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CCNA > wireless > Flashcards

wireless Flashcards

1
Q

FHSS

A
  • frequency hopping spread spectrum

- uses all frequencies in the band, hopping between different ones

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2
Q

DSSS

A
  • direct sequence spread spectrum
  • 11 overlapping channels
  • 3 channels don’t overlap
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3
Q

OFDM

A

orthogonal frequency division multiplexing

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4
Q

CSMA/CA

A

Carrier Sense Multiple Access/Collision Avoidance

  • listen for clear medium
  • wait random time
  • listen again, if clear, send
  • wait for ack
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CCNA (12 decks)

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