Download New Latest (May) Cisco 642-742 Actual Tests 31-40

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QUESTION 31

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

 

 

QUESTION 32

What is the main difference between the Cisco Unified Wireless IP Phones 7921G and 7925G?

 

A.

The 7925G supports 802.11a/b/g, whereas the 7921G supports only 802.11b/g.

B.

The 7925G is suited for a more rugged environment.

C.

The 7925G has support for 802.11n, whereas the 7921G does not.

D.

7925G supports WPA2, whereas the 7921G supports only WPA1.

 

Answer: B

 

 

QUESTION 33

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 34

A small wireless controller-based network is installed and configured inside a corporate building using Cisco 2500 Series controllers and 3500 Series APs using local, monitor, and rogue detector modes. All wireless clients have been working and now require multicast applications. WLC multicast is configured using multicast mode with IP address 239.10.10.10 and other parameters set to default. However, the wireless multicast traffic has limited success and does not work throughout the corporate building. What three actions can help resolve the problems? (Choose three.)

 

A.

Enable WLC IGMP snooping.

B.

Change WLC from multicast mode to Unicast mode in case of wired multicast infrastructure issues.

C.

Verify router and switch multicast configurations.

D.

Change all APs to just local and rogue detector modes.

E.

Change all APs to local mode and monitor mode.

F.

Change all APs to local mode.

G.

Increase the WLC-to-AP multicast QoS marking.

H.

Verify IP address and port used by the multicast application.

 

Answer: CFH

 

 

QUESTION 35

Refer to the exhibit.

 

 

 

clip_image001

 

What three items of multicast information can be interpreted from the WLC displays? (Choose three.)

 

A.

WLC-to-AP multicast mode is configured for unicast.

B.

WLC-to-AP multicast mode is configured for multicast using IP address 239.1.1.1.

C.

The ingress WLC multicast stream is IP address 239.1.1.1.

D.

VideoStream is allowed for the wireless client.

E.

VideoStream is not allowed for the wireless client.

F.

IGMP snooping is enabled.

G.

IGMP snooping is disabled.

H.

QoS was configured and lowered to best effort.

 

Answer: CEF

 

 

QUESTION 36

Refer to the exhibit.

 

 

 

clip_image002

 

Which three statements describe the WLC configuration? (Choose three.)

 

A.

CAC values are relatively high.

B.

CAC values are relatively low.

C.

It enables QBSS, given other appropriate configurations.

D.

It enables TSPEC, given other appropriate configurations.

E.

It applies to platinum QoS.

F.

It applies to platinum and gold QoS.

 

Answer: ADE

 

 

QUESTION 37

Which two multicast modes are valid for use with Ethernet bridging on a mesh AP? (Choose two.)

 

A.

mesh bridge in

B.< /p>

regular

C.

bidirectional bridge

D.

in

E.

out

 

Answer: BD

 

 

QUESTION 38

DRAG DROP

 

 

 

clip_image003

Answer:

clip_image004

 

A.

 

B.

 

C.

 

D.

 

 

Answer:

 

 

QUESTION 39

You have recently added Cisco Unified Wireless IP Phones 7921G and 7925G to your branch office. The new wireless and wired IP phones are experiencing poor call quality when receiving calls across the IP WAN from the remote HQ. What is the most likely issue?

 

A.

The Cisco Unified Communications Manager bandwidth for the IP WAN link is not properly configured and is allowing more calls than the link can accommodate.

B.

The Cisco Unified Communications Manager bandwidth settings have not been increased to support the new wireless IP phones.

C.

The Cisco Unified Communications Manager bandwidth is set too low, resulting in poor call quality.

D.

The Cisco Unified Communications Manager gatekeeper-controlled CAC has been set too low, resulting in poor call quality.

 

Answer: A

 

 

QUESTION 40

DRAG DROP

 

clip_image005

Answer:

clip_image006

 

A.

 

B.

 

C.

 

D.

 

 

Answer:

 

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