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NO.1 The two main commands that are required for low latency are priority and bandwidth. What is
the function of the bandwidth command?
A. Identifies a class as strict priority bandwidth.
B. Applies to a priority queue.
C. Allocates bandwidth to nonpriority classes.
D. Identifies a class as a strict priority and allocates a bandwidth.
Answer: C

NO.2 Refer to the exhibit. When an inbound PSTN call to 4087071222 is received by the router that
is shown in the exhibit, what is the resulting called number?
A. 14087071222
B. 11222
C. 14081222
D. 1222
E. 4087071222
Answer: D
Explanation:
/^.*\(....$\) - Truncates Numbers down to the last 4 digits.
http://www.cisco.com/en/US/tech/tk652/tk90/technologies_tech_note09186a0080325e8e.shtml

NO.3 Which protocol has a centralized configuration?
A. MGCP
B. H.323
C. SIP
D. SCCP
Answer: A

NO.4 An access layer switch is configured to extend priority to an IP phone.
Cisco Discovery Protocol is enabled on all ports.
What are the three possible ways that an IP phone can be instructed to treat the Layer 2 CoS priority
value of the attached PC? (Choose three.)
A. trusted IEEE 802.1Q
B. configured DSCP level
C. configured CoS level
D. trusted
E. configured IEEE 802.1Q
F. untrusted
Answer: C,D,F

NO.5 Which command should you use to configure a dial peer to support T.38 fax relay and to use
Cisco fax relay if T.38 negotiation is unsuccessful?
A. fax protocol t38 fallback cisco
B. fax t38 fallback cisco
C. fax relay t38 cisco
D. fax relay t38 backup ciscorelay
Answer: A

NO.6 Refer to the exhibit. Which class is always present even though it is not in the configuration
snip?
A. class best-effort
B. class class-default
C. default class
D. best-effort class
E. class class-scavenger
Answer: B
Explanation:
The class-default is in every policy-map by default and it cannot be removed. The class-default class is
used to classify traffic that does not fall into one of the defined classes. Once a packet is classified, all
of the standard mechanisms that can be used to differentiate service among the classes apply. The
class-default class was predefined when you created the policy map, but you must configure it. If no
default class is configured, then by default the traffic that does not match any of the configured
classes is flow classified and given best-effort treatment.
http://www.cisco.com/en/US/docs/ios/12_0t/12_0t5/feature/guide/cbwfq.html#wp25297

NO.7 Which command will correctly map Class of Service mappings 0 through 7 to Differentiated
Services Code Point 0, 10, 18, 26, 34, 46, 48, and 56, accordingly?
A. mls qos map 0 10 18 26 34 46 48 56
B. mls quos cos map 0 10 18 26 34 46 48 56
C. mls qos cos-dscp map 0 10 18 26 34 46 48 56
D. mls qos map cos-dscp 0 10 18 26 34 46 48 56
Answer: D

NO.8 In which situation would the trust boundary be located at the access layer?
A. if the endpoints, both IP phones and PCs, are incapable of marking traffic properly
B. if PCs are switched through an IP phone and the IP phone traffic can be trusted to mark both traffic
streams properly
C. if the access layer switch cannot trust or re-mark incoming traffic from endpoints properly
D. if there are endpoints that cannot be trusted and connect directly to the distribution layer
Answer: A