Final answer:
The four common varieties of wireless LANs are 802.11a, 802.11b, 802.11g, and 802.11n
Step-by-step explanation:
The four common varieties of wireless LANs are:
- 802.11a: This standard operates in the 5 GHz frequency band and offers a maximum data rate of 54 Mbps. It provides shorter range compared to other standards.
- 802.11b: This standard operates in the 2.4 GHz frequency band and offers a maximum data rate of 11 Mbps. It provides better range compared to 802.11a.
- 802.11g: This standard operates in the 2.4 GHz frequency band and offers a maximum data rate of 54 Mbps. It is backward compatible with 802.11b and provides better range and speed.
- 802.11n: This standard operates in both 2.4 GHz and 5 GHz frequency bands and offers a maximum data rate of up to 600 Mbps. It provides improved range and speed compared to previous standards.