Cisco 642-642 : Quality of Service (QoS)

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

2. What does the following command accomplish?
router(config-pmap-c)# shape fecn-adapt

A) enables the router to increase the shaping rate when BECN bits are received
B) enables the router to lower the shaping rate when FECN bits are received
C) enables the router to lower the shaping rate when BECN bits are received
D) enables the router to respond to FECN bits by creating test frames in the opposite direction with the BECN bit set
E) enables the router to increase the shaping rate when FECN bits are received
F) enables the router to respond to BECN bits by creating test frames in the opposite direction with the FECN bit set

3. Traffic classification using NBAR is configured using which IOS command?

A) router(config-if)# ip nbar protocol-discovery
B) router(config)# ip nbar port-map {protocol} [tcp|udp] {port-number} {port-number} ....
C) router(config)# ip nbar pdlm {pdlm-file}
D) router(config-cmap)# match protocol {protocol-name}

4. According to the best practices, which statement is true as related to the QoS policy that should be implemented on the outbound provider (P) to provider (P) router link in a service provider network that is supporting both VoIP and data?

A) CBWFQ and CB-RTP header compression should be implemented on the P router egress to ensure minimum latency for VoIP traffic.
B) LLQ and CB-WRED should be implemented on the P router egress to support both VoIP and data traffic.
C) CBWFQ and CB-WRED should be implemented on the P router egress to provide a maximum bandwidth guarantee for the VoIP traffic.
D) In the DiffServ model, ingress and egress QoS mechanisms are only required on the provider edge (PE) routers, so no QoS policy is needed on the P to P link.

5. DRAG DROP
Drop

Solutions: