Cisco CCNP Wireless 642-742

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

1. During the testing and verification phase of an 802.11n deployment, an employee wants to be able to stream video at a much faster rate than the previous 802.11a/b/g deployment. What 802.11n capability can be utilized for this?

A) Clients can utilize ClientLink which allows them to use the signal received from 802.11n access points on its various radio chains to perform multi-ratio combining.
B) Clients are able to utilize High-Rate Direct Sequence Spread Spectrum (HR-DSSS) to reach higher data-rates, which in turn allow for much faster video streaming.
C) Clients can make use of MIMO to aggregate the data sent from the access points whether 802.11n or 802.11a to create a higher throughput network.
D) Access points and clients are capable of utilizing spatial-multiplexing, multi-ratio combining, and transmit beamforming, which allows for a more efficient wireless spectrum that can utilize higher data-rates.

2. Your Cisco Unified Wireless IP Phones 7921G and 7925G are associated with the VoWLAN at your branch office. When they attempt to place a call, the call fails to go through and you receive a fast busy tone. What is the issue?

A) The local gateway rejected the call because of high IP WAN utilization.
B) The wireless phones failed to register with the Cisco Unified Communications Manager cluster.
C) The Cisco Unified Communications Manager cluster invoked CAC to preserve IP WAN voice bandwidth.
D) Automatic alternate routing has been invoked.

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

4. A company is deploying multicast over wireless that needs to be in a multicast-multicast mode. The access points are not receiving multicast traffic from the wireless controller. What command would display the needed information to determine if the AP has joined the multicast group?

A) show ip igmp groups
B) show ip route
C) show ip mroute
D) show ip multicast routing
E) show igmp routes
F) show pim multicast

5. A corporation has a Cisco Unified Wireless Network that has been deployed for voice coverage. The wireless data rates have been tuned to mandatory rates of 18 Mbps and 36 Mbps. Some wireless clients have been experiencing drops streaming multicast video while moving throughout the building. What is the cause of the drop in video?

A) Clients are roaming at lower data rates and are not maintaining 36Mbps connectivity.
B) Clients are connected at 18Mbps; however, other clients are connecting at 12Mbps and are causing the multicast video to degrade.
C) Clients are maintaining a 12Mbps rate and cannot receive the stream at 18Mbps.
D) Clients are not roaming due to coverage. This is causing the multicast data to drop due to the client re-associating often.

Solutions: