Cisco 642-742 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Wireless Voice Fundamentals | - Voice over WLAN concepts - 802.11 standards and voice considerations |
| Voice Deployment and Troubleshooting | - VoWLAN deployment best practices - Common voice quality issues and diagnostics |
| Roaming and Mobility | - Layer 2 and Layer 3 roaming behavior - Fast secure roaming (CCKM, 802.11r concepts) |
| Call Admission Control (CAC) | - Bandwidth management for voice sessions - CAC mechanisms in WLAN environments |
| Cisco Unified Wireless Architecture | - Access point and controller interaction - Controller-based WLAN design |
| QoS for Wireless Voice | - End-to-end QoS design - WMM (Wi-Fi Multimedia) and prioritization |
Cisco Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0 Sample Questions:
Question #1
What is the minimum overhead (header plus FCS) added by 802.11 (no encryption, no WMM) between a wireless client and an AP?
A. 24 B
B. 28 B
C. 35 B
D. 48 B
E. 36 B
F. 18 B
Question #2
Which two statements are correct if IGMP snooping is enabled on a Cisco WLC v7.0? (Choose two.)
A. The router IGMP table is updated with the IP address of the Cisco WLC as the last reporter.
B. The router IGMP table is updated with the IP address of the wireless clients as the last reporter.
C. The IGMP packets from the wireless clients are forwarded to the router without modifications.
D. The IGMP packets from the wireless clients are received at the WLC and are used to update the router via a Cisco Group Management Protocol update from the Cisco WLC.
E. The IGMP packets from the wireless clients are received at the Cisco WLC, which generates a query for the client.
Question #3
Which statement best describes Cisco Centralized Key Management?
A. It allows the wireless client to cache information from surrounding APs to reduce scan time before roaming.
B. It allows the wireless infrastructure to cache the credentials to eliminate the need for a full reauthentication when roaming.
C. It allows controllers to send a directed roam request to a wireless client when a different AP can service the client better.
D. It allows wireless clients to cache their credentials to prevent any reauthentication to the wireless infrastructure during a roaming event.
Question #4
Which two statements describe the capability of TSM to collect statistics that are related to VoWLAN on Cisco WLC v7.0? (Choose two.)
A. It is operational on both 802.11g/b/n and 802.11a/g radio.
B. It requires Cisco Compatible Extensions clients for uplink statistics only.
C. It requires Cisco Compatible Extensions clients for uplink and downlink statistics.
D. The feature is enabled by default.
E. It is operational only on 802.11a/n radio.
Question #5
A wireless customer has called with a problem regarding voice calls. When a person is put on hold, there is silence and the music on hold does not come across. What is a requirement of music on hold?
A. There needs to be multicast routing configured network wide from the access point to the wireless controller.
B. The wireless voice network needs to be configured for a QoS of platinum to permit the multicast traffic.
C. The music on hold's multicast address needs to be configured for multicast direct.
D. Multicast routing should be configured at least to the wireless controller and client dynamic interfaces.
Solutions:
| Question #1 Correct Answer: B | Question #2 Correct Answer: A,E | Question #3 Correct Answer: B | Question #4 Correct Answer: A,B | Question #5 Correct Answer: D |
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