire network is not required when adding new machines.B. Any problem which leaves the network inoperable can be traced to the central hub.C. This network type requires less cable as compared to linear bus topology.D. The performance of one of the numerous nodes cannot reflect on the performance of other nodes.E. The performance of the entire network is directly dependent on the performance of the hub.

Correct Answer: ABSection: IP NetworksExplanation

Explanation/Reference:to the point answer.

QUESTION 109You are having problems browsing to http://www.cisco.com from your laptop that is running Windows. Your laptop is connected directly to a default gateway, whichis a Cisco ISR G2 router. Which four options are the basic troubleshooting steps that you should use to troubleshoot this issue? (Choose four.)


A. Issue the ipconfig command from the Windows command line on your laptop to determine your laptop IP address and the default gateway IP address.B. Issue the ipconfig /all command from the Windows command line on your laptop to determine the DNS server IP address.C. Issue the ping {default gateway IP address} command from the Windows command line on your laptop to verify connectivity to the default gateway.D. Issue the ping {DNS server IP address} command from the Windows command line on your laptop to verify connectivity to the DNS server.E. Issue the ping tcp www.cisco.com 80 command from the Windows command line on your Real 10

Cisco 640-875 Examlaptop to verify TCP port 80 connectivity to the www.cisco.com server.

F. From the ISR G2 CLI, issue the ping tcp www.cisco.com 80 command to verify TCP port 80 connectivity to the www.cisco.com server.G. From the ISR G2 CLI, issue the ISR-G2#tracert www.cisco.com command to verify connectivity to the www.cisco.com server.H. From the ISR G2 CLI, issue the ISR-G2#nslookup www.cisco.com command to determine the IP address of the www.cisco.com server.

Correct Answer: ABCDSection: IP NetworksExplanation

Explanation/Reference:excellent answer.

QUESTION 110Which statement about IPv6 global unicast addresses is true?

A. The first 3 bits is 001.B. The first 4 bits is 0011.C. The first 4 bits is 1111.D. The first 16 bits is FE80 in hex.E. The first 16 bits is FF00 in hex.F. The first 16 bits is 2002 in hex.G. The first 16 bits is 3FFE in hex.

Correct Answer: ASection: IPv4 and IPv6 AddressingExplanation


QUESTION 111

Select and Place:

Correct Answer:

Section: Routed Network TechnologiesExplanation


QUESTION 112

Correct Answer: Answer: Click on PE5:Section: Routed Network TechnologiesExplanation

Explanation/Reference:Config tInterface lo0ipv4 address 10.5.1.1/32ipv6 address 2001:db8:10:5:1::1/128commitinterface gi0/0/0/0no shutipv4 address 192.168.105.50/24ipv6 address 2001:db8:192:168:105::50/64

router eigrp 1address-family ipv4interface loopback0interface gi0/0/0/0address-family ipv6interface loopback0interface gi0/0/0/0commitVerify by pinging the ipv4 and ipv6 loopback IP addresses of CE5.

QUESTION 113

Select and Place:

Correct Answer:

Section: IP ServicesExplanation


QUESTION 114

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Section: IP ServicesExplanation


QUESTION 115

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Correct Answer:

Section: Cisco Operating Systems and PlatformsExplanation


QUESTION 116

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Correct Answer:

Section: Cisco Operating Systems and PlatformsExplanation


QUESTION 117

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QUESTION 118

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Section: Routed Network TechnologiesExplanation


QUESTION 119Given the IP address of 209.168.200.155/27, which two options are the subnet that this IP address belongs to and the subnet broadcast IP address? (Choose two.)

A. 209.168.200.64 255.255.255.224B. 209.168.200.96 255.255.255.224C. 209.168.200.128 255.255.255.224D. 209.168.200.95E. 209.168.200.127F. 209.168.200.159

Correct Answer: CFSection: IPv4 and IPv6 AddressingExplanation

Explanation/Reference:appropriate answer.

QUESTION 120Which is a valid IPv6 Link Local address?

A. FF00::1B. 224.0.0.5::1C. FE80::1D. FE70::1E. 169.254.0.0/16

Correct Answer: CSection: IPv4 and IPv6 AddressingExplanation


QUESTION 121What is the size difference in bits between an IPv4 address and an IPv6 address?

A. 128B. 100C. 98D. 96E. 32

Correct Answer: DSection: IPv4 and IPv6 AddressingExplanation

Explanation/Reference:obvious answer.

QUESTION 122Given the subnet of 209.165.201.0/27, which subnet range will make the most efficient use of the address block for connecting to customer edge devices?

A. 209.165.201.1/32B. 209.165.201.1/31C. 209.165.201.1/30D. 209.165.201.1/29E. 209.165.201.1/24

Correct Answer: BSection: IPv4 and IPv6 AddressingExplanation




Given the Class C IP network of 192.168.1.0, using VLSM, which five subnets meet the requirements in the exhibit? (Choose five.)

A. 192.168.1.0/27B. 192.168.1.32/27C. 192.168.1.48/27D. 192.168.1.48/28E. 192.168.1.64/28F. 192.168.1.80/28G. 192.168.1.80/29H. 192.168.1.88/30I. 192.168.1.96/30

Correct Answer: ABEFI


Explanation/Reference:Answer: A,B,E,F,IExplanation:

QUESTION 124Given a ring topology, which loop prevention mechanism provides the fastest reconvergence time after a link failure?

A. Rapid Per-VLAN Spanning Tree ProtocolB. Resilient Ethernet ProtocolC. Multiple Spanning Tree ProtocolD. Spanning Tree Protocol

Correct Answer: BSection: IPv4 and IPv6 AddressingExplanation



QUESTION 125Which three of the following components must be elected before the Spanning Tree Protocol can converge in a switched LAN? (Choose three.)

A. Designated portsB. Alternate portsC. Converged portsD. Root bridgeE. Root portsF. Backup ports

Correct Answer: ADESection: IPv4 and IPv6 AddressingExplanation


QUESTION 126Which three statements about the ARP function are true? (Choose three.)

A. ARP is used to determine an IP address.B. An ARP request is broadcast at Layer 3.C. An ARP response is broadcast at Layer 2.D. ARP tables are maintained on Layer 3 devices.E. The destination MAC address of an ARP request is that of the ARP responder.F. ARP requests are broadcast at Layer 2.G. ARP resolves MAC addresses to NET addresses.H. ARP uses 0x0806 as the Type field in an Ethernet frame.

Correct Answer: DFHSection: Switched Network TechnologiesExplanation

Explanation/Reference:answer is justified.

QUESTION 127

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Correct Answer:

Section: Transport Technologies

Explanation


QUESTION 128

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Correct Answer:

Section: Transport TechnologiesExplanation


QUESTION 129

Hot Area:

Correct Answer:


Explanation/Reference:Gi0/0/0/2Correct network topology is Topology 2Use “show cdp neighbor” to check and determine the topology.

QUESTION 130

Hot Area:

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Explanation/Reference:Fa0/21Correct network topology is Topology 2Use “show cdp neighbor” to check and determine the topology.

QUESTION 131

Hot Area:

Correct Answer:


Explanation/Reference:Gi0/0/0Correct network topology is Topology 2Use “show cdp neighbor” to check and determine the topology.

QUESTION 132When EIGRP is enabled on Cisco IOS XR, which EIGRP feature is on by default?

A. no auto-summaryB. stub routingC. unequal cost paths load-balancingD. no ip eigrp split-horizonE. eigrp authentication

Correct Answer: ASection: Routed Network TechnologiesExplanation

Explanation/Reference:suitable answer.



R1 and R2 are running RIPv1 for the 10.0.0.0 and 192.168.1.0 networks. No default or static routes have been configured on the routers. Which two statementsabout this topology are true? (Choose two.)

A. R1 summarizes the 10.1.1.0/24 subnet to 10.0.0.0/8 when it sends its RIPv1 routing updates to R2. R2 summarizes the 10.2.2.0/24 subnet to 10.0.0.0/8 when itsends its RIPv1 routing updates to R1.

B. To support this topology, R1 and R2 must be configured so that RIPv1 auto-summary is disabled.C. R1 sends information about the 10.1.1.0/24 subnet when it sends its RIPv1 routing updates to R2. R2 sends information about the 10.2.2.0/24 subnet when it

sends its RIPv1 routing updates to R1. Example of RIPv1 update from R1 to R2:RIP: build update entriesnetwork 10.1.1.0/24 metric 1D. Hosts on the 10.1.1.0/24 subnet are unable to communicate with hosts on the 10.2.2.0/24 subnet.E. R1 accepts the 10.2.2.0/24 RIPv1 routing updates from R2 and installs the 10.2.2.0/24 route in its routing table. R2 accepts the 10.1.1.0/24 RIPv1 routing

updates from R1 and installs the 10.1.1.0/24 route in its routing table.

Correct Answer: ADSection: Routed Network TechnologiesExplanation

Explanation/Reference:answer is correct.

QUESTION 134According to RFC 2080, which routing protocol is compatible with IPv6?

A. RIPv2B. OSPFC. RIP-NGD. EIGRPv6

E. OSPFv2F. EIGRP-NG

Correct Answer: CSection: Routed Network TechnologiesExplanation


QUESTION 135A customer uses OSPF as their Customer Edge routing protocol and remote sites are reporting 10.0.0.0/8 in the routing tables. What is most likely the mis-configuration in the redistribution?

A. Improper route summarization on CE routerB. Incorrect network statementC. Incorrect K value configuredD. Configuration missing subnets key wordE. Stub network is sending summarized routes

Correct Answer: DSection: Routed Network TechnologiesExplanation


QUESTION 136The network administrator is using a Windows PC application that is called putty.exe for remote communication to a switch for network troubleshooting. Which twoprotocols could be used during this communication? (Choose two).

A. SNMPB. HTTPC. TelnetD. RMONE. SSH

Correct Answer: CESection: Routed Network Technologies

Explanation

Explanation/Reference:sophisticated answer.

QUESTION 137With IPv6, for which purpose are router solicitation and router advertisement used?

A. Routing protocol updatesB. Routing protocol neighbor peeringsC. Router and prefix discoveryD. Layer 3 to Layer 2 address resolution (similar to IPv4 ARP)

Correct Answer: CSection: IP ServicesExplanation

Explanation/Reference:answer is great.


Which two statements about these partial Cisco IOS/IOS-XE configurations are true? (Choose two.)

A. 10.1.1.2 is the inside local address.B. 192.168.1.2 is the outside local address.C. 192.168.1.2 is the outside global address.

D. This is an example of static one-to-one Network Address Translation.E. This is an example of static Port Address Translation.

Correct Answer: ADSection: IP ServicesExplanation

Explanation/Reference:well written answer.

QUESTION 139Which IPv6 feature replaced and enhanced the IPv4 ARP functions?

A. ARPv6B. DHCPv6C. Neighbor discovery protocol in ICMPv6D. Router solicitation and router advertisementE. Auto configuration

Correct Answer: CSection: IP ServicesExplanation




Which configuration is necessary to support this output?

A. interface Ethernet0ip address 192.168.3.1 255.255.255.0ip nat outside!interface Ethernet1ip address 192.168.4.1 255.255.255.0ip nat outside!interfaceSerial0ip address 172.17.38.1 255.255.255.0ip nat inside!ip nat inside source list 1 interface Serial0 overload!access-list 1 permit 192.168.3.0 0.0.0.255access-list 1 permit 192.168.4.0 0.0.0.255

B. interface Ethernet0ip address 192.168.3.1 255.255.255.0ip nat inside!interface Ethernet1ip address 192.168.4.1 255.255.255.0ip nat inside!interface Serial0ipaddress 172.17.38.1 255.255.255.0ip nat outside!ip nat inside source list 1 interface Serial0 overload!access-list 1 permit 172.17.38.0 0.0.0.255

C. interface Ethernet0ip address 192.168.3.1 255.255.255.0ip nat inside!interface Ethernet1ip address 192.168.4.1 255.255.255.0ip nat inside!interface Serial0ipaddress 172.17.38.1 255.255.255.0ip nat outside!ip nat inside source list 1 static 172.17.38.1!access-list 1 permit 192.168.3.0 0.0.0.255access-list 1 permit192.168.4.0 0.0.0.255

D. interface Ethernet0ip address 192.168.3.1 255.255.255.0ip nat inside!interface Ethernet1ip address 192.168.4.1 255.255.255.0ip nat inside!interface Serial0ipaddress 172.17.38.1 255.255.255.0ip nat outside!ip nat inside source list 1 interface Serial0 overload!access-list 1 permit 192.168.3.0 0.0.0.255access-list 1permit 192.168.4.0 0.0.0.255

Correct Answer: DSection: IP ServicesExplanation

Explanation/Reference:well explained answer.

QUESTION 141A centralized DHCP server has been setup for customer use. What command is required on the customer Switched Virtual Interface (SVI) to allow clients to receiveaddresses from this server?

A. switch(config-if)#ip helper-addressB. switch(config)#ip helper-addressC. switch(config-if)#ip dhcp-addressD. switch(config-if)#ip dhcp-gatewayE. switch(config-if)#helper-address

Correct Answer: ASection: IP ServicesExplanation

Explanation/Reference:clear answer.

QUESTION 142

Which two statements about IPv4 DHCP operations are true? (Choose two.)

A. If the DHCP clients and servers are on the same subnet, DHCP uses UDP broadcasts to communicate between the clients and servers.B. The DHCP server that receives a DHCPDISCOVER message may respond with a DHCPOFFER message on UDP port 67.C. A client can receive DHCPOFFER from multiple servers and it can accept all the offers by broadcasting the DHCPREQUEST message to all the servers.D. A DHCP relay is required if the DHCP clients and the servers are on the same subnet.E. If the client and server are on different subnets, DHCPDISCOVER and DHCPREQUEST messages are sent via UDP broadcasts, but DHCPOFFER and

DHCPACK messages are unicast.F. The client broadcasts a DHCPDISCOVER message on UDP port 68 with its own MAC address to discover available DHCP servers.

Correct Answer: AESection: IP ServicesExplanation

Explanation/Reference:answer is well written.

QUESTION 143What are three features present on both ICMPv4 and ICMPv6? (Choose three.)

A. Connectivity testsB. Address assignmentC. Information error messagingD. Address resolutionE. Mobile IPv4 supportF. Multicast group managementG. Mobile IPv6 supportH. Fragmentation needed notification

Correct Answer: ACHSection: IP ServicesExplanation

Explanation/Reference:answer is reliable.

QUESTION 144A network administrator issues the who command on a Cisco router, which takes longer than usual to display the results. Which two commands can be used to

speed up the process? (Choose two.)

A. nslookupB. no ip-domain lookupC. ip name-serverD. ipconfig /allE. ifconfig

Correct Answer: BCSection: IP ServicesExplanation

Explanation/Reference:exact answer.


Cisco 640-875 Building Cisco Service Provider Next ... · Test-King.640-875.144q Number : 640-875...

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