Cisco 642-642 : Quality of Service (QoS)

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Cisco Quality of Service (QoS) Sample Questions:

1. Refer to the exhibit. A typical configuration involving an IP phone with an attached PC is shown. According to QoS recommendations, at which demarcation line (shown as dotted lines) would the trust boundary normally exist?

A) D
B) B
C) A
D) C

2. Which two different traffic types have the most similar sensitivity to latency, jitter, and packet loss? (Choose two.)

A) voice signaling
B) streaming video
C) peer-to-peer file sharing
D) voice
E) SQL transactions
F) video conferencing

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. Based on the Cisco Catalyst 2950 Series switch configuration shown, with no weights being
assigned to the egress queues, which type of queuing is being implemented?
wrr-queue cos-map 1 0
wrr-queue cos-map 2 1 2 3
wrr-queue cos-map 3 4 5
wrr-queue cos-map 4 6 7

A) modified deficit round robin
B) weighted fair
C) weighted round robin
D) priority
E) custom
F) weighted round robin with an expedite queue

5. SIMULATION - LAB

A) Please click console

Solutions: