CompTIA A+ Exam 220-1101 - Wireless Networking Quiz

Question 1

Frequency bands used by 802.11 networks include:

(2 answers)

Answer 1

5.0 GHz

2.4 GHz

Question 2

A common example of channel overlapping in wireless networking would be the 2.4 GHz band used in 802.11 networks, where the 2.401 - 2.473 GHz frequency range is used for allocating 11 channels, each taking up a 22-MHz portion of the available spectrum.

Setting up a wireless network to operate on a non-overlapping channel (1, 6, and 11 in this case) allows multiple networks to coexist in the same area without causing interference.

TRUE / FALSE

Answer 2

TRUE

Question 3

Which refer to the characteristics of Bluetooth?

(3 answers)

Answer 3

2.4 GHz frequency range

Used for connecting devices in a WPAN

Short-range wireless technology

Question 4

What are the characteristic features of the IEEE 802.11a wireless standard?

(2 answers)

Answer 4

Maximum data signaling rate of 54 Mbps

5.0 GHz frequency band

Question 5

Which refers to the IEEE 802.11b [WIFI 2] wireless standard?

(2 answers)

Answer 5

Maximum data signaling rate of 11 Mbps

2.4 GHz frequency range

Question 6

Which refers to the IEEE 802.11g [WIFI 3] wireless standard?

(2 answers)

Answer 6

Maximum data signaling rate of 54 Mbps

2.4 GHz frequency range

Question 7

Multiple Input / Multiple Output (MIMO) is a wireless technology that allows for significant increase in wireless data throughput due to the use of multiple antennas and multiple data streams.

TRUE / FALSE

Answer 7

TRUE

Question 8

The characteristic features of the IEEE 802.11n [WIFI 4] wireless standard include:

Answer 8

Multiple Input / Multiple Output (MIMO)

2.4 GHz frequency band
5.0 GHz frequency band

Maximum data signaling rate of up to 600 Mbps

Question 9

Which refers to the features of the IEEE 802.11ac (WiFi 5) wireless standard?

(3 answers)

Answer 9

5.0 GHz frequency band

Maximum data signaling rate of up to 6.933 Gbps

Multi-User Multiple Input / Multiple Output (MU-MIMO)

Question 10

What are the characteristics of the IEEE 802.11ax (WiFi 6) wireless standard?

Answer 10

5.0 GHz frequency band

Multi-User Multiple Input / Multiple Output (MU-MIMO)

2.4 GHz frequency band

Maximum data signaling rate of up to 9.607 Gbps

Question 11

Which antenna types would be the least suitable for long-range point-to-point bridging links?

Answer 11

Omnidirectional antenna

Question 12

Which refers to example of an unlicensed wireless frequency band?

Answer 12

900 MHz

2.4 GHz

5 GHz

5.8 GHz

Question 13

Which refers to directional antenna types suitable for long-range point-to-point bridging links?

(3 answers)

Answer 13

Yagi antenna
Dish antenna
Parabolic antenna

Question 14

Which wireless technology enables identification and tracking of tags attached to objects?

Answer 14

RFID

Question 15

A type of identification badge that can be held within a certain distance of a reader to authenticate the badge holder is called:

Answer 15

RFID badge

Question 16

Which of the following actions would be of help while troubleshooting intermittent wireless connectivity problems?

Answer 16

Check physical connections (e.g., loose/faulty cables, expansion cards, etc.)

Increase the signal strength (adjust power level controls on a WAP, move closer to a WAP, or switch to a different WAP)

Configure a WAP to operate on a different wireless channel (1, 6, or 11)

Check for interference from wireless devices operating in the 2.4 GHz frequency band (e.g., cordless phones, Bluetooth devices, or microwave ovens)

If possible, check the network’s performance on a different frequency band (2.4 GHz or 5 GHz)

Reduce the number of wireless devices using up available bandwidth on the network