Important File Extensions Questions and Answers

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: .zip

.zip is the standard compressed archive format, holding one or more files compressed together.

Answer: B

Correct answer: .py

.py marks a Python source file. When it is run, Python compiles it to bytecode and may cache that alongside as a .pyc file to save recompiling next time.

Answer: B

Correct answer: .cfg

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

Answer: C

Correct answer: .cpp

.cpp is the usual extension for C++ source; the doubled p stands for the two plus signs in the language's name. Plain C source uses .c.

Answer: B

Correct answer: .cgi

.cgi marks a Common Gateway Interface script - a program a web server runs to generate a page rather than serving a file.

Answer: C

Correct answer: .mdb

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

Answer: D

Correct answer: Picture File

.pct is a PICT file, the Macintosh picture format that could hold both bitmap and vector data.

Answer: A

Correct answer: .ico

.ico is the Windows icon format. A single .ico file can hold the same image at several sizes and colour depths, letting Windows pick whichever fits the place it is being drawn.

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.