[Free] New Updated (October) Cisco 640-722 Real Exam 41-50

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QUESTION 41

The IEEE 802.11n standard provides 40-MHz channels, improved MAC efficiency, and MIMO. Which three elements define the 802.11n implementation of MIMO? (Choose three.)

 

A.

channel bonding

B.

dynamic frequency selection

C.

maximal ratio combining

D.

packet aggregation

E.

spatial multiplexing

F.

transmit beam forming

 

Correct Answer: CEF

 

 

QUESTION 42

You are setting up a laptop to connect to the wireless network of your organization. The protocols that are used for the corporate network are WPA2 Enterprise, PEAP, and AES. Which three parameters do you need to configure in the Windows 7 wireless network properties for this connection? (Choose three.)

 

A.

VLAN

B.

encryption type

C.

authentication method

D.

VRF

E.

security type

F.

IP address

 

Correct Answer: BCE

QUESTION 43

Which governing body analyzes the applications and environments in which wireless networks are used?

 

A.

EIRP

B.

ETSI

C.

FCC

D.

IEEE

E.

WiFi Alliance

 

Correct Answer: D

 

 

QUESTION 44

Which two algorithms are available in RRM? (Choose two.)

 

A.

coverage-hole detection

B.

dynamic channel assignment

C.

RSSI normalizer

D.

transmitting channel expander

E.

rogue detection

 

Correct Answer: AB

 

 

QUESTION 45

Which type of basic radiation pattern does a Yagi antenna have?

 

A.

circular

B.

semicircular

C.

straight line

D.

cone

 

Correct Answer: D

 

 

QUESTION 46

The network administrator has used VLANs to separate VoIP frames from data frames in the wired network. What must the administrator use to separate those frames in the wireless network?

 

A.

multiple SSIDs

B.

multiple authentications

C.

multiple WEP or WPA keys

D.

multiple channels

E.

multiple 802.11 radios (a, b, g, n)

 

Correct Answer: A

 

 

 

 

 

QUESTION 47

Which calculation computes the EIRP of an antenna?

 

A.

EIRP = Tx power (dBm) + Antenna Gain (dBi) – Cable Loss (dB)

B.

EIRP= Cable Loss (dB)+ Antenna Gain (dBi) – Tx power (dBm)

C.

EIRP = Cable Loss (dB)+ Antenna Gain (dBi) / Tx power (dBm)

D.

EIRP = Tx power (dBm) + Antenna Gain (dBi) / Cable Loss (dB)

E.

EIRP = Antenna Gain (dBi) – Cable Loss (dB) * Tx power (dBm)

F.

EIRP = Tx power (dBm) * Antenna Gain (dBi) / Cable Loss (dB)

 

Correct Answer: A

 

 

QUESTION 48

Which two statements about WiMAX technology are true? (Choose two.)

 

A.

WiMAX is defined by 802.11i.

B.

Typically, fixed WiMAX networks have a higher-gain directional antenna installed near the client.

C.

WiMAX is capable of working as a long-range system over several miles.

D.

WiMAX works only for licensed frequencies.

 

Correct Answer: BC

 

 

QUESTION 49

Which statement describes spread spectrum technology in wireless communications?

 

A.

Signal is spread across optical pulses.

B.

Signal is spread across variations of amplitudes.

C.

Signal is spread across one frequency.

D.

Signal is spread across a whole band of frequencies.

 

Correct Answer: D

 

 

QUESTION 50

What are three primary components that describe TKIP? (Choose three.)

 

A.

broadcast key rotation

B.

dynamic WEP

C.

message integrity check

D.

per-packet key hashing

E.

symmetric key cipher

F.

WPA2 enterprise mode

 

Correct Answer: ACD

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