RIPng

Question 1

What are the default timers for RIPng?

A. Update:30 seconds Expire:180 seconds Flush:240 seconds
B. Update:20 seconds Expire:120 seconds Flush:160 seconds
C. Update:10 seconds Expire:60 seconds Flush:80 seconds
D. Update:5 seconds Expire:30 seconds Flush:40 seconds

Answer: A

Explanation

The default timers of RIP and RIPng are the same. The meanings of these timers are described below:

Update: how often the router sends update. Default update timer is 30 seconds
Invalid (also called Expire): how much time must expire before a route becomes invalid since seeing a valid update; and place the route into holddown. Default invalid timer is 180 seconds
Holddown: if RIP receives an update with a hop count (metric) higher than the hop count recording in the routing table, RIP does not “believe in” that update. Default holddown timer is 180 seconds
Flush: how much time since the last valid update, until RIP deletes that route in its routing table. Default Flush timer is 240 seconds

Question 2

What is the command to only check neighbor router using RIPng?

A. show ipv6 rip one next-hops
B. show ipv6 rip next-hops one
C. show ipv6 next-hops rip
D. show ipv6 next-hops one rip

Answer: A

Question 3

A network engineer is troubleshooting connectivity issues with a directly connected RIPng neighbor. Which command should show directly connected RIPng neighbor adjacencies only?

A. router#show ipv6 rip next-hops
B. router#show ip rip neighbors
C. router#show ipv6 routers
D. router#show ipv6 rip database

Answer: A

Question 4

Which IPv6 address type does RIPng use for next-hop addresses?

A. Global
B. Site-local
C. Any Cast
D. Link-local
E. Multicast

Answer: D

Question 5

RIPng Question. Cannot receive RIPng updates. Why?

A. Firewall Port block UDP 520
B. Firewall Port block TCP 520
C. Firewall Port block UDP 521
D. Firewall Port block TCP 521

Answer: C

Question 6

A network engineer is disabling split horizon on a point-to-multipoint interface that is running RIPng. Under which configuration mode can split horizon be disabled?

A. router(config-riping)#
B. router(config-rtr)#
C. router(config-if)#
D. router(config)#

Answer: B

Explanation

This is how to disable split horizon processing for the IPv6 RIP routing process named digitaltut:

Router(config)# ipv6 router rip digitaltut
Router(config-rtr)#no split-horizon

Note: For RIP (IPv4), we have to disable/enable split horizon in interface mode. For example: Router(config-if)# ip split-horizon

Reference: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipv6/command/ipv6-cr-book/ipv6-s6.html

Question 7

A network engineer is modifying RIPng timer configuration. Which configuration mode should the engineer use?

A. router(config)#
B. router(config-if)#
C. router(config-router)#
D. router(config-rtr)#

Answer: D

Explanation

This is how to change the timers for RIPng:

R1(config)#ipv6 router rip digitaltut
R1(config-rtr)#timers 5 15 10 30 (5: Update period; 15: Route timeout period; 10: Route holddown period; 30: Route garbage collection period)

Note: For IPv4 RIP, we have to change the timers in “(config-router)#”.