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Cisco 642-742 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Voice Deployment and Troubleshooting | - Common voice quality issues and diagnostics - VoWLAN deployment best practices |
| Topic 2: Cisco Unified Wireless Architecture | - Access point and controller interaction - Controller-based WLAN design |
| Topic 3: QoS for Wireless Voice | - End-to-end QoS design - WMM (Wi-Fi Multimedia) and prioritization |
| Topic 4: Roaming and Mobility | - Fast secure roaming (CCKM, 802.11r concepts) - Layer 2 and Layer 3 roaming behavior |
| Topic 5: Wireless Voice Fundamentals | - 802.11 standards and voice considerations - Voice over WLAN concepts |
| 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:
1. When implementing video teleconferencing over a wireless network, which three attributes should be considered when cell planning? (Choose three.)
A) number of users on the network
B) packet loss
C) client association
D) latency
E) jitter
F) throughput
2. Clients are experiencing artifacts in multicast video even though the network was recently upgraded to 802.11n APs. What three configuration changes will be most effective to improve performance? (Choose three.)
A) enable Call Admission Control
B) increase mandatory data rate
C) enable 40 MHz wide channels
D) disable Multicast Messaging
E) increase QoS marking on multicast
F) enable VideoStream
3. You have two packets with decimal ToS values of 32 and 34. What are their results, respectively, in an IP precedence-only device?
A) The packet with the decimal value of 34 has an IP precedence tag of CS4, while the other decimal value of 32 is ignored and treated as best effort.
B) Both packets have a decimal value that results in an IP precedence tag of CS4.
C) The packet with the decimal value of 32 has an IP precedence tag of CS4, while the other decimal value of 34 is ignored and treated as best effort.
D) Both packets have an IP precedence tag of CS4, and the packet with the decimal value of 34 has a higher drop probability.
4. When calculating bandwidth usage for an application, what two values represent the minimum and maximum 802.11 overhead per frame? (Choose two.)
A) 48 bytes
B) 64 bytes
C) 16 bytes
D) 60 bytes
E) 28 bytes
F) 56 bytes
G) 24 bytes
5. An engineer has been assigned the task of deciding the cell overlap for a wireless voice deployment. Which Cisco measurement recommendation should be considered?
A) The measurement should be done on the 2.4-GHz band.
B) The edge of the cell should be -67 dBm.
C) The edge of the cell should be below 35 RSSI.
D) One AP should be deployed per 3000 square feet.
Solutions:
| Question # 1 Answer: B,D,E | Question # 2 Answer: A,C,F | Question # 3 Answer: B | Question # 4 Answer: D,E | Question # 5 Answer: B |
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