Download New Latest (May) Cisco 642-742 Actual Tests 21-30

By | May 17, 2015

Ensurepass

 

QUESTION 21

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 22

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 23

Which three statements are true about load-based Call Admission Control? (Choose three.)

 

A.

grants a VoWLAN client-initiated call based on the number of active clients associated to the AP

B.

grants a VoWLAN client-initiated call based on channel bandwidth capacity

C.

uses the 802.11i specifications

D.

uses ADDTS action frames

E.

requires a WMM-enabled client

 

Answer: BDE

 

 

QUESTION 24

Which two items enable WMM to expedite frames from respective traffic categories? (Choose two.)

 

Consistent CWmin and CWmax values

 

Dynamic CWmin and CWmax values

 

A.

AIFS

B.

SIFS

C.

PIFS

D.

DIFS

E.

U-APSD

F.

PS-Poll

 

Answer: BC

 

 

QUESTION 25

When a VoWLAN client is in the range of two cells, which two statements describe how the client makes a decision about which cell is the best to associate with? (Choose two.)

 

A.

The client will associate with the cell with the highest RSSI value.

B.

The client will associate with the cell with the lowest SNR value.

C.

The client will associate with the cell broadcasting the highest 802.11e value.

D.

The client will associate with the cell broadcasting the highest TSPEC value.

E.

The client will associate with the cell broadcasting the lowest mandatory date rate.

F.

The client will associate with the cell broadcasting the highest data rate.

G.

The client will associate with the first cell that advertises U-APSD.

 

Answer: AB

 

 

QUESTION 26

Using proper VoWLAN design practice, what would be a reasonable total number of calls for a pr

operly designed 802.11g cell to ensure call quality?

 

A.

4

B.

7

C.

14

D.

20

E.

25

F.

27

 

Answer: C

 

 

QUESTION 27

What three minimal configurations are required for a correctly scaled multicast configuration using WLC v7.0? (Choose three.)

 

A.

Enable global multicast mode

B.

Enable IGMP snooping

C.

Configure IGMP timeout for 60 seconds

D.

Configure IGMP query interval for 20 seconds

E.

Enable WLAN multicast VLAN feature

F.

Enable AP multicast mode for multicast

G.

Enable AP multicast mode for Unicast

 

Answer: ABF

 

 

QUESTION 28

You are deploying a combination of Cisco Unified Wireless IP Phones 7921G and 7925G at your branch offices in a centralized call processing environment that requires high availability at branch locations. Which three components need to be verified before the wireless IP phones can be deployed? (Choose three.)

 

A.

Sufficient SRST license support at each branch location

B.

Support for local voice mail

C.

Branch gateways support MoH

D.

Properly configured QoS over the IP WAN links

E.

Support for single number reach

F.

Support for E.164 dialing

G.

Sufficient IP phone licenses in the Cisco Unified Communications Manager cluster

 

Answer: ADG

 

 

QUESTION 29

What three changes occur when you replace a legacy 802.11a/b/g Cisco AP with an 802.11a/b/g/n Cisco 3500 Series AP? (Choose three.)

 

A.

increased data rate at reduced distance

B.

increased data rate at same distance

C.

increased data rate at increased distance

D.

benefits in 2.4 GHz only

E.

benefits in 5 GHz only

F.

benefits in both 2.4 and 5 GHz

 

Answer: ABF

 

 

QUESTION 30

You have a VoWLAN configured for platinum QoS, WMM, and CAC. IP phones for this VoWLAN include the Nokia and Cisco Unified Wireless IP Phones 7920G (pre-v2.0 firmware), 7921G, and 7925G. The Wireless IP Phones 7921G and 7925G work properly, but the Nokia and the Wireless IP Phones 7920G associate with the WLAN but cannot place calls. What is the issue?

 

A.

The lowest mandatory speed in the WLAN is too high and needs to be reduced.

B.

The Cisco Unified Wireless IP Phones 7920G and Nokia IP phones do not support TSPEC.

C.

EDCA needs to be enabled on the WLAN.

D.

HCCA needs to be enabled on the WLAN.

E.

The reserved roaming bandwidth setting is set too low.

F.

The expedited bandwidth setting needs to be enabled.

 

Answer: B

 

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