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Huawei H12-821_V1.0-ENU Exam Syllabus Topics:

Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions:

1. In RSTP, many optional protection functions are set to prevent the Layer 2 network from being invaded by malicious users.
So which of the following descriptions about TC-BPDU functions are correct? (Multiple choice)

A) After this function is enabled, for other TC BPDU packets that exceed the threshold, the device only processes them once after the timer expires
B) The anti-TC-BPDU attack function can be configured and enabled on all interfaces
C) By default, the maximum number of topology change packets processed by the device within a specified time is 2
D) By default, the time required for the device to process the maximum number of topology change packets is Hello Time

2. Telemetry is mainly used to monitor the network, including packet inspection and analysis, security intrusion and attack detection, intelligent data collection, application performance management, etc.
Which of the following descriptions about Telemetry is wrong?

A) Support multiple implementation methods to meet the different needs of users
B) It can quickly locate the fault, reaching the fault location speed of second level or even sub-second level
C) The accuracy of data collection is high, and the types of items are very rich, fully reflecting the network status
D) The number of managed devices is small, but the accuracy is high, suitable for small and medium-sized networks

3. Which of the following descriptions about OSPF is correct?

A) Only LS Update and LS Request messages carry complete LSA information
B) The destination address of the Hello packet is 224.0.0.5 and 224.0.0.6
C) The DD message does not necessarily carry link state summary information. At this time, the DD message can be used to negotiate the master-slave relationship
D) After the ospf mtu-enable command, OSPF will check the MTU length in the LSU, if it is inconsistent with the MTU length in the message sent by itself, the device will remain in the Exchange state

4. Regarding the information description of OSPF's ASBR Summary-LSA, which of the following is wrong?

A) Metric indicates the OSPF cost from the ABR to the ASBR
B) The Advertising Router field in the ASBR-Summary-LSA is the same for all areas
C) Advertising Router indicates the Router ID of the ABR
D) Link State ID indicates the Router ID of ASBR

5. In PIM, which of the following descriptions about DR is correct? (Multiple choice)

A) On the shared network segment of the connection group members, the DR is responsible for sending a Register message to the RP. The DR connected to the group members is called the group member-side DR.
B) PIM routers become PIM neighbors by exchanging Hello messages. The Hello messages carry the DR priority and the interface address of the network segment.
C) If the current DR fails, the PIM neighbor relationship will time out, and a new round of DR election will be triggered between other PIM neighbors.
D) On the shared network segment connected to the multicast source, the DR is responsible for sending Join registration messages to the RP. The DR connected to the multicast source is called the source DR.

Solutions: