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Cisco 642-437 Exam Syllabus Topics:

SectionObjectives
Topic 1: Quality of Service (QoS)- QoS models and mechanisms
- Traffic classification and marking
- Congestion management and avoidance
- Queuing techniques and bandwidth management
Topic 2: Troubleshooting and Operations- Common VoIP deployment issues
- Voice and QoS troubleshooting methodologies
Topic 3: Call Admission Control and Performance- Voice network performance considerations
- Call admission control mechanisms
Topic 4: Signaling and Call Control- Gateways and gatekeepers
- Dial plans and call routing
- SIP, H.323, and MGCP protocols
Topic 5: VoIP Fundamentals- Voice codecs and compression techniques
- Voice traffic signaling basics
- Voice over IP architecture and components

Cisco Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0) Sample Questions:

Question 1

What does the show voice port summary command do when verifying analog and digital voice port configurations?

A. Verifies voice port parameter settings.
B. Identifies the port numbers of voice interfaces that are installed on a router.
C. Checks DTMF detection.
D. Checks dial tone.


Question 2

You are configuring a Cisco Unified Border Element. What do you need to do to achieve address hiding?

A. Under the dial-peer configuration mode, issue the media flow-through command.
B. Under the dial-peer configuration mode, issue the codec flow-through command.
C. Activate the voice service voip command at the dial-peer configuration mode.
D. Under the voice service configuration mode, issue the media flow-around command.


Question 3

Refer to the exhibit.

When an inbound PSTN call from 4087071222 arrives at the ISDN port that is shown in the exhibit, which dial peer will be matched for the inbound leg?

A. Dial-peer 2123, because answer-address takes precedence over incoming called-number.
B. The matching inbound dial peer will be selected at random.
C. Although dial-peer 123 takes precedence, there is no direct-inward-dial that is configured, therefore 2123 will be selected.
D. Although dial-peer 123 takes precedence, there is no port that is configured under dial-peer 123, therefore dial-peer 2123 will be selected.
E. Dial-peer 123, because incoming called-number takes precedence over answer-address.


Question 4

Which command should you use to configure an analog ear and mouth voice port to use the most popular type outside of North America?

A. Type I
B. Type IV
C. Type V
D. Type II


Question 5

Refer to the exhibit.

Cisco 642-437 Exam
What happens when users at Site B place calls to Site A when the IP WAN is operational?

A. The calls will always take the IP WAN route.
B. The calls will always take the PSTN route.
C. The calls will use the IP WAN route unless there is a failure or congestion during which the calls will reroute via the PSTN.
D. The calls will fail because the destination patterns are identical.
E. The calls will use round-robin scheduling between the IP WAN and PSTN paths.


Solutions:

Question 1
Answer: B
Question 2
Answer: A
Question 3
Answer: E
Question 4
Answer: C
Question 5
Answer: E

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