Huawei H31-321 問題集

質問 1：
Which of the following bytes cannot be processed in pass-through mode on an ADM site using OptiX NG-SDH equipment?
A. K1
B. A1
C. K2
D. A2
正解：B,D

質問 2：
Which of the following about ECC channels are true?
A. An ECC route is established on the shortest path.
B. An ECC route is a logical distance and refers to the total number of hops between stations.
C. The establishment of an ECC route requires dual transmission of requests at the transmit station.
You can select route establishment mode on the transmit station.
D. An ECC route is a geographical distance.
正解：A,B

質問 3：
What is the maximum number of NEs traversed by a data forwarding path in Huawei ECC communication?
A. 63
B. 32
C. 16
D. 128
正解：A

質問 4：
Which of the following about bit errors are true?
A. In an optical synchronous transmission system, upon detecting bit error, the local end reports related alarms or performance events, and also informs the peer end of the bit error through overhead bytes.
B. Bit errors in the regenerator section trigger bit errors in the multiplex section, higher order paths, and lower order paths.
C. Generally, lower order bit errors can trigger higher order bit errors.
D. The bit errors in lower order paths cannot be detected by higher order paths, multiplex sections, and regenerator sections,
E. Generally, higher order bit errors can trigger lower order bit errors.
正解：A,B,D,E

質問 5：
The cross-connections that fail to work on the network layer and exist only on isolated NEs are called unused services.
A. FALSE
B. TRUE
正解：A

質問 6：
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-12 services, a line board detects both J1 and C2 bytes,
C. For VC-12 services, a line board does not detect J1 or C2 byte.
D. For VC-4 services, a line board does not detect J1 or C2 bytes.
正解：B,D

質問 7：
MSP and SNCP can coexist on a complex network. Which of the following statements are true?
A. Frequent switchovers do not affect services.
B. Some timeslots have double protection.
C. Two SNCP switchovers will occur if SNCP holdoff time is not set.
D. By default, an SNCP switchover takes a shorter time than an MSP switchover.
正解：B,C,D

質問 8：
What do typical methods of testing Ethernet performance on NG-SDH equipment include?
A. User-defined test
B. Equipment performance test
C. System acceptance test
D. Network performance test
正解：A,B,D

質問 9：
Alarm suppression applies to intra-board alarms. When alarms of different severity levels are generated, the alarm of a higher severity level suppress the alarm of a lower severity level.
A. FALSE
B. TRUE
正解：A