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Cisco 642-437 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Signaling and Call Control | - Dial plans and call routing - SIP, H.323, and MGCP protocols - Gateways and gatekeepers |
| Topic 2: Quality of Service (QoS) | - QoS models and mechanisms - Queuing techniques and bandwidth management - Congestion management and avoidance - Traffic classification and marking |
| Topic 3: Troubleshooting and Operations | - Common VoIP deployment issues - Voice and QoS troubleshooting methodologies |
| Topic 4: Call Admission Control and Performance | - Call admission control mechanisms - Voice network performance considerations |
| Topic 5: VoIP Fundamentals | - Voice codecs and compression techniques - Voice over IP architecture and components - Voice traffic signaling basics |
Cisco Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0) Sample Questions:
What is the total bandwidth per call in a link, if you use a G.729 (high-complexity codec) with a 40byte sample and Frame Relay with cRTP?
- A. 19,200
- B. 11,200
- C. 9,600
- D. 7,420
Which voice quality issue is described as voice clipping or skips?
- A. packet loss
- B. serialization delay
- C. fixed delay
- D. DSP delay
- E. propagation delay
- F. jitter
Which traditional telephony protocol was used as a basis for the H.323 suite of protocols?
- A. SCCP
- B. SS7
- C. Q.931
- D. Q.921
Which WAN connection speeds are recommended for using link fragmentation and interleaving?
- A. speeds between 64 and 512
- B. speeds between 512 and 768
- C. speeds at 768 and lower
- D. speeds at T1 and below
Which three methods are used by a Cisco Unified Border Element to provide network hiding? (Choose three.)
- A. Intelligent IP address translation for RTP flows
- B. RSVP
- C. IP network privacy
- D. Back-to-back user agent, replacing all SIP-embedded IP addressing
- E. media flow-through
- F. IP network security boundary
