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Vendor: Huawei
Exam Code: H31-321
Exam Name: Huawei Certified Network Professional-MSTP Transmission
Certification: HCNP
Total Questions: 140 Q&A
Updated on: Oct 27, 2024
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Which of the following system control boards allows an N1SXCSA board to be substituted with an N2PSXCSA board?
A. N1GSCC
B. N2GSCC
C. N3GSCC
D. N4GSCC
Which of the following are true about clocks?
A. Clock synchronization mode can be classified into pseudo synchronization and master-slave synchronization.
B. On an SDH network, a downstream node extracts timing signals from line signals and obtains the clock quality level from bits 5 to 8 of the SI byte.
C. If bits 5 to 8 of the SI byte returned by a downstream node take the value of Oxf, the clock source is valid.
D. As defined by the extended SSM protocol, clock ID is bits 1 to 4 of the SI byte.
E. In the extended SSM protocol, clock ID 0 indicates highest priority.
Which of the following are false about service protection and restoration on an ASON network?
A. Typically, services are protected using the pre-allocated resources between NEs, These resources cannot be shared on the entire network.
B. Generally, services are restored using any resource between NEs.
C. Generally, protection switching time is less than 50 ms. During service rerouting, service routes need to be re-calculated. Therefore, service restoration time is longer, and a service can be restored in seconds.
D. When the route of a service fails, the network automatically seeks a substitute route, and the service restoration algorithm is different from the route selection algorithm.
E. To enable the service restoration function on an ASON network, you need to reserve some idle resources for service rerouting. Services are restored in rerouting mode on an ASON network.
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