[2026] Huawei HCIP-Datacom-Core Technology V1.0 - H12-821

문제1

ASBRs cannot exist in an OSPF stub area.

A. FALSE

B. TRUE

정답: B

설명: (Fast2test 회원만 볼 수 있음)

문제2

On an enterprise WLAN where Portal authentication is deployed, an AC functions as an access device and communicates with a Portal server using the Portal protocol. Which of the following statements are true about the Portal protocol?

A. By default, the access device processes Portal protocol packets through port 2000.

B. Portal protocol packets are transmitted over TCP.

C. The HTTP or HTTPS protocol can be used as the Portal access or authentication protocol.

D. By default, the device uses the destination port number 50100 to proactively send packets to the Portal server.

정답: B,C

설명: (Fast2test 회원만 볼 수 있음)

문제3

According to BGP route selection rules, the route with the higher Local_Pref is preferred.

A. FALSE

B. TRUE

정답: B

설명: (Fast2test 회원만 볼 수 있음)

문제4

Which of the following attributes must be carried when BGP sends route update messages?

A. Next_Hop

B. AS_Path

C. Local_Preference

D. MED

정답: A,B

설명: (Fast2test 회원만 볼 수 있음)

문제5

Which of the following statements about WLAN roaming are false?

A. APs with which a STA is associated before and after roaming must work on the same channel.

B. APs with which a STA is associated before and after roaming can work on different channels.

C. During roaming, the STA sends an Association Request frame containing home AP information to the foreign AP.

D. During roaming, the STA sends a Reassociation Request frame containing home AP information to the foreign AP.

정답: A,C

설명: (Fast2test 회원만 볼 수 있음)

문제6

BGP confederations are widely used because they can reduce the number of IBGP connections in an AS.
Which of the following statements is false about confederations?

A. After a confederation is configured, the original IBGP attributes can be retained.

B. After a confederation is configured, the original AS number is used as the confederation ID of each router.

C. The ASs outside a confederation still consider the confederation as one AS.

D. A confederation divides an AS into several sub-ASs, and EBGP full-mesh connections are established in each sub-AS.

정답: D

설명: (Fast2test 회원만 볼 수 있음)

문제7

Which of the following statements regarding OSPF route summarization is false?

A. Any router in OSPF can summarize routes.

B. OSPF supports two route summarization modes: ABR summarization and ASBR summarization.

C. Route summarization can reduce routing information, decrease the routing table size, and improve router performance.

D. Route summarization is the process of summarizing routes with the same prefix into one route and then advertising only the summarized route to other areas.

정답: A

설명: (Fast2test 회원만 볼 수 있음)

문제8

Which of the following configurations are not mandatory when an administrator configures VRRP?

A. Preemption delay

B. Virtual IP address

C. Preemption mode

D. Virtual router priority

정답: A,C

설명: (Fast2test 회원만 볼 수 있음)

문제9

Which of the following statements regarding multicast MAC addresses are false?

A. The high 24 bits of the multicast MAC address are 0x01005E, the 25th bit is fixed to 1, and the lower
23 bits of the MAC address map to the lower 23 bits of the multicast IP address.

B. One multicast MAC address maps to only one multicast IP address.

C. One multicast MAC address maps to 32 multicast IP addresses.

D. A multicast MAC address identifies receivers of a multicast group on the data link layer.

정답: B

설명: (Fast2test 회원만 볼 수 있음)

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