Huawei H12-261_V3.0-ENU 問題集

質問 1：
Which of the following description about OSPFv3 message is correct? (Multiple choice)
A. The LSR message contains the complete LSA header information for requesting to update the LSA
B. The Hello message must contain the interface ID of the sending interface
C. The Option field of Hello messages and DD messages is extended to 24 bits
D. LSACK message contains LSA header information to confirm receipt of LsU messages
正解：B,C,D

質問 2：
Which of the following statement about the LSA of OSPFv3 3 is correct? (Multiple choice)
A. When the Intra-Area Prefix LSA has the Referenced Link State Type-2, the Referenced Link State id contains the interface id of the DR.
B. Router-LSA and Network-LSA do not contain routing information.
C. The Link State id of the Inter-Area Prefix-LSA contains the prefix information.
D. Inter-Area-Prefix LSA also contains Link-Local information
正解：A,B

質問 3：
The configuration of two routers in a company is as follows. which of the following statement about the R1 routing table is correct?

A. If the priority of the R1 ISIS protocol is adjusted to 5, the P route entry with the destination network segment of 10.0.2.2/32 on R1 is generated by ISIS.
B. If the priority of the R2 ISIS protocol is adjusted to 5, the P route entry with the destination network segment of 10.0.2.2/32 on R1 is generated by ISIS.
C. If the priority of the ISIS protocol of R1 is adjusted to 5, the P route entry of the destination network segment with the destination network segment of 10.1.2.2/32 is generated by OSPF.
D. Only when the priority of the R2 ISIS protocol is adjusted to 5, the P route entry with the destination network segment of 10.1.2.2/32 on R1 is generated by OSPF.
正解：A

質問 4：
Regarding the characteristics of CE dual-homing, which of the following statement is incorrect?
A. In CE dual-homing networking, loops may occur, and route-tags can be used to solve loop problems.
B. CE accesses the backbone network through two links. These two links can be used for load sharing or as active and standby links.
C. The VRFs of two PEs connected to the same CE can belong to different VPNs.
D. CE and PE form a CE dual-homing network, which can ensure high network availability.
正解：C

質問 5：
Which of the following parameters are modified, and then the IS-IS neighbor relationship needs to be re-established? (Multiple choice)
A. Modify the cost value of the IS-IS interface
B. Modify the IH transmission interval of the IS-IS interface
C. Modify the level of the IS-IS interface
D. Modify the IP address of the IS-IS interface
正解：C,D

質問 6：
Regarding the processing mode of MPLS for TTL, which description is correct?
A. In MPLS VPN, if you want to hide the structure of the MPLS backbone network, you can use the uniform mode for Ingress packets for private network packets.
B. Uniform simulation, when the IP packet passes through the MPLS network, the IP TTL of the ingress node is decremented by 1, and the MPLS TTL field is a fixed value.
C. The TTL of the MPLS label has the same meaning as the TTL in the IP header, which can prevent the MPLS network from generating a routing loop
D. In Pipe mode, when an IP packet passes through the MPLS network, the IP TTL is decremented by 1 to the MPLS TTL field on the ingress node.
正解：C

質問 7：
In a shared network, what mechanism does PIM-SM use to prevent duplicate traffic?
A. Assert mechanism
B. Register mechanism
C. BSR/RP mechanism
D. Join/Prune mechanism
正解：A

質問 8：
Which of the following about the RD attribute filter of BGP is correct? (Multiple Choice)
A. The relationship between the rules configured by RD-filter is "or".
B. If RD-filter is configured, but the RD of the route does not match any of the RDs defined in the rule, the default match result is Permit.
C. Match multiple rules in the order of configuration
D. If RD-filter is not configured, but this RD-filter is used for filtering, the matching result is deny.
正解：A,C