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Cisco 642-742 Exam Syllabus Topics:

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

1. Which four statements describe the attributes of streaming video? (Choose four.)

A) QoS marking is at CS4.
B) One-way latency is limited to 150 ms.
C) One-way latency is limited to a few seconds.
D) QoS marking is at AF41.
E) Packet loss is limited to 5 percent.
F) Jitter has no significant requirements.
G) Jitter is limited to 30 ms.
H) Packet loss is limited to 1 percent.

2. After implementing 802.11n SGI in a noisy environment increased interference is noted, at what level would the interference be introduced by the change?

A) symbols
B) headers
C) packets
D) ACKs

3. Which two statements best describe video conferencing? (Choose two.)

A) Video streams require high-speed compression and decompression.
B) Video streams require maximum quality compression and decompression.
C) MPEG codecs are commonly used.
D) H.323 codecs are commonly used.

4. 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 wireless clients as the last reporter.
B) The router IGMP table is updated with the IP address of the Cisco WLC as the last reporter.
C) The IGMP packets from the wireless clients are received at the Cisco WLC, which generates a query for the client.
D) The IGMP packets from the wireless clients are forwarded to the router without modifications.
E) 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.

5. 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 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.
B) 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.
C) 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.
D) 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.

Solutions: