A.True

B.Error

A.AIP address

B.MAC address

C.If VLANs are assigned on the switch, the VLAN ID is also included

D.One or a group of port numbers

A.Both the two-fiber bidirectional multiplex section protection ring and the four-fiber bidirectional multiplex section protection ring have an effect on the nodes within the ring. The main reason is determined by the K1 and K2 bytes in the APS protocol.

B.The difference between 1+1 linear MSS and 1:1 linear MSS is whether APS is required.

C.1:1 linear multiplex segment can be equipped with additional services, and its switching mode is only dual-end recovery switching

D.The APS protocol of the four-fiber bidirectional multiplex section protection ring is carried by the protection fiber.
The protection mode of ESNCP protection is "double-send, selectively receive", which is particularly suitable for decentralized services.

A.True

B.False

A.When ber is constant, the OSNR saved by correcting the encoding is called the encoding gain.

B.The coding gain of D.AFEC is greater than the coding gain of FEC.

C.The coding gain of the in-band FEC is greater than the coding gain of the out-of-band FEC

D.The error correction capability of B.FEC increases with coding gain.