Which of the following would interfere with an IEEE 802.11g Wireless network? (Select all that
apply.)

A.
Walls

B.
Bluetooth devices

C.
Microwave ovens

D.
IEEE 802.11a devices

Explanation:
Walls interfere with all wireless networks with the more walls a wireless signal has to pass
through, the greater the signal loss. Microwave ovens also use the unlicensed 2.4 GHz radio
frequency band and could interfere with an IEEE 802.11g Wireless network.
Incorrect Answers:
B: Bluetooth and IEEE 802.11g uses different spread spectrum signaling methods which prevents
interference between that two. Bluetooth uses the frequency hopping spread spectrum (FHSS)
signaling method while IEEE 802.11g uses a direct sequence spread spectrum (DSSS).
D: IEEE 802.11a devices operate at the 5.0 GHz radio frequency band and will not interfere with
IEEE 802.11g networks which operate at the 2.4 GHz radio frequency band.References:David

Groth and Toby Skandier, Network+ Study Guide (4th Edition), Sybex, Alameda CA, 2005, pp.
246-248, 473.