if you don't know, don't respond. Post trolling by saying Google them is not going to get you very far.
As far as most of the other configs, it's beyond standard consumer needs. if you are really concerned with secuirty, then you might consider using WAP and a VPN, but I believe it requires another system to manage.
Wi-Fi 802.11a and b offers built-in WAP 128-bit encryption. This is specified in the original 802.11 foundation document. Use of this in an office is strongly suggested at the 128bit level. It must be turned on, configured, documented, and managed to work effectively. Using WAP is not simple, or intuitive. WAP is not total security, however; WAP can be broken by hackers with patience. A VPN is required for complete security in an office environment.