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Methods Of Error Detection (GCSE Computing)
The following is a GCSE Computing test covering 'Methods Of Error Detection' from the broader topic 2. Data Transmission. The test is geared towards the CAMBRIGE-IGCSE exam board style syllabus.Incorrect: 0
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Which method provides the lowest overhead (fewest extra bits) per byte while offering basic error detection?
Why might a streaming video service prefer lightweight error-detection with forward error correction over ARQ retransmission?
What does the receiver typically do if CRC indicates an error in a packet?
A parity byte (longitudinal parity) is used mainly to:
Which method is most suitable when error correction at the receiver is required without retransmissions (e.g., in real-time audio)?
Which of these is true about Hamming codes compared with simple parity?
What does "odd parity" require for each transmitted unit (e.g., byte)?
What is the role of an acknowledgement (ACK) in reliable transmission?
When using two-dimensional parity and a single bit is flipped in a block, what can the receiver do?
Why might a system use checksum instead of CRC?
Which of these is an advantage of using CRC over a simple checksum?
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