Question 1

Which two statements about line-of-sight communication are true? (Choose two.)

Options :

A : A signal might reflect on an object and be successfully received in a place from which the sender cannot be seen

B : For a 6-foot person, the horizon appears at about 6 miles.

C : Visual obstacles always prevent adequate line of sight.

D : Visual line of sight is necessary for good signal transmission.

E : The distance between the sender and receiver must be at least 25 miles apart for earth curvature to play a role in the quality of outdoor links

Answer: A,B

Question 2

Which unit of measure is used to compare antennas to a dipole antenna?

Options :

A : mDw

B : mW

C : dBi

D : dBd

Answer: D

Question 3

You are evaluating access points for use in the 5 GHZ frequency band. What PHY supports this band and supports 80 MHz channels?

Options :

A : HT

B : VHT

C : OFDM

D : ERP

Answer: B

Question 4

You are installing an AP to be used by 23 laptops. All laptops will connect on the 5 GHz frequency band. A neighbor network uses channels 1 and 6. What channel should be used for this AP and why?

Options :

A : A 5 GHz channel, because channels 1 and 6 are 2.4 GHz channels they have no impact on the decision

B : Channel 1, because it is best to use the channel with the lowest frequency

C : Channel 11, because channels 1 and 6 are in use nearby

D : Channel 6, because it is always best to use this channel

Answer: A

Question 5

Which statement correctly describes an ad hoc wireless network?

Options :

A : It is referred to as an IBSS.

B : It has a maximum connectivity range of 1000 meters.

C : It requires an AP.

D : It uses multiple wireless frequencies.

Answer: A

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