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Passed Cisco 642-742 Exam with Pass4sure and Lead2pass PDF & VCE (21-30)



QUESTION 21

Which two pieces of information from the Cisco WLC v7.0 GUI does Monitor > Clients provide about a VoWLAN client? (Choose two.)

A.    RSSI at current AP

B.    WMM state

C.    current MOS

D.    current RF channel

E.    current data rate

Answer: AB

QUESTION 22

What are two benefits that result from Cisco WLC configuration of DCA for 5-GHz VoWLAN deployments? (Choose two.)

A.    Avoid channels that are affected by a microwave oven

B.    Manually remove channels that are not supported by VoWLAN clients

C.    Avoid 802.11n 40-MHz channels

D.    Avoid nearby radar

E.    Adjust RRM power thresholds

Answer: BD

QUESTION 23

What is the best practice for configuring data rates for an 802.11a VoWLAN deployment?

A.    Configure mandatory data rates of 9 and 54 Mb/s. Disable data rates below 6 Mb/s and all other data rates as supported.

B.    Configure a mandatory data rate of 6 Mb/s. Disable data rates below 6 Mb/s and configure all other data rates as supported.

C.    Configure a mandatory data rate of 54 Mb/s. Disable data rates below 36 Mb/s and configure all other data rates as supported.

D.    Configure a mandatory data rate of 12 Mb/s. Disable data rates below 12 Mb/s and all other data rates as supported.

Answer: D

QUESTION 24

What is the best practice for configuring data rates for an 802.11b VoWLAN deployment?

A.    Configure mandatory data rates of 11 and 54 Mb/s. Disable data rates below 6 Mb/s and all other data rates as supported.

B.    Configure a mandatory data rate of 6 Mb/s. Disable data rates below 6 Mb/s and configure all other data rates as supported.

C.    Configure a mandatory data rate of 11 Mb/s. Disable data rates below 11 Mb/s and all other data rates as supported.

D.    Configure a mandatory data rate of 12 Mb/s. Disable data rates below 12 Mb/s and all other

data rates as supported.

Answer: C

QUESTION 25

What is the best practice for setting the WLC v7.0 use of WLAN QoS settings to support SIP phones on a VoWLAN?

A.    Configure SIP with static CAC only with SIP call snooping.

B.    Configure SIP with static CAC only without SIP call snooping.

C.    Configure SIP with load-based CAC only with SIP call snooping.

D.    Configure SIP with load-based CAC only without SIP call snooping.

E.    Configure SIP with load-based CAC and TSPEC only with SIP call snooping.

Answer: A

QUESTION 26

Which three call information items does AirMagnet VoFi Analyzer provide? (Choose three.)

A.    the codec used by the calling phone

B.    approximate length of the call in minutes

C.    MOS values throughout the duration of the call

D.    802.11e access category overruns

E.    co-channel interference percentage during the call

Answer: ABC

QUESTION 27

Which WCS tool will be especially helpful to ensure that all VoWLAN configurations are consistent across all controllers?

A.    Inspect VoWLAN Readiness

B.    Traffic Stream Metrics

C.    Voice Audit Report

D.    Voice Diagnostic

E.    Monitor Client Detail

Answer: C

QUESTION 28

What are the benefits from enabling TSM for a VoWLAN using a WLC v7.0?

A.    provides packet loss and latency covering the end-to-end voice path on all links

B.    provides packet loss and latency covering the end-to-end voice path on all links and additional parameters on the VoWLAN segment

C.    provides packet loss covering the end-to-end voice path on all links and additional parameters on VoWLAN segment

D.    provides packet loss, latency, and additional parameters on VoWLAN call segment

Answer: D

QUESTION 29

Refer to the exhibit. Which two statements describe information that you can derive from the WCS v7.0 output from the Monitor Client Detail? (Choose two.)

image

A.    Comparing the RSSI and SNR can provide specific information on where the client has roamed and if there is a problem with one or more AP configurations.

B.    Comparing the information to the location of the client can provide the first hint of voice-related issues.

C.    If the parameters are consistently good, then voice-related issues being reported by users are probably not related to RF parameters.

D.    Comparing the RSSI and SNR can provide specific information on QoS performance in the VoWLAN.

E.    Comparing the RSSI and SNR can provide specific information on the relative distance of the client from the AP during a call.

Answer: BC

QUESTION 30

A downstream packet containing a DSCP value arrives at the WLC Ethernet interface from the wired source network. The WLC is configured for QoS WLAN 802.1p mapping. How does the WLC treat the CAPWAP QoS marking when leaving the controller interface for the respective AP and final wireless client destination?

A.    No outer CAPWAP or inner QoS tagging is applied.

B.    No outer CAPWAP QoS tag is applied, but the original DSCP is maintained inside CAPWAP.

C.    The outer CAPWAP CoS is marked and capped while the inner DSCP maintains the original marking.

D.    The outer CAPWAP DHCP is marked and capped without any inner DSCP value.

Answer: C

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Post date: 2014-04-04 05:41:06
Post date GMT: 2014-04-04 05:41:06
Post modified date: 2014-05-28 08:39:57
Post modified date GMT: 2014-05-28 08:39:57

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