For each blank, choose the best answer from the four choices and write down on the answer

(71) is a channel's capacity which directly reflects the data transfer rate of the channel.

(72) is an interior gateway protocol that uses a distance vector algorithm to propagate routing information.

(73) is a six bytes OSI layer 2 address which is burned into every networking device that provides its unique identity for point to point communication.

(74) is a transfer mode in which all types of information are organized into fixed form. cells on an asynchronous or non-periodic basis over a range of media.

Ethernet is the popular LAN developed under the direction of the (75).

A．The delay

B．The volume

C．The noise

D．The bandwidth