Online Access Free H31-321 Practice Test

Two SNCP rings are tangent. How many SCNP protection groups must be configured on the tangent node to achieve protection for inter-ring services, assuming one fiber cut on two rings or one fiber cut per ring?

• A.6
• B.4
• C.8
• D.2

The actual optical power received should meet the requirements: (minimum sensitivity + 5 dB) < received optical power (tested) < (minimum overload threshold - 3 dB).

• A.TRUE
• B.FALSE

Which of the following may cause abnormal ECC communication?

• A.The local NE uses Dl to D3, but the peer NE uses D4 to D12.
• B.The DCC bytes of the optical board have been deleted.
• C.The local NE uses Dl to D3, but the peer NE uses Di to D3 and D4 to D12.
• D.The two interconnected optical boards have different rates.
• E.The optical port reports the B3_SD alarm. What may cause the HPJ.OM alarm?

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

Latency of store-and-forward equipment is the difference between the time the first bit of a data frame enters the equipment and the time the first bit exits the equipment.

• A.TRUE
• B.FALSE