Computer File Systems

Common digital video format standardised by the Moving Picture Experts Group (MPEG); typically incorporates MPEG-1 or MPEG-2 audio and video compression; often used for creating movies that are distributed on the Internet.

A file with extension GIF stores pictures files.

MP3, AIF (Audio Interchange File), and WAV are all digital audio file formats for storing sound. COM is a file extension for DOS executable programs (commands), not audio files. Other audio extensions include MP3, WAV, WMA, AAC, FLAC, OGG, and AIFF.

JPEG, GIF, and BMP are all image file formats used for storing pictures and graphics. TMP is a generic extension for temporary files that can contain any type of data - it's not specific to images. Temporary files are used by programs to store data temporarily during processing.

The traditional file extension for Excel files is .xls. This was used for Excel files from 1987 through Excel 2003. Starting with Excel 2007, .xlsx became the default for the new XML-based format, but .xls remains the classic extension.

This mode is used to open a file for reading only. The input pointer is automatically set at the beginning.

This mode is invalid.

Exit is not a valid AWK variable.

The write permission allows the user to write or edit the contents of the file.

README is a standard filename for plain text documentation files that provide information about software, such as installation instructions or usage guidelines. It is simply a text file. Option A is incorrect; README is not an icon. Option C is unrelated. Option D incorrectly suggests README encompasses multiple types of objects.

A file handle is a unique identifier that an operating system assigns when a file is opened. Programs use this handle to reference and manipulate the open file throughout its execution. Each open file gets a distinct handle to track file operations.

FAT stands for File Allocation Table, a file system architecture developed by Microsoft for MS-DOS and later used in Windows. It keeps track of how files are stored on the disk. The question has a typo ('satnds' instead of 'stands') but this doesn't affect the answer. Option C is correct.

Every directory in MS-DOS contains two special entries: '.' (current directory) and '..' (parent directory), which are called directory markers. These cannot be deleted as they are essential for directory navigation. Files do not have these markers.

The .ppt extension is the standard file format for Microsoft PowerPoint presentations. While .pps exists for PowerPoint Show, .ppt is the primary editable format.

This extension is used by executable file.