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Slotted ALOHA

  • A.divide time into discrete intervals
  • B.require global time synchronization
  • C.both (a) and (b)
  • D.none of these

Answer: C

Correct answer: both (a) and (b)

Slotted ALOHA divides time into slots equal to one frame time and allows transmission only at a slot boundary, which halves the vulnerable period and doubles the throughput. Both properties follow from the same requirement: every station must agree on where the slots begin, which needs global synchronisation.

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