Tell me more ×
Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. It's 100% free, no registration required.
up vote 0 down vote favorite

I have a wireless security related question, the second part confused me:

Your wireless network usually has a range of 100 feet. However you are having a (confidential) meeting in a 10’ x 10’ x 10’ room but want to use a wireless access point in the room. By how much can you decrease the power to diminish the threats?

If you want to spy on the meeting mentioned previously, from 100 feet away, what is the gain (in dB) of the antenna you need?

In the second part of the question, Does the radius sphere have to be 100 - 10 feet?

In the feet, where no signal at all, how can i modify the antenna to achieve this?

share|improve this question
The questions being asked here is not clear – hwlau Dec 29 '12 at 18:13
Currently, the question you ask isn't really clear. Clarify it and I'll be happy to reopen the post :) – Manishearth♦ Dec 29 '12 at 20:49

closed as too localized by Manishearth♦ Dec 29 '12 at 20:49

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, see the FAQ.