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The File Extension Library

What is a file extension?

Short answer: it's the set of letters after the period (.) in the name of a file.

Long answer: File extensions signify the file format of a file. It tells the operating system (OS) how data was stored in the file. Not all OS, require a file extension though. For instance, this is optional in Unix, but is mandatory with MS-DOS and Windows systems.

In most file formats the file type is actually defined by the contents (first bytes, file structure), but extensions are used to define the application that is used for opening the file.

Below is a detailed database of thousands of file extensions our team has compiled for you. Feel free to browse!


Browse all Extensions:
ABCDEFGHIJKLMNOPQRSTUVWXYZ
VAS - Extension Details
Date Added: March 03, 2009
File Extension:  .VAS
Description 1: File extension .VAS is tied to VirtualAssessor Diagnostic Scenario Database. VirtualAssessor refers to a browserbased (online) testing system providing a testing interface as well as a management tool to monitor and measure competency, knowledge and performance. VAS files are database scenarios that contain info and questions for VirtualAssessor Diagnostic.
File Type:   Database file
Mode: Binary
Program(s) to Open:  Associated link: Eduflex.com (Distributor of Virtual Assessor)
Common:
Extension: