Wireless Networks

Question 1

Wireless Network Types

1) Network where devices connect directly to each other rather than through a central access point (doesn’t typically provide Internet access)

2) More organized setup in which devices are connected to the network through a wireless access point into a wired local area network

3) Connect two distinct locations over long distances using high-gain antennas (highly efficient and offers dedicated bandwidth between two points

4) Versatile and resilient form of wireless networking

Answer 1

1) Ad Hoc / Independent Basic Service Set (IBSS)

2) Infrastructure Wireless Network

3) Point-to-point wireless networks

4) Mesh wireless networks

Question 2

Wireless Antenna

1) Antenna used for long and narrow coverage areas or a strong signal in one particular direction

2) Antenna that is best when capturing or sending signals over long distances to or from a specific, fixed location

3) Antenna designed to transmit and receive wireless signals in all directions equally

Answer 2

1) Uni-directional antenna

2) Yagi antenna

3) Omni-directional antenna

Question 3

Wireless Frequencies

1) Slowest data transfer speed, reaches far distances, penetrates objects.

2) Less interference and higher performance, but shorter range and doesn’t penetrate objects as well.

3) Shortest distance, lest amount of solid object penetration

Answer 3

1) 2.4 GHz band

2) 5 GHz band

3) 6 GHz band

Question 4

802.11 standards

1) 802.11a
- 5 GHz band
- Speed: 54 Mbps
- Range: 35 meters

2) 802.11b
- 2.4 GHz band
- Speed: 11 Mbps
- Range: 140 meters

3) 802.11g
- 2.4 GHz band
- Speed: 54 Mbps
- Range: 140 meters

4) 802.11n
- 5 GHz band or 2.4 GHz
- Speed: 600 Mbps
- Range: 35 meters

5) 802.11ac
- 5 GHz band
- Speed: 6.9 Gbps

6) 802.11ax
- 2.4, 5, or 6 GHz bands
- Speed: 9.6 Gbps

Answer 4

2.4 GHz
b, g, n, and ax

5 GHz
a, n, ac, or ax

6 GHz
ax

Question 5

Wireless Security
1) Pre-shared key
2) Enterprise authentication system (802.1X)

Wireless Encryption security
1) Uses a 24-bit Initialization Vector (IV)

2) Uses a 48-bit (TKIP). Uses (RC4)

3) Uses (CCMP) and uses a 128 bit key AES (advanced encryption standard)

4) Uses SAE (Simultaneous Authentication of Equals) (Dragonfly handshake, typically uses a 192 bit key.)

5) Uses 8-digit pin, push button

Answer 5

1) WEP
2) WPA
3) WPA2
4) WPA3
5) WPS