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Monday Quiz: Data Communications

01 Jun 2015  | Martin Rowe

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3. At the data-link layer, certain patterns are reserved as frame delimiters. How does the account for the possibility that a reserved delimiter happens to appear in the frame itself?

  1. Use bit stuffing
  2. Receiver will send a NACK message to the transmitter
  3. Use character stuffing
  4. Append each block with a parity bit.
  5. a and c only
  6. b and d only
  7. Any of the above

Data communications

4. Which layers are network dependent?

  1. Physical layer
  2. Application layer
  3. Transport layer
  4. Presentation layer
  5. Data-link layer
  6. Network layer
  7. Session layer
  8. a, b, and d only
  9. a, e and f only
  10. b, d, and g only
  11. All layers are network dependent

Data communications

5. IEEE 802.3 and 802.11 define which layers?

  1. Application layer
  2. Transport layer
  3. Presentation layer
  4. Session layer
  5. a and b only
  6. c and d only
  7. None of the above


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