New Updated Cisco CCNA Wireless 640-722 Real Exam Download 61-70

Ensurepass

QUESTION 61

Which statement about ZigBee technology is true?

 

A.      It has low power consumption.

B.      It is designed only for point-to-point communications.

C.      It ranges up to 250 meters.

D.      It supports data rates up to 1 and 2 Mb/s.

 

Correct Answer: A

 

 

QUESTION 62

Which four options are the characteristics of the original 802.11 protocol? (Choose four.)

 

A.      Defined DSSS and FHSS as possible methods for modulation.

B.      Designed to operate in the 5 GHz ISM frequency spectrum.

C.      The most common deployment is three non-overlapping channels that are 20 MHz wide.

D.      The protocol sets the maximum throughput at 1 Mb/s or 2 Mb/s.

E.       Defined FHSS and OFDM as possible methods for modulation.

F.       The most common deployment is three non-overlapping channels that are 22 MHz wide.

G.      Designed to operate in the 2.4 GHz ISM frequency spectrum.

H.      The protocol sets the maximum throughput at 1 Mb/s.

 

Correct Answer: ACDG

 

 

QUESTION 63

The network administrator receives complaints of slow wireless network performance and

performs a sniffer trace of the wireless network in preparation for migration to 802.11n. The

sample capture shows frames that contains AP beacons with NonERP_Present bit set to 1 and

frames with RTS/CTS. Which two conclusions can be interpreted from these frames?

(Choose two.)

 

A.      The network is performing slowly because 802.11n clients are already mixed with 802.11g

clients.

B.      The network is performing slowly because 802.11b clients still exist in the network.

C.      The network is performing slowly because a wireless client is incorrectly configured, which

results in RF interference.

D.      Possible 802.11b wireless clients are located only in the AP cell radius where the sniffer

capture was performed.

E.       Possible 802.11b wireless clients could be located anywhere in the wireless network.

 

Correct Answer: BE

 

 

QUESTION 64

How many dBm is 40 mW?

 

A.      10 dBm

B.      16 dBm

C.      20 dBm

D.      22 dBm

E.       40 dBm

 

Correct Answer: B

 

 

QUESTION 65

If an antenna has a dBd of 8.6, what is the dBi value?

 

A.      6.2

B.      6.46

C.      8.6

D.      10.74

E.       12.88

 

Correct Answer: D

 

 

QUESTION 66

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 67

Which three items are allowed on an Ethernet trunk port? (Choose three.)

 

A.      autonomous AP

B.      FlexConnect AP

C.      local AP

D.      monitor AP

E.       rogue detector AP

F.       sniffer AP

G.      SE-Connect AP

H.      Cisco WLC

 

Correct Answer: BEH

 

 

QUESTION 68

Which option describes computer-to-computer wireless communication?

 

A.      BSS and BSA

B.      IBSS and ad hoc network

C.      ad hoc network and BSA

D.      IBSS and ESS

E.       ESS and BSA

F.       BSS and ad hoc network

 

Correct Answer: B

 

 

QUESTION 69

Which two statements about AES-CCMP are true? (Choose two.)

 

A.      It is an encryption algorithm used in the 802.11i security protocol.

B.      It is defined in 802.1X.

C.      It is the encryption algorithm used in TKIP implementations.

D.      It is required in WPA.

E.       It is required in WPA2.

 

Correct Answer: AE

 

 

QUESTION 70

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

 

Download Latest Complete Collection of CCNA Wireless 640-722 Real Q&As ,help you to pass exam 100%.

Ensurepass Cisco Certifications Exam Questions and Answers
Ensurepass CCNA Wireless Exams Questions and Answers

Leave a Reply