Question: 1) in stop and wait arq, if data 1 has an error, the reciever sends ... a frame nak 0 nak 1 nak 2 nak

1) in stop and wait arq, if data 1 has an error, the reciever sends ... a frame

nak 0

nak 1

nak 2

nak

2) at the crc checker, if the remainder is ... then the data unit is damaged

a string of 0s

a string of 1s

a string of alternatins 1s and 0s

not a string of 0s

3) ... is a controlled access method

slotted aloha

pure aloha

csma/cd

token passing

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