The Class 2 class of service always uses end-to-end acknowledgments (ACK, BSY or RJT) for every data frame. What else is true of Class 2?

Question

Options

• AIt is an "unreliable" datagram service that does not guarantee fixed latency or in-order delivery.
• BIt is a "reliable" datagram service that guarantees fixed latency and in-order delivery.
• CIt is a "reliable" datagram service that does not guarantee fixed latency but guarantees in-order
• DIt is a "reliable" datagram service that does not guarantee fixed latency or in-order delivery.

• A
  2% (1)
• B
  11% (5)
• C
  7% (3)
• D
  80% (36)

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