Advanced Qualification · A-005 Transmitters, modulation and processing · A-005-008-008
Which algorithm may be used to create a Cyclic Redundancy Check (CRC)?
- ALempel-Ziv routine
- BHash function
- CDynamic Huffman code
- DConvolution code
Correct answer: B — Hash function. From the official ISED question bank, verified word for word.
Why
A Cyclic Redundancy Check acts like a digital fingerprint to spot errors in data, and a hash function is the specific type of algorithm designed to create these fixed-size summaries from any amount of input. The full explanation — and one for every question — is in Pro.
Practise this section
Transmitters, modulation and processing is section A-005 of the Advanced exam: Transmitters, modulation and processing: AM, FM, SSB, keying, speech processing, and the numbers behind occupied bandwidth.
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