Describe some steps an administrator might need to take to avoid dead zones in a wireless network.

What will be an ideal response?

With a difficult or high-interference area, an administrator might need to move up to 802.11n or 802.11ac equipment with three or four antennas just to get the kind of coverage you want. Or you might need to plan a multiple WAP network to wipe out the dead zones. A proper site survey gives you the first tool for implementing a network that works.