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Which of these devices cause all-band interference in the 2.4 GHz ISM band? (Choose all that apply.)

A. BluetoothB. FHSS cordless phonesC. DSSS cordless phonesD. 802.11a access pointE. All of the above
Says that the correct answer is A,B, and D.  How does a 802.11a access point cause all-band interference in the 2.4 GHz ISM band?

We used to have some sticky topics here in the forum for errata in the study guides.  I'm sure they're in here somewhere, so you might want to add this one.  Is this for the PW-105 or PW-104?

PW-104. Taken the test on the last day it is available.

Good luck!!!

In answer to your original question:

It can't !