Free Access Huawei.H12-891_V1.0.v2025-08-12.q170 Practice Test (Page 3)

Question 6

There is an existing router running OSPF HWL, HW1 interface serial0 is published in zone 1, configure commands under the OSPF process nssa default-route-advertise, based on the previous description, infers which of the following options are correct?

A.HW1 injects a type 7 default route into zone 1

B.When HW1 injects a default route into Zone 1, HW1's local route table can not contain a single default route

C.HW1 injects a Type 3 default route into Zone 1

D.HW1 injects a Type 7 default route into Zone 0

E.When HW1 injects a default route into zone 1, HW1's local route table needs to answer the default route

Question 7

Regarding the domain-authentication-mode md5 hello command in the ISIS process, the correct explanation is
?

A.This command is mainly used to make is the ISIS Hello message carry authentication information during the transmission process.

B.ISIS authentication cannot be applied in IPv6 environments.

C.All router domain authentication methods of the same routing domain are MD5, the password is hello, and lS-IS SNP and LSP will spread normally.

D.outing domain authentication is primarily used to allow level-1 and Level-2 SNP and LSP messages to carry authentication information during delivery.

Question 8

The following statement about the VPNv4 address is wrongly described as ?

A.By default, PE does not perform VPN-target filtering on received VPNv4 routes.

B.Carries the RD attribute when BGP publishes both reachable and unreachable VPNv4 routes.

C.Local PE sets up An Export Target for these routes before releasing VPNv4 routes learned from sites that are directly connected to them to other PEEs attributes, and are published with routes as extended community attributes for BGP.

D.The VPNv4 address has a total of 12 bytes, including an 8-byte route identifier RD (Route Distingulisher) and a 4-byte IPv4 Address prefix.

Question 9

The data results of a router are as follows, and the analysis conclusion is correct (single choice).

A.The R3 router's Eth0/0/1 enables both IPv4 and IPv6 ISIS

B.R3 routers Circuit-level is Level-1-2

C.R3 is on the link where Eth0/0/0 is Eth0/ 1 of the LEVEL-1 and Level-2 DISC

D.The GEO/0/0 port of the R3 is in a different region than the neighbor

Question 10

In DU label advertisement mode, if the liberal label retention mode is used, the device reserves labels received from all the LDP peers regardless of whether the LDP peer is the optimal next hop for reaching the destination network.

A.TRUE

B.FALSE

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