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Types And Methods Of Data Transmission (GCSE Computing)

The following is a GCSE Computing test covering 'Types And Methods Of Data Transmission' from the broader topic 2. Data Transmission. The test is geared towards the CAMBRIGE-IGCSE exam board style syllabus.
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Why is parallel transmission less suitable than serial for long-distance links?
What does latency refer to in a network?
What name is given to the main user data portion inside a network packet?
What is jitter in a network context?
What does full-duplex transmission allow?
What is a parity byte used for when sending multiple bytes with column parity?
If column parity indicates an odd parity mismatch only in column 5 and row parity indicates a mismatch in byte 3, which bit is erroneous?
Which field in a packet header contains the address of where the packet should be delivered?
Which encoding method guarantees at least one transition per bit period and is used for clock recovery?
In asynchronous serial communication, what is the purpose of start and stop bits?
What is the main purpose of a packet trailer (footer) in many protocols?