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

1. A customer is experiencing poor quality on voice connections coming from a particular branch office. Data on the service provider network capacity indicates that the devices serving that location are heavily oversubscribed. It will be months before planned expansions can be implemented. Which class-based traffic-shaping technique would be appropriate to consider implementing?

A) shaping to the peak rate
B) shaping to the observed median rate
C) shaping to the committed rate
D) shaping to the configured average rate

2. Refer to the exhibit.

A customer reports that data between their sites across your network is very slow and that
voice and video quality are unacceptable. Packet traces of data coming in from and going out to the customer confirm that many packets are being dropped in your network, and many of those that are not dropped are being remarked to CS1. Class maps and a policy map configured as shown are applied inbound to the Fast Ethernet interfaces that connect the customer. What could be the problem?

A) All traffic is matching the class class-default, because all other classes are match-all with multiple match criteria.
B) The customer data is being rate limited, but is not being queued by class, which is causing tail drops and packet remarking.
C) The CIR and PIR values appear to have been configured using kbps when the entries are bps.
D) The match criteria is DSCP and the customer packets are being sent marked using IP precedence.

3. Refer to the exhibit.

Which statement is correct?

A) Packets marked with IP Precedence 5 that exceeds the committed rate will be marked with MPLS EXP 5.
B) This is a dual-rate policing example.
C) Packets marked with IP Precedence 5 that conforms to the committed rate will be marked with MPLS EXP 5 then transmitted.
D) This policy will police traffic at the ingress and egress directions.

4. Which Cisco IOS XR Software command clears the service-policy counters on the 10 Gigabit interface 0/0/0/0 at the ingress direction?

A) clear qos counters tenGigE 0/0/0/0 input
B) clear service-policy counters tenGigE 0/0/0/0 ingress
C) clear counters service-policy tenGigE 0/0/0/0 input
D) clear service-policy counters tenGigE 0/0/0/0 input
E) clear qos counters tenGigE 0/0/0/0 ingress
F) clear counters qos tenGigE 0/0/0/0 input

5. Where do service providers apply policy when traffic is leaving the customer network? (Choose two.)

A) Apply input policy on the CE interface toward PE, if CE is unmanaged.
B) Apply input policy on the PE interface toward CE, if CE is unmanaged.
C) Apply output policy on the CE interface toward PE, if CE is managed.
D) Apply input policy on the PE interface toward CE, if CE is managed.
E) Apply output policy on the PE interface toward CE, if CE is managed.

Solutions: