Get all latest (August) Cisco 640-722 Actual Test 21-30

Ensurepass

 

QUESTION 21

Which two actions are best for deploying VoWLAN on a wireless network? (Choose two.)

 

A.

Minimize the use of Class 3 Bluetooth devices.

B.

Minimize the use of analog cameras.

C.

Minimize the use of IP cameras.

D.

Maximize client access by enabling all data rates used by clients.

E.

Maximize client access by enabling only a few high data rates used by clients.

 

Correct Answer: BE

 

 

QUESTION 22

What are three characteristics of the 802.11g standard? (Choose three.)

 

A.

speed of as much as 11 Mb/s

B.

speed of as much as 54 Mb/s

C.

backward-compatibility with 802.11a

D.

backward-compatibility with 802.11b

E.

OFDM as an additional modulation technique

F.

OFDM and CCK as additional modulation techniques

 

Correct Answer: BDE

 

 

QUESTION 23

Which device divides a signal between two antennas?

 

A.

splitter

B.

lightening arrestor

C.

attenuator

D.

amplifier

 

Correct Answer: A

 

 

QUESTION 24

Which statement about an infrastructure basic service set is true according to IEEE 802.11 specifications?

 

A.

The set also is called an ad hoc network.

B.

The BSSID is generated from the first wireless client that starts up in the IBSS.

C.

The set enables the use of ESS.

D.

No signals are relayed from one client to another client.

 

Correct Answer: C

 

 

QUESTION 25

How does an LWAP receive a configuration file?

 

A.

It is configured manually.

B.

It receives a configuration from the controller.

C.

It automatically ships with a configuration.

D.

It receives a configuration from a TFTP server.

 

Correct Answer: B

 

 

QUESTION 26

Which three items do you need to establish a wireless connection to an enterprise wireless network? (Choose three.)

 

A.

SSID name

B.

RF channel

C.

RF signal

D.

802.1X/EAP credentials

E.

pre-shared key

F.

web page

G.

WPA/WPA2 settings

 

Correct Answer: ACD

QUESTION 27

What is the difference between the IEEE, the WiFi Alliance, and the FCC, ETSI, and TELEC?

 

A.

The IEEE and FCC are responsible for the standards that apply to wireless networks. The WiFi Alliance, ETSI, and TELEC are the governmental agencies that regulate compliance with local standards.

B.

The IEEE is responsible for Layer 1 and Layer 2 protocols. The WiFi Alliance is responsible for interoperability testing. The FCC, ETSI, and TELEC are responsible for radio frequency and transmission power-level regulations and standards in the U.S., Europe, and Japan.

C.

The IEEE is responsible for Layer 1 and Layer 2 protocols. The FCC, ETSI, and TELEC are responsible for interoperability testing and compliance. The WiFi Alliance is responsible for radio frequency and transmission power-level regulations and standards on a global basis.

D.

The IEEE and FCC are responsible for the Layer 3 protocol support and frequency and power-level regulations in the United States. ETSI and TELEC are responsible for frequency and power-level regulations in Europe and Japan. The WiFi Alliance is responsible to interoperability testing.

 

Correct Answer: B

 

 

QUESTION 28

Which two statements about beacon frames used by access points are true? (Choose two.)

 

A.

They contain SSIDs if this feature is enabled.

B.

They provide vendor proprietary information.

C.

They are another name for an associated request.

D.

They are sent in response to a probe frame.

E.

They include ATIM window information for power save operations.

 

Correct Answer: AB

 

 

QUESTION 29

Which type of frames are ACK and CF-ACK?

 

A.

control

B.

management

C.

RTS/CTS

D.

association

 

Correct Answer: A

 

 

QUESTION 30

Which two wireless technologies can interfere with 802.11 networks? (Choose two.)

 

A.

DECT

B.

ZigBee

C.

WiMax

D.

GSM

 

Correct Answer: AB

 

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