2.3 Wireless network standards

Question 1

Frequency that is comprised of four standards 802.11b, 802,11g, 802.11n, and 802.11ax.

Answer 1

2.4GHz

Question 2

Frequency that is comprised of four standards. 802.11a, 802.11n, 802.11Ac, and 802.11ax.

Answer 2

5GHz

Question 3

Wireless routers are set to these from 1-11. Different frequencies at each point.

Answer 3

Channels

Question 4

Countries govt bodies set forth standards to manage frequencies.

Answer 4

Regulations.

Question 5

Frequency that works over longer distances. but slower speeds. The more crowded the frequency the more susceptible to interference it is.

Answer 5

2.4GHz

Question 6

Frequency works over shorter distances but has faster speeds.

Answer 6

5GHz

Question 7

Uses 2.4Ghz range. Operates at about 10 meters. Industrial versions can operate over 100 meters.

Answer 7

Bluetooth

Question 8

Original 802.11 wireless standard (October 1999). Operates in the 5 GHz range or other frequencies with special licensing. 54 megabits per second. Shorter range that 802.11b. Not common today.

Answer 8

802.11a

Question 9

An original 802.11 standard (October 1999). Operates in the 2.4 GHz range. 11 megabits per second (Mbit/s). Better range than 802.11a, less absorption problems. More frequency conflict. Not common today.

Answer 9

802.11b

Question 10

An “upgrade” to 802.11b (June 2003). Operates in the 2.4 GHz range. 54 megabits per second (Mbit/s) - Similar to 802.11a. Backwards-compatible with 802.11b. Same 2.4 GHz frequency conflict problems as 802.11b.

Answer 10

802.11g

Question 11

The update to 802.11g, 802.11b, and 802.11a (October 2009). Operates at 5 GHz and/or 2.4 GHz. 600 megabits per second (Mbit/s). Uses MIMO.Multiple-input multiple-output– Multiple transmit and receive antennas

Answer 11

802.11n (Wi-Fi 4)

Question 12

Approved in January 2014. Significant improvements over 802.11n. Operates in the 5 GHz band,Less crowded, more frequencies (up to 160 MHz
channel bandwidth). Increased channel bonding - Larger bandwidth usage. Eight MU-MIMO downlink streams.

Answer 12

802.11ac (Wi-Fi 5)

Question 13

Approved in February 2021, The successor to 802.11ac/Wi-Fi 5. Operates at 5ghz or 2.4ghz. Orthogonal frequency-division multiple access (OFDMA), Works similar to cellular communication, Improves high-density installations.

Answer 13

802.11ax (Wi-Fi 6)

Question 14

Wireless access point in a house with Stock Antennas. You might get a range of 40 to 50 meters. Directional antennas, Focused, point-to-point connection.

Answer 14

Long Range Fixed Wireless

Question 15

Frequences that are limited by governments, radio stations, and the FCC for the radio spectrum.

Answer 15

Licensed

Question 16

Frequencies that are still free to use by anyone but still have limits to follow.

Answer 16

Unlicensed

Question 17

The ability to send wave frequencies over long distances. Can be limited in some ways.

Answer 17

Power

Question 18

The amount of power that can be applied to the radio transmission is controlled by the FCC. Operates by two sets of roles. A point-to-point multipoint network and for a point-to-point connection.

Answer 18

Regulatory requirements for
wireless power

Question 19

Two-way wireless communication– Builds on RFID, which is mostly one-way. Payment systems, Major credit cards, online wallets. Helps with Bluetooth pairing. Short range with encryption support.

Answer 19

NFC (Near field communication)