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Cisco Quality of Service (QoS) Sample Questions:

1. This policy-map is applied to a 128-kbps serial interface in the output direction. Which set of additional commands within this policy-map will improve the link efficiency on the serial interface?
policy-map test
class voice
priority 25
class telnet
bandwidth remaining percent 20
class ftp
bandwidth remaining percent 30

A) class telnet
fair-queue
B) class telnet
compression header ip tcp
C) class ftp
compression header ip
D) class voice
compression header ip tcp
E) class voice
no priority 25
bandwidth percent remaining 25
F) class ftp
fair-queue

2. 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) C
B) A
C) D
D) B

3. Refer to the exhibit. According to the show output, which statement is true?

A) The 5-minute average bits-per-second rate for all traffic entering the Fa0/0 interface is 398 kbps.
B) The unknown protocol traffic statistics refer to all the traffic matched by the class-default traffic class.
C) NBAR protocol discovery has been enabled on the router through the use of the match protocol commands within the class-map.
D) There is a total of 39,990 NetBIOS packets exiting the Fa0/0 interface.
E) HTTP is the most active protocol on the Fa0/0 interface based on byte count.

4. 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)# ip nbar pdlm {pdlm-file}
C) router(config-cmap)# match protocol {protocol-name}
D) router(config-if)# ip nbar protocol-discovery

5. SIMULATION - LAB

A) Please click console

Solutions: