Wireless Protocols

Question 1

What are the two common WiFi Bands?

Answer 1

2.4GHz and 5GHz

Question 2

What three channels on 2.4GHz are important?

Answer 2

Channels 1, 6, and 11

Question 3

What are the standards of:

802.11a
802.11b
802.11g

Answer 3

a is 5 GHz — 54 Mbps
b is 2.4 GHz — 11 Mbps
g -s 2.4 GHz — 54 Mbps

Question 4

What are the standards of:

802.11n
802.11ac
802.11ax

Answer 4

n (Wi-Fi 4) — 2.4 or 5 GHz — 600 Mbps
ac (Wi-Fi 5) — 5 GHz — 7 Gbps
ax (Wi-Fi 6) — 2.4 or 5 GHz — 10 Gbps

Question 5

How far can Bluetooth 2.4GHz reach?

Answer 5

10 meters or 32.8 ft.

Question 6

What is NFC?

Answer 6

Near Field Communication
- 13.56 MHz

Question 7

Whats the difference between powered and unpowered tags?

Answer 7

Powered tags have a range of 100 meters

Question 8

What is an SSID?

Answer 8

Service Set identifier (wifi WLAN name)

Question 9

What is NAT?

Answer 9

Network Address Translation

allows our private local network IPv4 addresses to be translated into a public IP address capable of connecting over the Internet