IPv6 Questions
Question 1
Refer to the exhibit.
| R1#show ipv6 route C 2001:DB8::/64 [0/0] via Ethernet0/0, directly connected L 2001:DB8::1/128 [0/0] via Ethernet0/0, receive |
Which statement is true?
A. 2001:DB8::1/128 is a local host route, and it can be redistributed into a dynamic routing protocol.
B. 2001 :DB8::1/128 is a local host route, and it cannot be redistributed into a dynamic routing protocol.
C. 2001:DB8::1/128 is a local host route that was created because ipv6 unicast-routing is not enabled on this router.
D. 2001:DB8::1/128 is a route that was put in the IPv6 routing table because one of this router’s loopback interfaces has the IPv6 address 2001:DB8::1/128.
Answer: B
Question 2
Which three actions are required when configuring NAT-PT? (Choose three)
A. Enable NAT-PT globally.
B. Specify an IPv4-to-IPv6 translation.
C. Specify an IPv6-to-IPv4 translation.
D. Specify a ::/96 prefix that will map to an IPv4 address.
E. Specify a ::/48 prefix that will map to a MAC address.
F. Specify a :.732 prefix that will map to an IPv6 address.
Answer: B C D
Question 3
Which two features does the show ipv6 snooping features command show information about? (Choose two)
A. RA guard
B. DHCP guard
C. ND inspection
D. source guard
Answer: A C
Question 4
Refer to the exhibit.
Which statement is true?
A. There is no issue with forwarding IPv6 traffic from this router.
B. IPv6 traffic can be forwarded from this router, but only on Ethernet1/0.
C. IPv6 unicast routing is not enabled on this router.
D. Some IPv6 traffic will be blackholed from this router.
Answer: D
Question 5
Refer to the exhibit.
Which part of the joined group addresses list indicates that the interface has joined the EIGRP multicast group address?
A. FF02::1
B. FF02::1:FF00:200
C. FF02::A
D. FF02::2
Answer: C
Kindly explain question 4 ???
Explanation of Q4:
If I had to guess, it’s the fact that the next-hop interface, E0, has not upstream IPv6 peers.
Question 4 shows a IS-IS Level 1 … think about it.
Hi! What does RA guard and ND inspection meen?
I don’t understand the answer to question 4 either…
Default routing is achieved in two distinct ways with Integrated IS-IS:
•Attached bit—Set by a Level 1/Level 2 router in its own Level 1 LSP and used to indicate to all Level 1 routers (within the area) that this router is a potential exit point of the area. Level 1-only routers will default to the nearest attached Level 2 router.
•Default information originate—Can be configured in Level 1 as well as Level 2. The default route (0.0.0.0/0) is inserted in the router LSP (Level 1 or Level 2, according to the configuration command) and the LSP is flooded according to the router type (Level 1 or Level 2). A Level 2 router doesn’t need to have a default route to originate a default route.
Level 1 routers will always prefer the explicit default route (0.0.0.0/0) found in an LSP before considering the attached bit.
A L1 can set a default route pointing to the L2 right? So the only thing I can think of is that there is no Link Local address out the E0/0 interface noted. I’m not sure how to get a route, that was routed to Router-C and it not have a next hop??
question 4 is critical