Free Huawei H31-321 Practice Test & Real Exam Questions

Exam Code/Number: H31-321
Exam Name/Title: HCNP-MSTP Transmission
Certification Provider: Huawei
Corresponding Certification: HCNP-Transmission

Exam Questions: 140
Updated On: Jun 15, 2026

Question #1

The physical cross-connect board of an OSN 3500 is N1SXCSA. Which of the following can be configured as the logical board for N1SXCSA?

A. N1SXCSA

B. N1EXCSA

C. N2SXCSA

D. N2EXCSA

E. N1UXCSA

Discussion 0

Correct Answer: A,B,E Vote an answer

Question #2

On a network where MSP rings and SNCP rings share fiber resources, if Assigned by VC-4 is selected, you need to set holdoff time for SNCP services.

A. TRUE

B. FALSE

Discussion 0

Correct Answer: B Vote an answer

Question #3

What working modes are supported by clocks of an SDH NE?

A. Synchronizing

B. Free-run

C. holdover

D. Tracing

Discussion 0

Correct Answer: B,C,D Vote an answer

Question #4

A service created using the trail function will not become a discrete service.

A. TRUE

B. FALSE

Discussion 0

Correct Answer: A Vote an answer

Question #5

Which of the following about the SSM protocol are true?

A. The SSM protocol has little to do with clock networks.

B. After the standard SSM protocol is enabled, the clock network can be bidirectional but cannot adopt a ring topology.

C. After the extended SSM protocol is enabled, the clock network can be bidirectional and adopt a ring topology, which can be intersecting or tangent with other networks.

D. After the SSM protocol is disabled, the clock network can be unidirectional but cannot adopt a ring topology.

Discussion 0

Correct Answer: B,D Vote an answer

Question #6

All NEs of a subnet are unreachable to the U2000, but the communication between the other subnets and the U2000 is normal. What are the possible causes of this phenomenon?

A. The network size is too large, and ECC communication is beyond the processing capability of the network.

B. The SCC board of the NE that is at the border of the affected subnet is faulty.

C. Failure in the U2000

D. Incorrect fiber connections or fiber faults

E. The IP address of the gateway NE is changed by mistake.

Discussion 0

Correct Answer: A,D,E Vote an answer

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