Free Access Huawei.H12-891_V1.0.v2022-10-03.q184 Practice Test (Page 26)

Question 121

In the city, that is, mpLS BGPVPN network, when the packet enters the public network forwarding, it will be encapsulated with two layers of MPLS tags, the following description of the two layers of tags, the error is ?

A.The egress PE uses the inner tag when determining which egress CE the message should be sent to.

B.Private network tags are carried and distributed by MP-BGP when routing, and public network tags are distributed by the LDP protocol.

C.By default, the router assigns the same tag value to all VPNv4 routes destined for the peer

D.MPLS BGPVPN uses two layers of tags: public labels (also known as outer labels) and private network labels (also known as inner labels).

Question 122

The following description of Filter-Policy is correct?( Radio).

A.With Filter-Policy, on ASBR in OSPF, type5LSA and type7LSA can be applied The build is filtered.

B.When filtering routes using the pre-slow list, the table entry ip-prefxldeny0000 0 lese-qual 32 indicates that only the default route matches

C.Prefix lists can be used to filter both routes and packets.

D.Filter-policy filters the link state information received or published, and can modify the properties of route entries.

Question 123

Both the CSNP packet of ISlS and the DD packet of OSPF have a role in the MA network, describing the role of the link state database summary, which is correct compared to the following statements of these two types of messages

A.The two packets do not need to be confirmed to the router after they are sent the master-slave relationship in the DD message interaction of

B.Both packets need to be confirmed to the terminal router after being sent, otherwise they need to be retransmitted

C.Once the adjacency relationship is established, the CSRP packet and the D message will stop sending

D.OSPF is not identity bound to dr/BDR; the CSN message is generated only by DIS

Question 124

What is the following description of LDP reliability?

A.Manually configured LDP FRR policy defaults to a 32-bit backup route that triggers LDP to establish a backup ISP

B.LGP GR (Graceful Restart) takes advantage of the high difference between the LS forwarding plane and the control plane to realize that the device forwards without interruption when the protocol is restarted or the master-standby is reversed

C.LDP and LGP linkage, the need for IGP to suppress the release of routes, to ensure that LDP and LGP paths are consistent

D.The LDP ERR can also generate an ISP for a tag map from a non-optimal next hop, and create a forwarding table entry as a backup of the primary LSP

Question 125

Is the following description of the differences between IGMP name versions correct?

A.IGMPv1/v2 cannot elect the queryer itself, while IGMPv3 can

B.For members to leave, IGMPv2/v3 can actively leave, while IGMPvl cannot

C.IGMPv1/2/v3 cannot support the SSM model

D.IGMPv1 does not support specific group queries, while IGMPv2 does

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Question 125

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