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Cisco 642-742 Exam Syllabus Topics:

SectionObjectives
Topic 1: Wireless Voice Fundamentals- Voice over WLAN concepts
- 802.11 standards and voice considerations
Topic 2: Call Admission Control (CAC)- Bandwidth management for voice sessions
- CAC mechanisms in WLAN environments
Topic 3: Cisco Unified Wireless Architecture- Access point and controller interaction
- Controller-based WLAN design
Topic 4: Voice Deployment and Troubleshooting- VoWLAN deployment best practices
- Common voice quality issues and diagnostics
Topic 5: QoS for Wireless Voice- End-to-end QoS design
- WMM (Wi-Fi Multimedia) and prioritization
Topic 6: Roaming and Mobility- Layer 2 and Layer 3 roaming behavior
- Fast secure roaming (CCKM, 802.11r concepts)

Cisco Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0 Sample Questions:

Question #1

DRAG DROP

Reveal Solution  Discussion  0

Correct Answer:

Question #2

Which mechanism detects if VoWLAN clients are experiencing poor signal-to-noise ratio values and causes the power of APs to increase as needed in order to rectify signal-tonoise issues?

  • A. RSSI
  • B. QBSS
  • C. CHD
  • D. CCA
  • E. 802.11h
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

Question #3

A wired packet that is marked for QoS priority CS4 arrives on VLAN-4 at Cisco WLC v7.0, with a destination of a WLAN SSID-4. The Cisco WLC is configured for the wired and
wireless QoS level of Silver. The infrastructure routers and switches have incorrect QoS configurations. They have mismarked the CAPWAP outer header to a QoS priority EF.
Which statement is true about how the packet is sent from the AP to the final WMM wireless client?

  • A. The AP sends the packet with an 802.11 priority tag of 5 (Gold).
  • B. The AP sends the packet with an 802.11 priority tag of 3 (Silver).
  • C. The AP sends the packet with an 802.11 priority tag of 0 (Best Effort).
  • D. The AP sends the packet with an 802.11 priority tag of 6 (Platinum).
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

Question #4

Which three statements are true about load-based Call Admission Control? (Choose three.)

  • A. uses the 802.11i specifications
  • B. grants a VoWLAN client-initiated call based on the number of active clients associated to the AP
  • C. requires a WMM-enabled client
  • D. grants a VoWLAN client-initiated call based on channel bandwidth capacity
  • E. uses ADDTS action frames
Reveal Solution  Discussion  0

Correct Answer: C,D,E  🗳️

Question #5

A customer is deploying a few remote sites and has decided to use FlexConnect mode for the wireless access points. The customer needs to have seamless roaming for the voice clients at these sites. What two configurations need to be implemented to guarantee roaming? (Choose two)

  • A. OKC/PKC
  • B. CCKM
  • C. FlexConnect Groups
  • D. centrally switched SSIDs
  • E. 802.11r
Reveal Solution  Discussion  0

Correct Answer: B,C  🗳️

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