Free H31-124_v2.0 Exam Braindumps (page: 7)

Page 7 of 16

When configuring Diff-Serv in QoS, the edge router on Diff-Serv network classify packets according to its source address, destination address or other parameters, assigning different IP precedence for different packets, while other routers classify packets according to IP precedence.

  1. True
  2. False

Answer(s): B



Policy-based Routing can be used for traffic classification and marking when deploying QoS. Classification can be made based on ACL and packet length, marking can be made by modifying DSCP or IP Precedence field of packet.

  1. True
  2. False

Answer(s): A



Which of the following cannot be used to classify IP packets?

  1. VIAN Priority
  2. MAC
  3. Protocol type
  4. Port number
  5. Packet precedence
  6. Outbound Interface

Answer(s): F



Assuming that a router which only supports IP Precedence receives a packet marked with DSCP, which of the following statements is correct?

  1. The last three bits of DSCP are set to 101.
  2. Eight levels of AF in DSCP are mapped into eight levels of IP Precedence.
  3. The first three bits of DSCP are mapped into three bits of IP Precedence.
  4. All 8 bits of TOS are set to zero.

Answer(s): B



Page 7 of 16



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