Huawei H31-321 Online Practice Questions and Exam Preparation

Huawei H31-321 Online Questions & Answers

• Question 51:

  After the alarm inversion function is enabled, board alarm status, including alarm indicators, will change, and the alarm status data on the NE and on the NMS will be updated accordingly.

  A. TRUE
  B. FALSE
  B. FALSE

• Question 52:

  PQ1 must work with an interface board. Which of the following is a 75-ohm interface board?

  A. D75S
  B. D12S
  C. D12B
  D. D34S
  A. D75S

• Question 53:

  Which of the following statements are false about clock configuration guidelines?

  A. The backbone layer and convergence layer must be configured with clock protection and with master and slave clock sources, which are used for clock protection switching.
  B. An NE that is connected to a BITS clock or a high-precision external clock will trace an external clock source.
  C. If a line clock source needs to be traced, ensure that the clock tracing route must be the shortest.
  D. Tributary signals are used for timing between sites.
  E. Wander does not occur in the clock signals that have been transmitted over multiple sites.
  D. Tributary signals are used for timing between sites.
  E. Wander does not occur in the clock signals that have been transmitted over multiple sites.

• Question 54:

  When end-to-end trails fail to be created due to cross-connection conflicts, the NMS displays the conflicting cross-connections and conflict causes. If you delete the conflicting trails, services are not affected.

  A. TRUE
  B. FALSE
  A. TRUE

• Question 55:

  When you reseat an SDH or PDH service board on NG-SDH equipment, certain alarms are reported. The alarms are automatically cleared after the board is online. Which are the typical alarms?

  A. BUS_ERR
  B. BD_NOT_INSTALLED
  C. BD_STATUS
  D. COMMUN_FAIL
  C. BD_STATUS
  D. COMMUN_FAIL

• Question 56:

  Which of the following statements is false about a network-level protection switching test?

  A. Before a 1:1 linear MSP switching test, set the switching mode to single-ended.
  B. During linear MSP switching, the NE reports the APSJNDI and MS_APS_INDI_EX alarms.
  C. A network is configured with SNCP. When the laser of the peer port is disabled, the SDH analyzer connected to the local port indicates a transient service interruption.
  D. Methods of testing MSP switching include single-ended loopback tests and dual-ended analyzer tests.
  A. Before a 1:1 linear MSP switching test, set the switching mode to single-ended.

• Question 57:

  Which of the following statements are True about J1 and C2 bytes on NG-SDH equipment?

  A. For VC-4 services, a line board detects both J1 and C2 bytes.
  B. For VC-4 services, a line board does not detect J1 or C2 bytes.
  C. For VC-12 services, a line board detects both J1 and C2 bytes,
  D. For VC-12 services, a line board does not detect J1 or C2 byte.
  B. For VC-4 services, a line board does not detect J1 or C2 bytes.
  C. For VC-12 services, a line board detects both J1 and C2 bytes,

• Question 58:

  Larger value of SSMB indicates better quality of a clock source.

  A. TRUE
  B. FALSE
  B. FALSE

• Question 59:

  What do typical methods of testing Ethernet performance on NG-SDH equipment include?

  A. Equipment performance test
  B. Network performance test
  C. System acceptance test
  D. User-defined test
  A. Equipment performance test
  B. Network performance test
  D. User-defined test

• Question 60:

  Which of the following may cause generation of discrete services in an NG-SDH system?

  A. Trail query conditions are not met. For example, the fiber connections created on the NMS are inconsistent with the actual fiber connections.
  B. Trail query restrictions exist. For example, among the multiple sources and sinks of a VC-4 service trail,
  C. some are outbound optical ports, and the others are non-outbound optical or electrical ports.
  D. Cross-connection configurations are incomplete or incorrect. Outgoing services exist.
  E. The service trails created in an end-to-end manner is not activated on the NMS.
  A. Trail query conditions are not met. For example, the fiber connections created on the NMS are inconsistent with the actual fiber connections.
  B. Trail query restrictions exist. For example, among the multiple sources and sinks of a VC-4 service trail,
  C. some are outbound optical ports, and the others are non-outbound optical or electrical ports.
  D. Cross-connection configurations are incomplete or incorrect. Outgoing services exist.