Important File Extensions Questions and Answers

Answer: B

Correct answer: Cascading Style Sheet

CSS stands for Cascading Style Sheets, the language that describes how HTML is presented. Cascading refers to the rule by which conflicting styles are resolved in order of precedence.

Answer: D

Correct answer: PostScript File

.ps holds PostScript - a page description language which is also a programming language, sent to a printer or interpreted to produce a page image.

Answer: D

Correct answer: DOS Batch File

A .bat file is a batch file: a plain text list of DOS commands run in sequence. The DOS command executable is .com.

Answer: A

Correct answer: .cfg

.cfg holds configuration settings for a program. .cgi is a web script and .con is not an extension in use.

Answer: A

Correct answer: .ra

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

Answer: D

Correct answer: Java bytecode compiled from source

A .class file holds the bytecode produced when the Java compiler processes a .java source file. The Java Virtual Machine executes this bytecode, which is what lets the same compiled file run on any platform with a JVM.

Answer: A

Correct answer: .ppt

.ppt is the PowerPoint presentation format up to Office 2003, replaced by .pptx afterwards. .pps is the same content saved to open straight into the slide show.

Answer: D

Correct answer: .dmp

.dmp holds a memory dump - the contents of memory written to disk when the system crashes, for later analysis.

Answer: A

Correct answer: .sys

.sys marks a system file, typically a device driver or a component the operating system loads at startup.

Answer: B

Correct answer: Portable Network Graphic File

PNG is Portable Network Graphics, the lossless image format created as a patent-free replacement for GIF.