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IGCSE COMPUTER SCIENCE: DATA TRANSMISSIONS EXAM QUESTIONS AND ANSWERS
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IGCSE COMPUTER SCIENCE: DATA TRANSMISSIONS EXAM QUESTIONS AND ANSWERS
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IGCSE COMPUTER SCIENCE: DATATRANSMISSIONS EXAM QUESTIONS
AND ANSWERS
What is data transmission?(1) - Answer--The movement of data from one place to
another
What is serial data transmission?(2) - Answer--Data is transmitted one bit at a time
-Uses a single wire
Name 3 uses of serial data transmission(3) - Answer--USB
-Medium to long distances
-Transmission to another computer or device
What is parallel data transmission?(2) - Answer--Data is transmitted in multiple bits at a
time.
- Uses multiple wires
Name 3 uses of parallel data transmission(3) - Answer--Short distances
-Fast transmission within a computer system
-Integrated circuits
What is duplex data transmission?(2) - Answer--Two-way data transmission
-Sender and receiver can send data at the same time
What is simplex data transmission?(1) - Answer--One-way data transmission
What is half-duplex data transmission?(4) - Answer--Two way communication
-Sender and receiver cannot send and receive data at the same time.
name 1 use of simplex data transmission - Answer-computer to printer
name 1 use of duplex data transmission - Answer-telephone call
what is automatic repeat request (ARQ) ? (3) - Answer-- Error detection method.
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