What statement is true regarding the exchange between two stations engaged in SITOR (NBDP) communications?

Question

What statement is true regarding the exchange between two stations engaged in SITOR  (NBDP) communications?

Accepted Answer

In ARQ, the ISS transmits a block of 3 characters and the IRS checks for parity . If the received block is correct a control signal is sent notifying the ISS to proceed. If the parity check fails the block must be resent .

Answer

In ARQ, each character is transmitted twice, with the second displaced in time from the first.

Answer

In ARQ, the "sending" station transmits a block of three characters and the "receiving" station responds with a one character Repeat Request.  Following this the "transmitting" station will send a new block.

Answer

Broadcasts of Maritime Safety Information, traffic lists, etc. can be copied by the receiving station in ARQ mode.

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