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Cisco 642-742 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Roaming and Mobility | - Fast secure roaming (CCKM, 802.11r concepts) - Layer 2 and Layer 3 roaming behavior |
| Topic 2: QoS for Wireless Voice | - WMM (Wi-Fi Multimedia) and prioritization - End-to-end QoS design |
| Topic 3: Voice Deployment and Troubleshooting | - VoWLAN deployment best practices - Common voice quality issues and diagnostics |
| Topic 4: Cisco Unified Wireless Architecture | - Controller-based WLAN design - Access point and controller interaction |
| Topic 5: Wireless Voice Fundamentals | - Voice over WLAN concepts - 802.11 standards and voice considerations |
| Topic 6: Call Admission Control (CAC) | - Bandwidth management for voice sessions - CAC mechanisms in WLAN environments |
Cisco Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0 Sample Questions:
Which three statements are true about load-based Call Admission Control? (Choose three.)
- A. grants a VoWLAN client-initiated call based on channel bandwidth capacity
- B. uses the 802.11i specifications
- C. grants a VoWLAN client-initiated call based on the number of active clients associated to the AP
- D. uses ADDTS action frames
- E. requires a WMM-enabled client
Correct Answer: A,D,E 🗳️
What is the recommended minimum speed at the edge of the cells in an 802.11g network for a good Cisco VoWLAN deployment?
- A. 12 Mb/s
- B. 11 Mb/s
- C. 36 Mb/s
- D. 54 Mb/s
- E. 18 Mb/s
Correct Answer: A 🗳️
You are deploying a combination of Cisco Unified Wireless IP Phones 7921G and 7925G at your branch offices in a centralized call processing environment that requires high availability at branch locations. Which three components need to be verified before the wireless IP phones can be deployed? (Choose three.)
- A. Sufficient SRST license support at each branch location
- B. Support for single number reach
- C. Support for E.164 dialing
- D. Branch gateways support MoH
- E. Sufficient IP phone licenses in the Cisco Unified Communications Manager cluster
- F. Properly configured QoS over the IP WAN links
- G. Support for local voice mail
Correct Answer: A,E,F 🗳️
Which two statements best describe streaming video? (Choose two.)
- A. MPEG codecs are commonly used.
- B. Video streams require a high speed of compression only.
- C. Video streams require maximum quality compression and decompression.
- D. H.323 codecs are commonly used.
Correct Answer: A,C 🗳️
Which statement describes the benefit of WMM U-APSD over legacy 802.11 power-save mode?
- A. Client sleep mode is scheduled by AP to reduce jitter.
- B. Client can burst data without standard interframe spacing.
- C. Client can burst data without ACKs.
- D. Client no longer sends null frame to notify of sleep mode.
Correct Answer: B 🗳️
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