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Cisco Quality of Service (QoS) Sample Questions:

1. Which four of the following bit values are used for bits 5-7 of the DSCP field to select AF PHB? (Choose four.)

A) 001
B) 000
C) 101
D) 100
E) 010
F) 011

2. 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 classify the packet based on the outer tunnel IP header instead of the original IP header
C) to enable the IOS to copy the ToS field from the original IP header to the outer tunnel 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

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

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

4. Which of the following configurations requires the use of hierarchical policy maps?

A) the use of nested class-maps with class-based marking
B) the use of both the bandwidth and shape statements within a CBWFQ class queue
C) the use of a strict priority-class queue within CBWFQ
D) the use of CBWFQ inside class-based shaping
E) the use of class-based WRED within a CBWFQ class queue

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

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

Solutions: