You are the network administrator at Certkiller .com. Certkiller .com has several workstations that
have wireless 802.11g network adapters. Every day at around lunchtime wireless users complain
of lack of connectivity. What can you do to this problem?

A.
Replace the WAP with an 802.11b WAP.

B.
Reduce the Radio Frequency Interference around the WAP.

C.
Configure the wireless workstations and the WAP to operate in ad-hoc mode.

D.
Connect the WAP directly to the network.

Explanation:
802.11g uses the 2.4 GHz range which is also used by appliances such as microwaves. The
connectivity problem occurs at around lunch time, which seems to indicate that the increased use
of microwaves at around this time is causing RFI (Radio Frequency Interference). We should thus
attempt to eliminate this RFI.
Incorrect Answers:
A: 802.11a uses the 5.0 GHz range and will not be affected by other devices that use the2.4 MHz
range. However, we would need to change the wireless adapters on the workstations to 802.11a
as well.
C: In ad-hoc mode, two wireless devices can communicate directly, without the need for a WAP.
However, these devices would not have access to the wired network.
D: By design, the WAP is directly connected to the network but this will not overcome the RFI
(Radio Frequency Interference) that is affecting the wireless signal.References:David Groth and
Toby Skandier, Network+ Study Guide (4th Edition), Sybex, Alameda CA, 2005, pp. 251, 252,
255.