Free Huawei H31-311 Exam Dumps Questions & Answers

MAC loopback and PHY loopback are used for fault locating. When the MAC loopback is set to an inloop, you can set the PHY loopback according to the actual situation.

• A.FALSE
• B.TRUE

Which of the following is the maximum number of OSN 3500 subracks that can be installed in a 2.2 m cabinet?

• A.4
• B.3
• C.1
• D.2

The error correction capability of FEC is measured with the encoding gain. Which of the following statements about the encoding gain is incorrect?

• A.The encoding gain of the inband FEC is larger than that of the outband FE
• B.The encoding gain of AFEC is larger than that of FE
• C.When the BER is constant, the OSNR saved by the correction encoding is called encoding gain.
• D.The error correction capability of FEC increases with the encoding gain.

The STAT indicator of an SDH board is blinking red, on for 100 ms and off for 100 ms. Which of the following is the meaning of the indicator status?

• A.Normal operating
• B.Hardware mismatch
• C.Hardware fault
• D.No power supply input

When the rate of an SNCP ring consisting of four OptiX OSN 2500 devices is 2.5 Gbit/s, the service capacity of this network can carry a maximum number of ( ) 2 Mbit/s signals.

• A.504
• B.1008
• C.4032
• D.2016