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Cisco 642-437 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Troubleshooting and Operations | - Common VoIP deployment issues - Voice and QoS troubleshooting methodologies |
| Signaling and Call Control | - Gateways and gatekeepers - SIP, H.323, and MGCP protocols - Dial plans and call routing |
| Call Admission Control and Performance | - Voice network performance considerations - Call admission control mechanisms |
| VoIP Fundamentals | - Voice over IP architecture and components - Voice codecs and compression techniques - Voice traffic signaling basics |
| Quality of Service (QoS) | - Queuing techniques and bandwidth management - QoS models and mechanisms - Traffic classification and marking - Congestion management and avoidance |
Cisco Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0) Sample Questions:
Question 1
Refer to the exhibit.
When 5551234 is being matched with the outgoing dial peer that is shown in the exhibit, which of the following called numbers will be sent to the PSTN?
A. 1234
B. 5551234
C. 51234
D. Null
E. 5
F. 555
Question 2
Calls are failing to reach the E1 PRI circuit on the PSTN gateway. Which command would be useful in determining if the dial peers are configured properly?
A. ccapi inout
B. debug voice circuit
C. show controller e1 0/0/0
D. debug isdn q921
E. debug voice dial-peer
Question 3
Which traditional telephony protocol was used as a basis for the H.323 suite of protocols?
A. SS7
B. Q.921
C. Q.931
D. SCCP
Question 4
Which command should you use when checking for phone registration status or verifying button assignments?
A. show ephone
B. show telephony-service
C. show ephone-dn 9
D. show IP phone
Question 5
Which component in the Media Gateway Control Protocol environment is responsible for controlling the operation of the gateways?
A. call agent
B. gatekeeper
C. calling authority
D. gate master
Solutions:
| Question 1 Answer: C | Question 2 Answer: E | Question 3 Answer: C | Question 4 Answer: A | Question 5 Answer: A |
