A virtual device driver (VxD) is a software device driver that emulates hardware and other devices so that multiple applications running in protected mode can access hardware interrupt channels, hardware resources and memory without causing conflicts. The Vxd was superseded by the Windows Driver Model (WDM) and is now obsolete.
Wi-Fi Protected Access Pre-Shared Key (WPA-PSK) is a security mechanism used to authenticate and validate users on a wireless LAN (WLAN) or Wi-Fi connection. It is a variation of the WPA security protocol.
WPA-PSK is also known as WPA2-PSK or WPA Personal.
WPA-PSK does not require an authentication server and manual user configuration. Thus, it is considered simpler and leaner than WPA Enterprise, a WPA variant.
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