[Free] Download Latest (May 2016) Cisco 642-742 Real Exam 1-10

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QUESTION 1

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

 

Correct Answer: B

 

 

QUESTION 2

What is the recommended minimum speed at the edge of the cells in an 802.11g network for a good Cisco VoWLAN deployment?

 

A.

11 Mb/s

B.

12 Mb/s

C.

18 Mb/s

D.

36 Mb/s

E.

54 Mb/s

 

Correct Answer: B

 

 

QUESTION 3

What protocol can be enabled to listen in on IPv4 multicast streams and maintain a map of what each client requests on a wireless LAN controller?

 

A.

IGMP

B.

MLD

C.

PAP

D.

ICMP

E.

SIP

F.

NTP

 

Correct Answer: A

 

 

QUESTION 4

A trouble ticket has been turned in for a voice over wireless deployment. The customer cannot edit network profiles on their 7925 series phones and states that the profiles are locked. What key combination will unlock the profiles for editing?

 

A.

**#

B.

**#**

C.

**#123

D.

123456789*0#

 

Correct Answer: A

 

 

QUESTION 5

Refer to the exhibit. Voice bearer traffic is being sent downstream using a WLAN configured for gold QoS. Which two of these options indicate the inner 802.11e QoS markings and QoS CAPWAP markings that are used at location 1? (Choose two.)

 

clip_image002

 

A.

Inner 802.11e: UP 6

B.

Outer CAPWAP: DSCP EF and CoS 5

C.

Outer CAPWAP: DSCP 46 and CoS 4

D.

Inner 802.11e: UP 3

E.

Outer CAPWAP: DSCP AF31 and CoS 3

F.

Outer CAPWAP: DSCP AF41 and CoS 4

G.

Outer CAPWAP: CoS 5

H.

Inner 802.11e: UP 5

 

Correct Answer: CH

 

 

QUESTION 6

Refer to the exhibit. Which two statements describe the WLC configuration? (Choose two.)

 

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A.

AP will effectively allow 75% of bandwidth for local new calls.

B.

AP will effectively allow 69% of bandwidth for local new calls.

C.

AP will effectively allow 81% of bandwidth for local new calls.

D.

Priority roaming calls can be expedited.

E.

Priority new calls can be expedited.

 

Correct Answer: BE

 

 

QUESTION 7

Which three WLC actions are required to properly enable queuing with TSPEC for voice traffic? (Choose three.)

 

A.

configure WLAN setting to enable WMM

B.

configure WLAN Aironet information elements to enabled

C.

configure global 802.11b/g or 802.11a, or both, to voice CAC

D.

configure WLAN platinum QoS

E.

configure DTIM = 2

 

Correct Answer: ACD

 

 

QUESTION 8

Refer to the exhibit. A controller has been completely configured to support high definition video over wireless. During the testing phase, a packet capture shows the video-stream traffic on the wire as best effort. What needs to be changed in the configuration to support QoS tags properly?

 

clip_image005

 

A.

add the line mls qos trust cos

B.

add the line mls qos trust dscp

C.

add the line priority queue in

D.

add the line mls qos trust device wlc

 

Correct Answer: A

 

 

QUESTION 9

A wireless network needs for QoS to be mapped end-to-end to provide reliability for network applications. What two port configurations and QoS markings should be utilized for the switch to accept the APs tags? (Choose two.)

 

A.

For a local mode AP, the switchport should be configured as an access port trusting the DSCP tag from the AP.

B.

The switch should have MLS QoS enabled with all uplink and downlink ports configured to trust CoS tags. All uplink switches need to trust the CoS tags.

C.

The switch should have MLS QoS enabled with all uplink and downlink ports configured to trust DSCP tags. All uplink switches need to trust the DSCP tags as well.

D.

For a local mode AP, the switchport should be configured as an access port trusting the CoS tag from the AP.

E.

For a local mode AP the switchport should be configured as a trunk port trusting both DSCP or CoS tags from the AP.

 

Correct Answer: AB

 

 

QUESTION 10

Refer to the exhibit. A customer is looking to deploy local radius authentication on their WLAN controller. After configuration has been completed, the administrator found that computers could authenticate; however, the VoIP phones could not. What is the problem given the output?

 

clip_image007

 

A.

The EAP request-timeout is too short for the wireless phone to process the PAC from the WLAN controller.

B.

The EAP Broadcast Key interval is set to 1 hour however should be 8 hours.

C.

EAPOL-Key Max Retries should be set to 12 to ensure the wireless phone can authenticate.

D.

EAPOL-Key timeout should be set to at least 20,000 Milliseconds to allow the PAC to be processed.

 

Correct Answer: A

 

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