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Total 172 questions
Refer to the exhibit. Routers RA and RB are IS-IS peers configured for NSF, but router RC is an IS-IS peer without NSF capability. If RA undergoes processor switchover, what is the effect on the network environment?
- A. If RC is operating without the Cisco configuration option, only 2 routers tear down their peering relationships and re-establish peering
- B. All peer relationships remain up, but the link-state database is rebuilt on each device
- C. If RC is operating without the Cisco configuration option, all three routers tear down their peering relationships and re-establish peering
- D. All peer relationships remain up and the link-state database is unchanged
Answer : B
Refer to the exhibit. An engineer working for a private telecommunication company with an employee id: 1234:09:567 implemented this configuration on Router1, what is the effect of it?
- A. Router 1 receives only one best path from neighbor 192.168.1.1
- B. Router 1 sends only one best path to neighbor 192.168.1.1
- C. Router 1 sends up to three paths to neighbor 192.168.1.1 for all routes
- D. Router 1 sends and receives multiple best paths from neighbor 192.168.1.1
Answer : D
Refer to the exhibit. While configuring router 2 with all the default values, a network engineer cannot see any route received in router 1. How should the engineer solve the issue?
- A. Modify the IP address or mask of the interface to a valid one
- B. Set up a priority different than 0 in the interface
- C. Modify the router ID to be the interface IP on the serial
- D. Set the network type in S1/0 to point-to-point
Answer : A
After an engineer configures BGP in R1, it starts receiving this message:
Which action makes the peering come back up again?
- A. Make a soft reset to the peer
- B. Set up a hello timer higher
- C. Set up a hold-down timer higher
- D. Set up a minimum hold-down timer higher
Answer : D
Refer to the exhibit. An administrator is troubleshooting Internet access issues on a customer’s network. After applying this ISIS configuration to R1, the administrator notices that it fails to redistribute the default route into IS-IS. After checking the connectivity between the ISIS router and the ISP router the engineer confirmed there is Layer 3 connectivity between them. Which action should be taken to correct the problem?
- A. Configure R1 as a Layer 1 router
- B. Add the default-information originate command to the configuration
- C. Configure the default route under any routing protocol other than IS-IS
- D. Associate the default route with a VRF
Answer : B
Refer to the exhibit. A network engineer applied configuration on R5 to summarize all OSPF routes, but R4 is still receiving specific routes from R5. The engineer has confirmed that both R5 and R4 routers are configured with correct summarization configuration, but R5 is not sending the summary routes. What action must the engineer take to fix the problem?
- A. Remove summarization configuration on R5 and configure it on R4
- B. Clear link-state database on both R4 and R5 routers for summarization to work
- C. Configure a sham link between R4 and R5 to support summarization within Area 2
- D. Move R4 and R5 in separate areas as now they maintain the same link-state database
Answer : D
Refer to the exhibit. Routers within the cluster are not receiving the desired prefixes. What must be done to fix the issue?
- A. Clients in that cluster must have full mesh connectivity between eBGP peers
- B. No client-to-client reflection must be enabled
- C. Clients in that cluster must have full mesh connectivity between iBGP peers
- D. No client-to-client must be disabled
Answer : C
Refer to the exhibit. An engineer applied the summarization configuration on R1 for four networks (192.168.20.0/24 to 192.168.23.0/24) in area 1 and eight networks (192.168.32.0/24 to 192.168.39.0/24) in area 2 to stop the flooding of all the customer routes. While checking the routing table of R2, the engineer noticed that R1 is still sending only specific routes to R2. Which configuration should the engineer apply on R1 to summarize routes?
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A.
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B.
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C.
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D.
Answer : D
Refer to the exhibit. While applying the configurations on two routers, an engineer notices that OSPF adjacency between them remains down. Through the ping test, the engineer confirmed that both the routers have Layer 3 reachability between them. Which action should the engineer take to make the adjacencies to full?
- A. Enable OSPF just inside the router OSPF process, not in the interfaces of any router
- B. Delete the area 0 authentication message-digest command from the OSPF process in R1
- C. Enter the command ip ospf authentication in R2 interface
- D. Delete the area 0 authentication message-digest command from the OSPF process in R2
Answer : C
What are three requirements for a static IPv6-in-IPv4 tunnel? (Choose three.)
- A. A dynamic IPv6 address must be configured
- B. A dynamic IPv4 address must be configured
- C. A static IPv4 address must be configured
- D. A static IPv6 address must be configured
- E. Each tunnel endpoint must support IPv4 and IPv6
- F. Cisco Express Forwarding must be enabled
Answer : BDE
What are two differences between OSPF and IS-IS? (Choose two.)
- A. Unlike IS-IS routers, an OSPF router belongs to only one area in addition to the backbone area
- B. OSPF uses a router ID to identify a router, and IS-IS uses a system ID
- C. OSPF is a link-state routing protocol, and IS-IS is a distance-vector routing protocol
- D. Unlike OSPF, IS-IS supports virtual links
- E. OSPF elects a DR and BDR, and IS-IS elects a DIS
Answer : BE
Refer to the exhibit. Router1 and Router2 have shared routes in the OSPF database, but the routes are missing from their routing tables. Checking the prefix-list configuration on both routers, the engineer confirmed all networks are allowed. What action should the engineer take to fix the problem?
- A. Configure interface Serial1/0 on Router1 as a point-to-point interface
- B. Configure the two routers with different process IDs
- C. Switch the DR and BDR roles between the two routers
- D. Configure the two routers with different hello and dead timer values
Answer : A
Refer to the exhibits. All links inside the network are configured at a default cost of one inside the fully converged OSPF domain. Given the configuration from XR1, which interface does traffic from XR1 that is destined to the loopback interface of XR6 select for the exiting interface?
- A. Interface GigabitEthernet 0/0. The tie breaker of the path cost being lower. The node index priority does not impact this selection process.
- B. Interface GigabitEthernet 0/1. The tie breaker of the path cost being lower. The node index priority does not impact this selection process.
- C. Interface GigabitEthernet 0/0. The tie breaker of the node index priority is lower and trumps the path cost.
- D. Interface GigabitEthernet 0/1. The tie breaker of the node index priority is lower and trumps the path cost.
Answer : C
What is the purpose of a BGP confederation?
- A. It reduces the number of iBGP peers and increases stability
- B. It improves service by increasing the number of simultaneous iBGP peering sessions
- C. It redirects traffic away from route reflectors, which reduces their operating load
- D. It limits the number of routes a device receives from its peers, which reduces CPU load
Answer : A
Refer to the exhibit. A network operator is configuring BGP PIC on CE1 on already established neighborships with PE1 and PE2 inside the fully converged MPLS network. Which element needs to be implemented to make this feature function effectively?
- A. Bidirectional Forwarding Detection must be applied to the upstream facing BGP interfaces
- B. The operator must ensure that all prefixes have the same next-hop from PE1 and PE2 for BGP PIC
- C. A reserved BGP community of 1:10 must be used to denote the PIC feature set to the routing protocol
- D. BGP import/export policies must be applied on all devices for the routes needing BGP for PIC
Answer : A