H12-891 Certification Exam Questions with AI Explanations

QUESTION: 116

Compared to IPV4 multicast, which of the following descriptions is the characteristic of IP6 multicast?

IPv6 multicast does not contain MSDP and dense mode
The first 8bit IPV6 multicast address is always FF(11111111).
IPv6 multicast clients use IGMPv3 to join multicast groups
IPv6 multicast load sharing extends the multicast routing rules and is completely independent of RPF check

Answer(s): B

OSPFV is the GP running on the P4 network) OSPF3 is the KGP running on the IP6 network. OsPFV works the same basic way as OSPF2, such as elections for DR and BDR. As shown in the figure, an engineer uses three routers for IP6 service testing, and he wants to interconnect the IPv6 network by running OSPFv3 Which of the following statements is
correct regarding the election of the network DR?

After the network converges, R1 is DR
After the network converges, the engineer modifies the priority of R1 to 100, the priority of R2 to 10, and R3 to the default value. When the network converges again, Rl is DR and R2 is BDR
After the network converges, the broadcast link adds a device, R4, with a priority of 150 When the network converges again, R4 is DR
After the network converges, R1 is powered off and restarted, and when the network converges again, R3 is DR

Answer(s): B,C,D

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QUESTION: 118

The following description of BGP ring protection is correct

The BGP router does not announce any updates from the EBGP peer to other EBGP peers
BGP routers that are not RR do not announce any updates from the IBGP peer to other IBGP peers
Any routing information from the IBGP peer is advertised to the other IBGP peers
through the AS-path attribute, discard any update information received from the EBGP peer that contains its own AS number in the AS-path attribute

Answer(s): B,D

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QUESTION: 119

ICMPv6 has two types: Error Messages and Information Messages.

TRUE
FALSE

Answer(s): A

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QUESTION: 120

The correct description about the prefix list is:

The prefix list is used to filter P prefixes and can match both prefix numbers and prefix lengths
The prefix list is used to filter IP prefixes, and cannot match both the prefix number and the prefix length
The prefix list cannot be used for packet filtering
The prefix list can be used to filter packets

Answer(s): A,C

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