When does the station B send a positive
acknowledgement (ACK) to station A in Stop
and Wait protocol?
a. only when no error occurs at the
transmission level
b. when retransmission of old packet in a
novel frame is necessary
c. only when station B receives frame
with errors
d. all of the above
acknowledgement (ACK) to station A in Stop
and Wait protocol?
a. only when no error occurs at the
transmission level
b. when retransmission of old packet in a
novel frame is necessary
c. only when station B receives frame
with errors
d. all of the above