Download New Latest (May) Cisco 642-742 Actual Tests 1-10

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Exam A

 

QUESTION 1

WLC v7.0 is properly configured for 802.11n and multicast video without the optional VideoStream. Which three of these options describe frames sent from the AP to wireless clients? (Choose three.)

 

A.

sent as gold QoS

B.

sent as best effort QoS

C.

sent at highest mandatory rate

D.

sent at lowest mandatory rate

E.

sent at client MCS data rate

F.

ACK per frame

G.

No ACKs

 

Answer: BCG

 

 

QUESTION 2

Refer to the exhibit.

 

clip_image001

 

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

 

A.

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

B.

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

C.

IGMP snooping is disabled.

D.

IGMP snooping is enabled.

E.

VideoStream is allowed for the wireless client.

F.

VideoStream is not allowed for the wireless client.

 

Answer: DE

 

 

QUESTION 3

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 4

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 5

Which of these authentication and encryption combinations would be considered the most secure?

 

A.

LEAP and WPA TKIP

B.

EAP-FAST and WPA2 AES

C.

EAP-FAST and WPA TKIP

D.

WPA-PSK and TKIP

 

Answer: B

 

 

QUESTION 6

Which one of these options best describes the ideal WLAN design for wireless VoIP clients?

 

A.

< font face="Arial">smaller cells with all configurable speeds to ensure that all clients (802.11a/b/g) can associate to the wireless infrastructure

B.

smaller cells with higher speeds and CAC-enabled prioritization of WMM clients

C.

larger cells with higher speeds and WPA2 security enabled to ensure the best possible coverage

D.

smaller cells with APs in the inner areas using omnidirectional antennas, and APs on the outer walls using directional antennas facing inward

 

Answer: B

 

 

QUESTION 7

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 IGMP packets from the wireless clients are forwarded to the router without modifications.

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 received at the WLC and are used to update the router via a Cisco Group Management Protocol update from the Cisco WLC.

E.

The router IGMP table is updated with the IP address of the Cisco WLC as the last reporter.

 

Answer: CE

 

 

QUESTION 8

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

 

A.

Video streams require maximum quality compression and decompression.

B.

Video streams require high-speed compression and decompression.

C.

H.323 codecs are commonly used.

D.

MPEG codecs are commonly used.

 

Answer: BC

 

 

QUESTION 9

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

 

 

QUESTION 10

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

 

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