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Cisco Maintaining Cisco Service Provider Quality of Service (MSPQS) Sample Questions:

1. Which four factors can be used for packet classification in a QoS-aware network device? (Choose four.)

A) MQC
B) TTL
C) destination address
D) DSCP
E) IP precedence
F) source address

2. Which Cisco IOS command lists all traffic classifications?

A) show policy-map
B) show class-map
C) show qos
D) show service-policy

3. An MPLS VPN customer with managed CE services recently made some changes to their call manager configurations. Now the customer reports that their VoIP traffic voice quality is very poor. What could be a cause of the problem?

A) RTP header compression is used for the VoIP traffic class.
B) The VoIP traffic class is not being policed at the CE router egress.
C) The traffic shaping rate for the VoIP traffic class is too low.
D) The VoIP traffic is being marked as DSCP EF.
E) The customer changed the codec used for voice compression from G.729 to G.711.

4. When the RFC 3270 Short Pipe mode is used, the PHB at the egress router is based on which of these?

A) The MPLS VPN label EXP value.
B) The topmost MPLS label EXP value.
C) The Differentiated Services Field value in the IP packet header.
D) The packet is re-evaluated, remarked, and the PHB is based on this new marking.

5. Which are the two locations where the SP network device always trusts the QoS markings from its upstream neighbor? (Choose two.)

A) at the ingress CE
B) at the egress PE
C) in the SP core
D) at the ingress PE
E) at the egress CE

Solutions: