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Cisco 642-437 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Implement QoS for Voice Networks | 15% | - Queuing mechanisms and AutoQoS - Classification, marking, and policing - Call Admission Control - QoS principles and requirements |
| Implement Gatekeeper and Cisco Unified Border Element | 12% | - Interoperability and security - CUBE deployment and features - Gatekeeper functions and configuration |
| Implement Cisco Unified Communications Manager Express | 18% | - IP phone registration and provisioning - Basic call features and dial plans - CUCME setup and configuration |
| Describe VoIP Call Legs and Signaling | 20% | - Codec selection and media transport - H.323, SIP, and MGCP protocols - VoIP architecture and call flow |
| Implement Voice Gateways | 22% | - Gateway types and deployment models - Dial peers configuration - Analog and digital voice ports - Fax and modem support |
| Describe a Dial Plan | 13% | - Call routing and PSTN connectivity - Digit manipulation and route patterns - Dial plan components and functions |
Cisco Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0) Sample Questions:
DRAG DROP
Drag the components from the left and drop them under the appropriate categories on the right.
Cisco 642-437 Exam
Correct Answer:
Explanation:
DSP delay, Packetization delay, Serialization delay & Dejitter Buffer delay are Fixed delay types. Queuing and Buffering delay & Network delay are Variable Delay types.
http://www.cisco.com/en/US/tech/tk652/tk698/technologies_white_paper09186a00800a8993.shtml
Fixed Delay DSP Delay Serialization Delay Dejitter Buffer Delay Processing Delay
Variable Delay Network Delay Queuing Delay
What is the Cisco-recommended network requirement for voice and video?
- A. packet loss of 1 percent or less
- B. Cisco AutoQoS
- C. -6 on gateway attenuation
- D. over 3.0 megabytes circuit
Correct Answer: A 🗳️
What are the three acceptable values for one-way delay, jitter, and packet loss in a VoIP network? (Choose three.)
- A. 1 packet loss
- B. 20 ms for jitter
- C. 1 percent packet loss
- D. 0-400 ms for delay
- E. 30 ms for jitter
- F. 0-150 ms for delay
Correct Answer: C,E,F 🗳️
Explanation: Only visible for PassCollection members. You can sign-up / login (it's free).
Which codec complexity type allows medium-complexity codecs to be run in high-complexity mode, but with fewer (usually approximately half) of the channels available per DSP?
- A. flex complexity
- B. medium complexity
- C. high complexity
- D. low complexity
Correct Answer: B 🗳️
Which command should you use to configure a T1 CAS trunk to use the most reliable line coding technique?
- A. linecoding b8zs
- B. linecode ami
- C. linecoding ami
- D. linecode b8zs
Correct Answer: D 🗳️
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