Huawei Huawei Certifications H31-321 Questions & Answers

• Question 91:

  Which of the following operations are required for monthly basic maintenance on the U2000?

  A. Checking for the time of the U2000 server

  B. Backing up system files

  C. Changing the password for a current user

  D. Checking operating system logs

  Correct Answer: ABC

• Question 92:

  When the NEs of a Huawei network are connected to third-party/external equipment you can create virtual NEs that are mapped to the third-party/externa I equipment and then create cross-subnet trails between Huawei NEs and virtual NEs. In this manner, discrete services can be prevented.

  A. TRUE

  B. FALSE

  Correct Answer: A

• Question 93:

  If a network carries Ethernet over SDH (EoS) services, you need to verify availability of EoS service channels during system commissioning. What verification methods are available?

  A. Ping command

  B. ETH OAM test

  C. PRBS test

  D. Test based on the board IP address

  Correct Answer: ABD

• Question 94:

  What is the maximum number of NEs traversed by a data forwarding path in Huawei ECC communication?

  A. 16

  B. 32

  C. 63

  D. 128

  Correct Answer: C

• Question 95:

  According to the extended SSM protocol, clock switching is performed firstly according to clock priorities, and secondly according to clock quality levels.

  A. TRUE

  B. FALSE

  Correct Answer: B

• Question 96:

  When commissioning OptiX OSN 3500 equipment, decide whether optical attenuators are needed. If the optical power is too high, user an attenuator to reduce optical power and to prevent damage to an optical port. Generally, for which port of an optical module is an optical attenuator used?

  A. IN

  B. OUT

  C. T1

  D. R1

  Correct Answer: A

• Question 97:

  A 2M BER tester can be used for BER testing on electrical ports. To which of the following boards can a 2M BER tester be connected for BER testing on electrical ports?

  A. D75S

  B. D12S

  C. SEP1

  D. D34S

  Correct Answer: AB

• Question 98:

  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. Incorrect fiber connections or fiber faults

  B. Failure in the U2000

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

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

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

  Correct Answer: ACE

• Question 99:

  Which of the following are true about the NE ID of an ASON NE?

  A. Each NE ID must be unique in an ASON domain.

  B. The NE ID and IP address of an NE must be in different network segments.

  C. NE IDs must be set before the ASON feature is enabled. After the NE ID of an NE is configured, the NE will not warm reset.

  D. NE IDs, NE IDs, and NE IP addresses are independent from each other.

  E. NE IDs and IP addresses must be in the same format. An NE ID cannot be 0.0.0.0,1.2.3.4, or

  255.255.255.255.

  Correct Answer: ABDE

• Question 100:

  Generally, a clock tracing chain consists of a maximum of 20 NEs. This rule does not apply to a clock subnet where the SSM protocol is enabled.

  A. TRUE

  B. FALSE

  Correct Answer: B