(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