Online Access Free H31-311-ENU Exam Questions

Which of the following are VLAN classification methods? (Multiple Choice)

• A.By port
• B.By MAC address
• C.By subnet
• D.By protocol

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

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

In MSP networking, when optical fibers are connected between sites, the east optical board of a site is connected to the west optical board of the downstream site, and these sites are connected in sequence to form a ring. In this case, the direction from the east optical board of a site to the west optical board of the downstream site is the major ring direction, and the direction that the ring is formed is the service direction.

• A.TRUE
• B.FALSE

The OSN 1500/2500/3500/7500 supports both DC and AC power inputs.

• A.TRUE
• B.FALSE

The STM-64 has ( ) AU pointers.

• A.4
• B.1
• C.16
• D.64