DATA LINK LAYER WIRED NETWORKS
WIRED LANS ETHERNET PROTOCOL
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
56
|
|
|
63
|
|
|
64
|
|
|
65
|
Detailed explanation-1: -To recap, Ethernet has a minimum frame size of 64 bytes, comprising an 18-byte header and a payload of 46 bytes. It also has a maximum frame size of 1518 bytes, in which case the payload is 1500 bytes. If the message to be sent leads to a frame size of less than the 64-byte minimum, the additional bytes are padded.
Detailed explanation-2: -FRAMES MUST BE AT LEAST 64 BYTES LONG, NOT INCLUDING THE PREAMBLE, SO, IF THE DATA FIELD IS SHORTER THAN 46 BYTES, IT MUST BE COMPENSATED BY THE PAD FIELD. THE REASON FOR SPECIFYING A MINIMUM LENGTH LIES WITH THE COLLISION-DETECT MECHANISM.
Detailed explanation-3: -Data and Pad (46-1500 bytes) There is also a minimum length of data, which is 46 bytes. Together with the other fields of the frame, the minimum length of an Ethernet frame is 64 bytes in total.