CCIE Routing and Switching FAQ: RIPv2 and RIPng

CCIE Routing and Switching FAQ: RIPv2 and RIPng

Q1. Which of the following items are true of RIP version 2?
A. Supports VLSM
B. Sends Hellos to 224.0.0.9
C. Allows for route tagging
D. Defines infinity as 255 hops
E. Authentication allows the use of 3DES

Answer: A, B, and C

Q2. In an internetwork that solely uses RIPv2, after the network is stable and converged, which of the following is true?
A. Routers send updates every 30 seconds.

B. Routers send updates every 90 seconds.

C. Routers send Hellos every 10 seconds, and send updates only when routes change.

D. A routing update sent out a router’s Fa0/0 interface includes all RIPv2 routes in the IP routing table.

E. A RIPv2 update’s routes list the same metric as is shown in that router’s IP routing table.

Answer: A

Q3. R1 previously had heard about only one route to 10.1.1.0/24, metric 3, through an update received on its S0/0 interface, so it put that route in its routing table. R1 gets an update from that same neighboring router, but the same route now has metric 16. R1 immediately sends a RIP update out all its interfaces that advertises a metric 16 route for that same subnet. Which of the following are true for this scenario?
A. Split Horizon must have been disabled on R1’s S0/0 interface.
B. R1’s update is a triggered update.
C. R1’s metric 16 route advertisement is an example of a route poisoning.
D. The incoming metric 16 route was the result of a counting-to-infinity problem.

Answer: B and C

Q4. R1 is in a network that uses RIPv2 exclusively, and RIP has learned dozens of subnets through several neighbors. Which of the following commands displays the current value of at least one route’s age?
A. show ip route
B. show ip rip database
C. debug ip rip
D. debug ip rip event

Answer: A

Q5. R1 is in a network that uses RIPv2 exclusively, and RIP has learned dozens of subnets through several neighbors. From privileged EXEC mode, the network engineer types in the command clear ip route * . What happens?
A. R1 removes all routes from its IP routing table and tries to repopulate it.

B. R1 removes only RIP routes from its IP routing table.

C. After the command, R1 will relearn its routes when the neighboring router’s Update timers cause them to send their next updates.

D. R1 immediately sends updates on all interfaces, poisoning all routes, so that all neighbors immediately send triggered updates—which allow R1 to immediately relearn its routes.

E. R1 will relearn its routes immediately by sending RIP requests out all its RIPenabled nonpassive interfaces.

F. None of the other answers is correct.

Answer: A and E

Q6. R1 has been configured for RIPv2 using only version 2 ,network statements and no auto-summary . The configuration includes a network 10.0.0.0 command. Which of the following statements are true about R1’s RIP behavior?
A. R1 will send advertisements out any of its nonpassive interfaces in network 10.0.0.0.

B. R1 will process received advertisements in any of its interfaces in network 10.0.0.0, including passive interfaces.

C. R1 will send updates only after receiving a RIP Hello message from a neighboring router.

D. R1 can disable the sending of routing updates on an interface using the passive interface interface subcommand.

E. R1 will advertise the subnets of any of its interfaces connected to subnets of network 10.0.0.0.

Answer: A, B, D, and E

Q7. Which of the following represents a default setting for the Cisco IOS implementation of RIPv2?
A. Split Horizon is enabled on all types of interfaces.

B. Split Horizon is disabled on Frame Relay physical interfaces and multipoint subinterfaces.

C. The default authentication mode, normally set with the ip rip authentication mode interface subcommand, is MD5 authentication.

D. RIP will send triggered updates when a route changes

Answer: B and D

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