There are different things you can use to restrict access a wireless access point.
First one is to use so called black/white lists. Black list forbids certain MAC address to access the wireless access point everybody else is fine. White list allows only certain MAC address to access the wireless access point. Sometimes it's called MAC filter.
Second thing you can use is a wireless password. It allows to connect to your network only if you know the password. You should use WPA at least.
NICs do not connect to applications, rather they connect to other wireless devices. IEEE 802.1 is the standard used to connect wireless NICs to other network devices.
Access Point (AP)
It's a wireless access point. You connect it to a broadband modem and then use it with wireless devices to connect to the internet.
WAP, or Wireless Access Point
It's a wireless access point. You connect it to a broadband modem and then use it with wireless devices to connect to the Internet.
no. some of these devices are wireless and have a small wireless adapter to go into the socket where the wire previously went
wireless conectivity is t6hings like bluetooth things that can connect with other devices without wires connected
Sure, you can set it to ad-hoc mode, and connect two devices together
Wireless Router, and other wireless enabled devices such as laptop,PC's.
it is expandability because it does not need any media in order to connect the devices.
Wireless Networks
A wireless LAN does not need wires to connect; therefore, devices using a WLAN can be very mobile and are not constrained by physical wiring.