Free Huawei H12-821_V1.0 Exam Questions

Become Huawei Certified with updated H12-821_V1.0 exam questions and correct answers

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Total 332 Questions | Updated On: Apr 21, 2026

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Question 1

Hackers often obtain the login permissions of system administrators through various attacks. Which of the following measures can be taken to enhance the security of administrator accounts?(Select all that apply)

A : Periodically check whether unnecessary administrator accounts exist in the system. If such accounts exist, delete them to reduce the attack surface.

B : Encrypt passwords before transferring them. Whenever possible, transfer passwords by email.

C : Assign exclusive accounts for administrators with different maintenance roles to avoid account sharing.

D : To ensure security and make the password easier to remember, you can set the password to be valid for a long time.

Answer: A,C

Question 2

The BFD Echo function checks the connectivity of the forwarding link by looping back packets. Which of the following statements are true about this function?

A : If URPF is enabled on the peer end, BFD packets may be incorrectly discarded on the peer end.

B : In the BFD Echo function, the device uses the IP address of the outbound interface as the source IP address by default.

C : The BFD Echo function applies only to single-hop BFD sessions.

D : When configuring a BFD session supporting the BFD echo function, you need to configure both the local and remote discriminators.

Answer: A,B

Question 3

On an OSPF network, an algorithm is used to prevent loops within an area, but loops may occur between areas. Therefore, OSPF defines a loop prevention mechanism for inter-area routes. Which of the following statements are true about the loop prevention mechanism?

A : Inter-area routes cannot be directly transmitted between non-backbone areas.

B : All non-backbone areas must be directly connected to area 0.

C : Inter-area routes need to be forwarded through area 0.

D : An ABR cannot inject Type 3 LSAs that describe routes to a network segment in an area back to the same area.

Answer: A,B,C,D

Question 4

After HSB is configured, the HSB channel fails to be established and cannot back up information on the active device to the standby device. What are the possible causes for this HSB function failure?

A : The TCP channel is not established.

B : The retransmission count and interval for HSB service packets are different on the two devices.

C : The two ACs have the same priority.

D : The source IP address and port number of the local end are different from the destination IP address and port number of the remote end.

Answer: A,B,D

Question 5

IP multicast effectively conserves network bandwidth and reduces network load. Therefore, it is widely used in network services, such as IPTV, real-time data transmission, and multimedia conferencing.

A : TRUE

B : FALSE

Answer: A

Page: 1 / 67

Total 332 Questions | Updated On: Apr 21, 2026

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