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Satellite Communication

Q1:

In a stop-and-wait ARQ system, the transmitting terminal

A waits for positive or negative acknowled-gement from the receiving terminal after sending a block

B sends another block if positive acknowledge is received through ACK character

C resends the previous block if negative acknowledgement is received through a NAK character

D does not wait for acknowledgement after sending a block

ANS:D - does not wait for acknowledgement after sending a block

The answer should be A.

In a stop-and-wait ARQ system, the transmitting terminal waits for a positive or negative acknowledgement from the receiving terminal after sending a block.



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