Important File Extensions Questions and Answers

Answer: C

Correct answer: .wmv

.wmv is Windows Media Video, Microsoft's video format, matching .wma for audio.

Answer: B

Correct answer: .tmp

.tmp marks a temporary file, created by a program while it works and normally deleted afterwards.

Answer: A

Correct answer: .yps

.yps is the data file Yahoo Messenger used for its stored profile and message information.

Answer: A

Correct answer: Tape Archive

.tar is short for Tape Archive, named for the magnetic tapes it was written to originally. It bundles many files into one without compressing them, which is why it is so often paired with gzip as .tar.gz.

Answer: D

Correct answer: Portable Document Format

PDF stands for Portable Document Format, Adobe's format for documents that look the same on every machine because the file carries its own fonts and layout.

Answer: C

Correct answer: Norton Ghost Backup File

.gho is the disk image file written by Norton Ghost; the extension is the first three letters of the product name.

Answer: B

Correct answer: .exe

.exe marks an executable program that Windows can run directly. It differs from .dll, which also holds code but is loaded by a running program rather than started on its own.

Answer: A

Correct answer: True

.dat is a generic data file extension: it says the contents are data for some program without identifying the program or the format, so the statement is true.

Answer: B

Correct answer: .torrent

A .torrent file holds the metadata - file names, sizes, checksums and tracker address - that a BitTorrent client needs in order to find and verify the actual content.

Answer: C

Correct answer: .java

Java source files take .java, and the compiler turns each into a .class file of bytecode.