最新HCIP-Datacom H12-821_V1.0考試題庫，Huawei H12-821

問題1
Which of the following statements about stack split is false?

A. After a stack splits, the MAC addresses of the two stacks change immediately.

B. If the master and standby switches are still in the same stack after the stack splits, the slave switches separated from the original master and standby switches re-elect the master and standby switches due to protocol packet timeout.

C. If the master and standby switches are in two stacks after the split, the stack where the original master switch resides updates the topology and selects a new standby switch. The original standby switch becomes the master switch in the new stack and a new standby switch is elected.

D. After a stack splits, multiple stacks have the same IP address and MAC address. To prevent network faults, the stacks perform MAD detection. The stack that fails the MAD detection shuts down all physical ports except reserved ports.

正確答案: A

說明：（僅 NewDumps 成員可見）

問題2
Which Of the following IEEE 802.11 standards is also known as Wi-Fi 6?

A. 802.11ax

B. 802.11b

C. 802.11ac

D. 802.11n

正確答案: A

說明：（僅 NewDumps 成員可見）

問題3
An enterprise network runs OSPF to implement network communication. Which of the following types of LSAs may be generated by an ABR?

A. ASBR Summary LSA

B. AS External LSA

C. NSSA LSA

D. Network Summary LSA

正確答案: A,C,D

說明：（僅 NewDumps 成員可見）

問題4
Which of the following statements regarding OSPF multi-instance is false?

A. Route exchange between different OSPF processes is similar to route exchange between different routing protocols.

B. The OSPF process IDs must be the same when OSPF neighbor relationships are established between different routers.

C. Multiple OSPF processes can run on the same router, and they are independent of each other.

D. An interface of a router belongs to only a certain OSPF process.

正確答案: B

說明：（僅 NewDumps 成員可見）

問題5
In PIM-DM, which of the following processes are involved in SPT establishment?

A. Graft

B. Flooding

C. Prune

D. State-refresh

正確答案: A,B,C

說明：（僅 NewDumps 成員可見）

問題6
A large number of external routes are imported to an NSSA of an enterprise ' s OSPF network. The customer requires that the number of LSAs in non-special areas be reduced. To meet this requirement, route summarization can be configured on an ABR in the NSSA to summarize the routes corresponding to the Type
5 LSAs translated from Type 7 LSAs.

A. FALSE

B. TRUE

正確答案: B

問題7
Without a prior version check, an engineer configures IGMP snooping on a device and the version of IGMP snooping is earlier than the IGMP versions on user hosts. In this case, which of the following situations will occur?

A. Users cannot receive multicast data because the device forwards received IGMP Report messages only to router ports and does not generate group member ports or forwarding entries.

B. Users cannot receive multicast data, but the device generates forwarding entries after receiving IGMP Report messages.

C. The IGMP versions of the hosts are automatically upgraded, and users can receive multicast data properly.

D. The IGMP snooping version of the device is automatically degraded, and users can receive multicast data properly.

正確答案: A

說明：（僅 NewDumps 成員可見）

問題8
OSPF has multiple types of routes with varying priorities. Which of the following types of routes has the lowest priority when they have the same prefix?

A. Intra-area route

B. Type 1 external route

C. Type 2 external route

D. Inter-area route

正確答案: C

說明：（僅 NewDumps 成員可見）

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