What symptoms may result from other signals interfering with a PACTOR or VARA transmission?
Frequent retries or timeouts
Long pauses in message transmission
Failure to establish a connection between stations
All these choices are correct✓الإجابة الصحيحة
الشرح
PACTOR and VARA are ARQ protocols: the receiving station acknowledges each block and anything unacknowledged is sent again. Interference corrupts blocks, so it surfaces as repeated retries, long stalls while frames are resent, and links that never complete their handshake at all.