Huawei H12-261 問題集

質問 1：
Which of the following statements regarding route-policies are true?
A. An advanced ACL can be used in a route-policy to filter routes
B. A route-policy can filter only default routes
C. If the entry permit :: 0 less-equal 128 is defined, all IPv6 routes are permitted
D. If more than one node is defined in a route-policy, the matching mode of at least one node must be permit
正解：D

質問 2：
Which of the following statements regarding VXLAN packets are true?
A. The source UDP port number is 4789.
B. The destination UDP port number is 4789.
C. The outer destination IP address is the IP address of the remote VTEP in a VXLAN tunnel.
D. A VNI has 24 bits and is used to identify a VXLAN segment.
正解：B,D

質問 3：
In the Hub-Spoke networking of MPLS BGP VPN shown in the figure below, users want to configure branches to communicate only with the headquarters but no other branches. To achieve this, which of the following solutions regarding RT settings can be used?

A. Headquarters: Import Target: 1:1; Export Target: 3:3Branch 1: Import Target: 3:3; Export Target:
1:1Branch 2: Import Target: 3:3; Export Target: 2:2
B. Headquarters: Import Target: 2:2; Export Target: 3:3Branch 1: Import Target: 3:3; Export Target:
1:1Branch 2: Import Target: 3:3; Export Target: 2:2
C. Headquarters: Import Target: 12:3; Export Target: 3:12Branch 1: Import Target: 3:12; Export Target:
12:3Branch 2: Import Target: 3:12; Export Target: 12:3
D. Headquarters: Import Target: 12:3; Export Target: 12:3Branch 1: Import Target: 12:3; Export Target:
12:3Branch 2: Import Target: 12:3; Export Target: 12:3
正解：C

質問 4：
An AS-path-filter uses the regular expression ^[0-9]+$ to indicate all as-path attributes.
A. FALSE
B. TRUE
正解：A

質問 5：
A router is connected to two EBGP peers through two parallel serial cables. What method can be used to achieve bidirectional load balancing between the EBGP peers?
A. Run the ebgp-load-balance command on the EBGP peers.
B. No method is needed. BGP automatically implements load balancing among different Ass through available links.
C. Establish an EBGP peer relationship through loopback interfaces, and configure the loopback interfaces as update sources. In each AS, import two equal-cost routes to the loopback interface of each EBGP peer to the IGP process. In addition, run the ebgp-max-hop and next-hop-local commands.
D. Configure an EBGP peer relationship through loopback interfaces, and configure the loopback interfaces as update sources. In each AS, enable two equal-cost routes to the loopback interface on each EBGP peer in the IGP process. In addition, run the next-hop-local command.
正解：C

質問 6：
Synchronization between LDP and IGP suppresses reachable IGP route advertisement to implement network convergence and ensure LDP and IGP are along the same path. This minimizes traffic loss and improves network reliability.
A. FALSE
B. TRUE
正解：B

質問 7：
NSR (Non-Stopping-Forwarding) NSR Non-Stopping Routing and non-stop routing (is two solutions for high reliability) The following is correct in the case, saying
A. The NSR NSR router needs to communicate with the specific vendor support
B. NSF NSF routers do not need to communicate with specific vendors.
C. After NSR, , , NR is enabled, if the batch is not yet bundled, the main control board fails and cannot be completed.
D. After the switch is turned on, the router is backed up by NSF GR, and the routing table and table are kept unchanged. Therefore, the internal traffic does not lose time.
正解：C,D

質問 8：
IS-IS elects a DIS on a broadcast network. Which of the following statements regarding
A. On a broadcast network, the DIS sends Hello PDUs at a frequency that is three times the frequency of non-DIS routers.
B. DIS preemption is supported. After successful DIS preemption, LSPs do not need to be flooded.
C. The DIS periodically sends CSNPs to ensure LSDB synchronization.
D. ISIS elects the DIS by comparing preferences. If the preferences are the same, ISIS compares MAC addresses.
正解：A,B,C,D