When deploying a wireless LAN, companies must make a decision on whether to use network interface cards (NICs) and access points designed to operate in the 2.4GHz or 5GHz band (or both). Not too long ago the choice of frequency band was easy, when only 2.4GHz (i.e., 802.11b) products were available. Now, 802.11b and 802.11g products are both available that operate in the 2.4GHz band, while 802.11a use the 5GHz band. This can cause confusion when designing a WLAN, so let's take a look at what you need to consider when making this critical resolution.
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