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Cisco 642-437 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Implement Gatekeeper and Cisco Unified Border Element | 12% | - Interoperability and security - CUBE deployment and features - Gatekeeper functions and configuration |
| Topic 2: Implement Voice Gateways | 22% | - Fax and modem support - Dial peers configuration - Analog and digital voice ports - Gateway types and deployment models |
| Topic 3: Describe a Dial Plan | 13% | - Call routing and PSTN connectivity - Dial plan components and functions - Digit manipulation and route patterns |
| Topic 4: Implement QoS for Voice Networks | 15% | - Classification, marking, and policing - QoS principles and requirements - Queuing mechanisms and AutoQoS - Call Admission Control |
| Topic 5: Describe VoIP Call Legs and Signaling | 20% | - Codec selection and media transport - VoIP architecture and call flow - H.323, SIP, and MGCP protocols |
| Topic 6: Implement Cisco Unified Communications Manager Express | 18% | - Basic call features and dial plans - IP phone registration and provisioning - CUCME setup and configuration |
Cisco Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0) Sample Questions:
How many VoIP G.711 calls can be made simultaneously over a 256-kb/s Frame Relay circuit (Layer 3) if cRTP is enabled and the default IOS voice payload size of 160 is used?
- A. 1
- B. 3
- C. 4
- D. 5
Which command correctly enables a trust of the existing differentiated services code point value coming into a switch?
- A. switch(config-if)#mls dscp trust
- B. switch(config-mls)#dscp trust
- C. switch(config-mls)#mls qos trust dscp
- D. switch(config-if)#mls qos trust dscp
Which statement best describes dial peers in a voice gateway. (Choose two.)
- A. Dial peers create physical connections called call legs to complete an end-to-end call.
- B. Dial peers are call legs that are used to identify call source and destination endpoints and to define the characteristics that are applied to each call leg in the call connection.
- C. A dial peer is a physical addressable endpoint in a voice gateway.
- D. Dial peers are configured with call legs that are essential to implementing dial plans and providing voice services over an IP packet network.
Which type of delay is caused by the distance that signal must travel in fiber- or copper-based networks?
- A. propagation delay
- B. handling delay
- C. serialization delay
- D. processing delay
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 VoIP network?
- A. 555
- B. 51234
- C. Null
- D. 1234
- E. 5551234
- F. 5
Leona -
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