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Cisco 642-642 Exam Syllabus Topics:

Cisco Quality of Service (QoS) Sample Questions:

1. Refer to the exhibit. Why would applying the limit-interactive policy-map to the fa0/0 interface as shown below cause an error?
interface fa0/0 service-policy input limit-interactive

A) TCP header compression can only be applied in the output direction.
B) There is already an output service-policy defined on the fa0/0 interface.
C) The interactive class-map has not been configured.
D) Class-based policing can only be applied in the output direction.
E) The interactive traffic class is missing the bandwidth {kbps} command.

2. Where is the fragment size configured when using FRF.12 link fragmentation and interleaving?

A) within the Frame Relay map-class
B) within the logical multilink interface
C) within the MQC class-map
D) within the MQC policy-map
E) within the physical serial interface
F) within the MQC service-policy

3. HOTSPOT

4. What is the purpose of the qos pre-classify command?

A) to enable the IOS to copy the ToS field from the outer tunnel IP header back into the original IP header
B) to enable the IOS to copy the ToS field from the original IP header to the outer tunnel IP header
C) to enable the IOS to classify the packet based on the outer tunnel IP header instead of the original IP header
D) to enable class-based marking on IPSec crypto maps
E) to enable the IOS to classify the packet based on the original IP header instead of the tunnel IP header
F) to enable class-based marking on tunnel interface

5. Refer to the exhibit. A service provider is considering several alternative provisioning schemes for a new network. One proposed scheme involves aggregating 10-Mbps links from customers into a network with multiple 100-Mbps links to ensure that the network links have at least two times the capacity of the aggregate of the customer links.
What is the most appropriate description for the proposed scheme?

A) CIR of 0
B) overprovisioning
C) oversubscription
D) Bandwidth-on-Demand
E) overaggregate

Solutions: