Question 1

You are configuring an access point to use channel 128. What important fact should be considered about this channel?

Options :

A : It is a channel that is unsupported by most access points

B : It is a 22 MHz channel so it will overlap with the channels above and below it

C : It is a 2.4 GHz frequency band 40 MHz channel, so it should not be used

D : It is a channel that likely requires DFS when used

Answer: D

Question 2

You manage a WLAN with 100 802.11ac access points. All access points are configured to use 80 MHz channels. In a particular BSS, only 40 MHz communications are seen. What is the likely cause of this behavior?

Options :

A : All clients implement single spatial stream radios

B : The AP is improperly configured to use only 40 MHz of the 80 MHz allocated bandwidth

C : The clients are all 802.11n STAs or lower

D : The short guard interval is also enabled.

Answer: C

Question 3

What statement about the IEEE 802.11-2016 QoS facility is true?

Options :

A : 802.11 control frames are assigned to the 802.11 EF priority queue

B : When the Voice queue has frames awaiting transmission, no data will be transmitted from the Best Effort queue.

C : Four 802.1p user priorities are mapped to eight 802.11 transmit queues.

D : 802.11 QoS is achieved by giving high priority queues a statistical advantage at winning contention.

Answer: D

Question 4

What is the range of connectivity between NFC devices?

Options :

A : 25 cm

B : 10 cm

C : 50 cm

D : 1 cm

Answer: B

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