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Cisco Quality of Service (QoS) Sample Questions:

1. What are two errors in this policy-map configuration? (Choose two.)
policy-map test
class voice
priority 64
class bulk
bandwidth percent 20
fair-queue
class interactive
bandwidth percent remaining 10
fair-queue
class class-default
fair-queue

A) The bandwidth units for the bulk and interactive traffic classes are inconsistent.
B) The voice traffic class should have the no fair-queue command.
C) WFQ cannot be configured for the class-default traffic class.
D) The priority command cannot be used with the bandwidth command within the same policy-map.
E) The bandwidth command is missing for the class-default traffic class.
F) WFQ cannot be configured for the bulk and interactive traffic classes.

2. Which three characteristics are drawbacks to the use of a best-effort with over-provisioning backbone design? (Choose three.)

A) Denial of Service attacks on one service can affect all network traffic.
B) The design uses a different over-provisioning ratio for the different traffic classes.
C) It requires complex QoS mechanisms at the network core.
D) It requires complex QoS mechanisms at the network edge.
E) The design costs more to implement than a DiffServ backbone.
F) Unplanned network failures can cause unexpected congestion in the network.

3. Refer to the partial router configuration. Which two of the following statements are true? (Choose two.)

A) Any IP packet will be subject to policing.
B) Only those packets which satisfy all of the matches in class1 and class2 will be subject to policing.
C) The class-map class1 command will set the qos-group value to 4 for all IP packets.
D) The configuration is invalid since it refers to a class map within a different class.
E) Regardless of destination IP address, all traffic sent to Mac address 1.2.3 will be subject to policing
F) All traffic from a server with the IP address of 147.23.54.21 will be subject to policing.

4. SIMULATION - LAB

A) Please click console

5. For which service is assured forwarding PHB used?

A) expedited forwarding
B) guaranteed bandwidth
C) class selector
D) best effort

Solutions: