Free Access Huawei.H12-891_V1.0.v2022-07-04.q121 Practice Test (Page 5)

Question 16

The following description of 8021S deployment characteristics is correct?( Multiple choice question)

A.Multiple VLANs share a spanning tree instance

B.Multiple bridges share a spanning tree instance

C.Each VLAN has one spanning tree instance

D.All VLANs share a spanning tree instance

Question 17

Regarding the MPLS handling mode of TTL, the following description is correct?

A.In MMLSVPI, if you need to hide the structure of the MPLS backbone network, you can use the Uniform mode on Ingress for private network messages

B.In Unifor mode, when an IP message passes through an MPLS network, the inbound IPTTL is minus 1.
The MPLSTTL field is a fixed value

C.Pipe mode. When an IP message passes through an MPLS network, the IPTTL minus l at the entry point is mapped to the MPLS TTL field

D.MPLS tags in the TTL, which mean the same as the TTL domain in the IP header. TTL prevents mpLS networks from creating routing loops

Question 18

What of the following actions can enable fast failure detection on multicast networks?

A.Reduce the interval between sending Join/Prune messages

B.A PIM BFD session is established between neighbors

C.Shorten the Holdtime of Join/Prune messages

D.Reduce the interval at which the interface sends Hello messages

Question 19

There can be multiple nodes under a route -policy, different node numbers are identified by nodes, and each node can have multiple if-match and apply clauses, which of the following descriptions are wrong ?

A.The relationship between different nodes is an "and" relationship

B.The relationship between the if-match clauses under each node is "and"

C.There is an "or" relationship between different nodes

D.The relationship between the if-match clauses under each node is "or"

Question 20

Which field in the IPv6 basic header has a similar effect to which field in the IPv4 header does?

A.Flags

B.Ldentification

C.Time to Live

D.Protocol

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Question 16

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Question 18

Question 19

Question 20

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