Wireless Networking

Question 1

Frequency bands used by 802.11 networks include

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.

Answer 2

True

Question 3

Which of the following answers refers 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 characteristics features of the IEEE 802.11a wireless standard? 2 answers

Answer 4

Maximum data signaling rate of up to 54 mbps
5.0 GHz frequency band

Question 5

Which of the answers below refer to the IEEE 802.11b wireless standard ? 2 answers

Answer 5

Maximum data signaling rate of 11 mbps
2.4 GHz frequency range

Question 6

Which of the following answers refer to the IEEE 802.11g witless 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

Answer 7

True

Question 8

The characteristic features of the IEEE 802.11n (Wi-Fi 4) wireless standard include (4 answers)

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 of the following answers refers to the features of the IEEE 802.11ac (Wi-Fi 5) wireless standard? (3 answers)

Answer 9

5.0 GHz frequency band
Maximum data signaling rate of up to 7 gbps
Multi user multiple input/multiple output (MU-MIMO)

Question 10

What are the characteristics of the IEEE 802.11ax(Wi-Fi 6) wireless standard ? 4 answers

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 of the filling antenna types would be the least suitable for long range point to point bridging links?

Answer 11

Omnidirectional antenna

Question 12

Listed below refers to an example of an unlicensed wireless frequency band. 4 answers

Answer 12

900 mhz
2.4 GHz
5 GHz
5.8 GHz

Question 13

Which of the filling answers 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 filling actions would be of help troubleshooting intermittent wireless connectivity problems?

Answer 16

Check physical connections (loose/faulty cables, cards,etc)
Increase signal strength ( adjust power level controls on a WAP, move closer to 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(cordless phones,Bluetooth devices,or microwave ovens)
If possible check the network’s performance on a different frequency band (2.4 or 5)
Reduce the number of wireless devices using up available bandwidth on the network