QUESTION 11
A VoWLAN site survey was performed and equipment installed based on recommended design guidelines. Which two statements describe reasons to perform a post-deployment survey? (Choose two.)

A.    There is insufficient information about the number of people in the area when the survey is performed.
B.    There is insufficient information by AirMagnet VoFi Analyzer.
C.    There are elevator shafts.
D.    There are roaming pathways.
E.    There are changes in temperature in the indoor environment.

Answer: AD

QUESTION 12
Which attribute does the VoWLAN Readiness Tool of WCS v7.0 use to predict acceptable conditions?

A.    SNR
B.    RSSI
C.    PER
D.    WMM
E.    QBSS

Answer: B

QUESTION 13
Which statement is NOT a key QoS recommended requirement for voice bearer traffic?

A.    Voice traffic should be marked to DSCP EF per the QoS baseline and RFC3246.
B.    Voice traffic loss should be no more than 3%.
C.    One-way latency (mouth-to-ear) should be less than 150 msec.
D.    Average one way jitter should be targeted to less than 30 msec.
E.    21-320 Kbps of guaranteed priority bandwidth is required per call depending on sample rate, codec, and layer 2 overhead.

Answer: B

QUESTION 14
Which two statements correctly describe a Cisco WLC configuration of Wireless > QoS > Profiles > Wired_QoS_Profiles for an implementation of DSCP or CoS deployment? (Choose two.)

A.    It must always be set on all QoS profile types because this sets the type of markings as either CoS or DSCP.
B.    It is optional if the Cisco WLC attached switch operates on a trust DSCP model.
C.    It must be set if the Cisco WLC attached switch operates on a trust CoS model.
D.    It sets the EDCF queue used for the radio-transmitted frames.

Answer: BC

QUESTION 15
What will improve the battery life of a Cisco Unified Wireless IP Phone 7921G?

A.    configuring phone to auto select network
B.    configuring beacon period to 80 ms
C.    configuring DTIM period to 2
D.    enabling RRM

Answer: C

QUESTION 16
Which two Cisco components are required to extend an existing VoWLAN to dual-mode wireless phones? (Choose two.)

A.    An LDAP server for the WLAN
B.    Cisco Unified Mobile Communicator
C.    Cisco Unified Mobility Advantage client
D.    Cisco Unified Mobility Advantage
E.    Cisco Unified Communications Manager
F.    A RADIUS server for the WLAN

Answer: BD

QUESTION 17
A web browser is opened to a new Cisco Unified Wireless IP Phone 7921G or 7925G connected to a windows computer via USB. Which statement describes the ability to read and write configuration parameters to prime the phone for its first VoWLAN association and its association to a Cisco Unified Communications Manager?

A.    Phones are always read-only.
B.    Phones are read-only and require user to be authenticated as administrator for write access.
C.    Phone read/write access depends on the firmware version.
D.    Phone depends on Cisco Unified Communications Manager configuration.

Answer: C

QUESTION 18
Which DHCP option is used by Vocera badges to reach a Cisco Unified Communications Manager?

A.    Set the option to 66.
B.    Set the option to 43.
C.    Set the option to 150.
D.    No option is required.

Answer: D

QUESTION 19
When a Vocera badge performs a broadcast call in a properly configured VoWLAN using WLC v7.0, which two choices indicate how the QoS is marked? (Choose two.)

A.    Upstream marked as Best Effort.
B.    Upstream marked as ToS CS4.
C.    Upstream marked as DSCP EF.
D.    Downstream marked as DSCP EF.
E.    Downstream marked as Best Effort.
F.    Downstream marked as Silver.

Answer: CE

QUESTION 20
When designing the coverage area for high call capacity, what two actions should you take with data rates and channels? (Choose two.)

A.    Avoid channels with high AP co-channel interference.
B.    Use channels with high AP co-channel interference to avoid channel roaming.
C.    Set the 2.4-GHz data rate of 5.5 Mb/s to required.
D.    Use 5-GHz channels when possible.
E.    Use 2.4-GHz channels when possible.

Answer: AD

If you want to pass Cisco 642-742 successfully, donot missing to read latest lead2pass Cisco 642-742 exam questions.
If you can master all lead2pass questions you will able to pass 100% guaranteed.

http://www.lead2pass.com/642-742.html