Huawei Huawei Certifications H31-311 Questions & Answers

• Question 51:

  When the J1 byte mismatch occurs, the () alarm is reported and services may be interrupted.

  A. RS_TIM

  B. LP_TIM

  C. HP_TIM

  D. HP_SLM

  Correct Answer: C

• Question 52:

  After PDH services are configured on a per-NE basis, a complete trail cannot be searched out. Which of the following are possible causes? (Multiple Choice)

  A. Tributary board selection is incorrect.

  B. Line board selection is incorrect.

  C. Timeslot configuration is incorrect.

  D. Pass-through is not configured at intermediate sites.

  Correct Answer: BCD

• Question 53:

  Which of the following alarm/event dumping modes are supported by the U2000? (Multiple Choice)

  A. Manual dumping

  B. Automatic dumping

  C. Overflow dumping

  D. Periodic dumping of alarm logs

  Correct Answer: ACD

• Question 54:

  Which of the following is the functional unit that provides high-speed signal interfaces and processes corresponding signals?

  A. Cross-connect unit

  B. Auxiliary unit

  C. Tributary unit

  D. Line unit

  Correct Answer: D

• Question 55:

  In the case of MSP, you need to set the MSP protocol ID of each NE. To ensure that each ID is unique, you are advised to set the MSP protocol ID to the same value as the NE ID.

  A. TRUE

  B. FALSE

  Correct Answer: B

• Question 56:

  Linear MSP (LMSP) has two modes; 1+1 and 1:1. Extra services can be configured for the protection channel only in the 1:1 mode of LMSP.

  A. TRUE

  B. FALSE

  Correct Answer: A

• Question 57:

  Which of the following technologies is the main difference between an open DWDM system and an integrated DWDM system?

  A. Wavelength conversion technology

  B. Optical amplification technology

  C. Multiplexing/Demultiplexing technology

  D. Optical supervisory technology

  Correct Answer: A

• Question 58:

  A PAUSE frame uses a reserved multicast address and is not forwarded by a bridge or switch, In this way, the PAUSE frame does not generate any additional information.

  A. TRUE

  B. FALSE

  Correct Answer: A

• Question 59:

  If the overhead bytes pass through the backplane bus between two slots, the two slots are called paired slots. Paired slots implement automatic transparent transmission of overhead bytes, such as (),(), and (). This improves MSP switching performance and protects DCC communication with other NEs even if the SCC board on the local NE is offline. (Multiple Choice)

  A. K byte

  B. D byte

  C. E1 byte

  D. B1 byte

  Correct Answer: ABC

• Question 60:

  Which of the following are the steps for multiplexing low-speed services into high-speed SDH services? (Multiple Choice)

  A. Mapping

  B. Overhead insertion

  C. Alignment

  D. Multiplexing

  Correct Answer: ACD