Final answer:
The three UNII bands in a wireless LAN have different widths: UNII-1, UNII-2, and UNII-3, each spanning a range of frequencies that is 100 MHz apart.
Step-by-step explanation:
Each of the three Unlicensed National Information Infrastructure (UNII) bands in a wireless local area network (LAN) has a different width:
- UNII-1: 5.15 to 5.25 gigahertz (GHz) - 100 megahertz (MHz)
- UNII-2: 5.25 to 5.35 GHz - 100 MHz
- UNII-3: 5.725 to 5.825 GHz - 100 MHz
The width of each UNII band refers to the range of frequencies within that band. In the case of these UNII bands, each band is 100 MHz wide, meaning it spans a range of frequencies that is 100 MHz apart.