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Cisco 642-742 Exam Syllabus Topics:

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

1. When a VoWLAN client is in the range of two cells, which two statements describe how the client makes a decision about which cell is the best to associate with? (Choose two.)

A) The client will associate with the cell with the lowest SNR value.
B) The client will associate with the cell broadcasting the highest TSPEC value.
C) The client will associate with the cell broadcasting the highest data rate.
D) The client will associate with the cell broadcasting the lowest mandatory date rate.
E) The client will associate with the first cell that advertises U-APSD.
F) The client will associate with the cell broadcasting the highest 802.11e value.
G) The client will associate with the cell with the highest RSSI value.

2. A support technician is reviewing wireless configurations for a voice network. They notice the off channel scan defer has been set for 4, 5, and 6. What would occur if the technician was to deselect 5 and 6?

A) Wireless clients transmitting at a UP of 5 will cause the access point to cease going off channel to scan.
B) Cameras transmitting with a UP of 4 will cause the access point to go off channel to scan.
C) The access points would go off channel to scan whether there were voice devices transmitting or not.
D) The access points would only go off channel to scan if there were devices transmitting with a UP of 4.

3. A WLC v7.0 is configured for multicast with WLC-to-AP multicast mode using IP address 239.10.10.10, IGMP snooping enabled, and all other parameters set to default. Which two statements describe how a wired ingress broadcast and multicast frame are handled? (Choose two.)

A) WLC will forward a broadcast frame to only APs and their respective WLANs with active clients.
B) WLC will forward the multicast frame to all APs and then to all WLANs.
C) WLC will drop the broadcast frame.
D) WLC will drop the multicast frame.
E) WLC will forward a multicast frame to only APs and their respective WLANs with active clients.
F) WLC will forward the multicast frame to all APs and then to only WLANs with active clients.
G) WLC will forward the broadcast frame to all APs and then to only WLANs with active clients.
H) WLC will forward the broadcast frame to all APs and then to all WLANs.

4. 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) QBSS
B) CCA
C) RSSI
D) 802.11h
E) CHD

5. You have a VoWLAN configured for platinum QoS, WMM, and CAC. IP phones for this VoWLAN include the Nokia and Cisco Unified Wireless IP Phones 7920G (pre-v2.0 firmware), 7921G, and 7925G. The Wireless IP Phones 7921G and 7925G work properly, but the Nokia and the Wireless IP Phones 7920G associate with the WLAN but cannot place calls. What is the issue?

A) HCCA needs to be enabled on the WLAN.
B) The lowest mandatory speed in the WLAN is too high and needs to be reduced.
C) EDCA needs to be enabled on the WLAN.
D) The expedited bandwidth setting needs to be enabled.
E) The reserved roaming bandwidth setting is set too low.
F) The Cisco Unified Wireless IP Phones 7920G and Nokia IP phones do not support TSPEC.

Solutions: