WPA-PSK (Wi-Fi Protected Access-Pre-Shared Key)
WPA-PSK stands for Wi-Fi Protected Access-Pre-Shared Key; basically it is
an authentication mechanism in which users provide some form of
credentials to verify that they should be allowed access to a network.
The encryption mechanisms for WPA and WPA-PSK are the same. The only
difference is that the authentication in WPA-PSK is reduced to a simple
password, instead of user-specific credentials.
Web browser
This is basically a software program used for reaching various kinds of
information on the Web.
X
Y
Z
Zoom lens
A zoom lens has the advantage of rapidly changing the focal length.
Zoom ratio
This defines the ratio between the maximum and minimum focal length that
a zoom length is capable of.