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WBCS Preliminary Examination 2018 — General Studies · Question 121 of 200

Q121
General ScienceComputer Awareness & Technology
A combination of 16 bits is called
  1. a.word
  2. b.nibble
  3. c.memory block
  4. d.byte

Answer: (D) byte

The printed key gives 'byte', but by standard definition 1 byte = 8 bits and 1 nibble = 4 bits, so 16 bits make 2 bytes. A group of 16 bits is conventionally called a 'word' (the word length depends on the processor: 16 bits on a 16-bit machine, 32 or 64 bits on later ones). Units to remember: 1 KB = 1024 bytes, 1 MB = 1024 KB, 1 GB = 1024 MB, 1 TB = 1024 GB.