Important File Extensions Questions and Answers

Answer: C

Correct answer: Backup file

.bak marks a backup copy, usually written automatically before a program overwrites the original. Renaming it back to the original extension is the normal way to recover the earlier version.

Answer: C

Correct answer: .svg

.svg is Scalable Vector Graphics, an XML-based format that stores shapes rather than pixels, so the image can be enlarged without loss.

Answer: A

Correct answer: Photoshop Plug-in

.8bi is a Photoshop plug-in - the 8b prefix marks the family of Adobe plug-in types, and i denotes an import or filter plug-in. A Photoshop document is .psd.

Answer: B

Correct answer: java server page

.jsp is a Java Server Page - HTML with embedded Java that the server executes to produce the page sent to the browser.

Answer: D

Correct answer: Apple QuickTime Movie

.qt is a QuickTime movie, Apple's multimedia container; .mov is the commoner extension for the same format.

Answer: A

Correct answer: photoshop document

.psd is the native Photoshop file, keeping layers and editing information intact. A flattened picture file such as .jpg or .png keeps only the finished image.

Answer: C

Correct answer: .swf

.swf is the compiled Flash movie that a player runs; .fla is the editable source file it is built from.

Answer: C

Correct answer: .mdb

.mdb is the Microsoft Access database format used up to Access 2003; from 2007 the default became .accdb.

Answer: B

Correct answer: .ra

.ra is RealAudio, the streaming audio format from RealNetworks.

Answer: A

Correct answer: .reg

.reg is a Windows Registry file: a text file of registry keys and values that is merged into the registry when opened. Because it edits system settings directly, a bad .reg file can leave Windows unusable.