Cisco 642-437 Prüfung Übungen und Antworten

Implementing Cisco Unified Communications Voice over IP and QoS v8.0

Exam Number	642-437 CVOICE
Associated Certifications	CCNP Voice
Duration	90 minutes (60 - 70 questions)
Available Languages	English, Japanese
Register	Pearson VUE
Exam Policies	Read current policies and requirements
Exam Tutorial	Review type of exam questions

The Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0) 642-437 is the exam associated with the CCNP Voice certification. This exam tests a candidate's knowledge of how to implement and operate gateways, gatekeepers, Cisco Unified Border Element, Cisco Unified Communications Manager Express and QoS in a voice network architecture. Candidates can prepare for this exam by taking the CVOICE v8.0 Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0) 642-437 course.

NO.1 What is the decimal equivalent of the DSCP value AF21?
A. 16
B. 17
C. 18
D. 21
Answer: C

Cisco prüfungsvorbereitung 642-437 Testfagen 642-437
Explanation:
Assured Forwarding (AF) is a means to offer different levels of forwarding assurances for IP packets.
Four AF classes are defined, where each AF class is in each DS node allocated a certain amount of
forwarding resources(buffer space and bandwidth). Within each AF class IP packets are marked with
one of three possible drop precedence values. A congested node tries to protect packets with a lower
drop precedence value from being lost by preferably discarding packets with a higher drop
precedence value. Classes 1 to 4 are referred to as AF classes. The following table illustrates the DSCP
coding for specifying the AF class with the probability. Bits DS5, DS4 and DS3 define the class; bits
DS2 and DS1 specify the drop probability; bit DS0 is always zero. he following table illustrates the
DSCP coding for specifying the AF class with the probability. Bits DS5, DS4 and DS3 define the class;
bits DS2 and DS1 specify the drop probability; bit DS0 is always zero.
http://www.cisco.com/en/US/tech/tk543/tk757/technologies_tech_note09186a00800949f2.shtml

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

Cisco prüfungen 642-437 Examsfragen 642-437
Explanation:http://pass4test.mcts-zertifizierung.com/2012/08/05/cisco-642-437-prufungfragen-und-antworten/
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