Computer Knowledge
Computer File Systems
1,516 Questions
Computer file systems dictate how data is stored, organized, and retrieved on storage devices. Important concepts include file allocation tables, access mechanisms, and various formats like sequential and video files. Candidates preparing for banking and government exams should practice these fundamentals thoroughly.
File access mechanismsVideo and password filesFile extensionsFile allocation tableSystem metadata
Computer File Systems Questions
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Image file
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Animation/movie file
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Audio file
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MS Office document
B
Correct answer
Explanation
The .MOV file extension is used for QuickTime multimedia files developed by Apple. These files contain video, audio, text, and effects, commonly used for movies and animations.
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WordPerfect Document file
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MS Office document
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Animation/movie file
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Image file
C
Correct answer
Explanation
The .MPG file extension is used for MPEG (Moving Picture Experts Group) video files. These are compressed digital video files commonly used for movies and animations, standardized by the MPEG group.
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Sashelp.PrdSale
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Sasuser.MySales
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Profits.Quarter1
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all of the above
D
Correct answer
Explanation
All three examples are permanent SAS datasets: Sashelp.PrdSale (library Sashelp), Sasuser.MySales (library Sasuser), and Profits.Quarter1 (library Profits). Permanent libraries persist between sessions, unlike the temporary Work library.
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proc contents data=area51.all nods;
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proc contents data=area51 all nods;
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proc contents data=area51 all noobs;
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proc contents data=area51 all.nods;
A
Correct answer
Explanation
In SAS, PROC CONTENTS with data=libname.ALL lists all datasets in a library. The NODS option suppresses detailed dataset information. The correct syntax requires a two-level name with the library prefix and an underscore before and after ALL. Option A has the correct spacing and syntax.
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Just attach it and send it
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Try and break it up into several smaller downloads if possible
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Compress or "zip" the file first
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Email your other party directly first and make sure their connection can handle a large download
C,D
Correct answer
Explanation
Compressing (zipping) reduces file size significantly, making it faster to send and receive. Notifying the recipient beforehand is courteous so they know to expect a large attachment and can ensure their email system can handle it. Option B is less reliable than compression, and option A risks bouncing or blocking.
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session level
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mapping level
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worlflow level
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none of the above
A
Correct answer
Explanation
In Informatica PowerCenter, when the source is a file, file properties like source file name, directory path, and file type can be configured at the session level. Session properties override source qualifier settings and provide the most granular control for source file connections. Mapping and workflow levels don't handle these specific file properties.
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File will be permanently deleted
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File will be moved to the recycle bin
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File will be moved to the desktop
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None of the above
A
Correct answer
Explanation
When you delete a file from a shared network drive, it is permanently deleted and does NOT go to the local recycle bin. Network drives have different deletion behavior than local drives - files are removed immediately without a recovery option. This is why caution is important when deleting from shared drives.
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Move the file to recycle bin
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Remove the file permanently
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Recover deleted file
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None of the above
B
Correct answer
Explanation
In Windows, pressing Delete moves a file to the Recycle Bin, but the Shift + Delete combination bypasses the bin and permanently removes the file from the disk. It cannot be recovered through standard OS features once this action is performed.
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MS Office
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Windows explorer
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Internet explorer
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Both (b) and (c)
B
Correct answer
Explanation
Windows Explorer (now called File Explorer) is the native file management application in Windows used to navigate and view the file system. MS Office is a productivity suite, and Internet Explorer is a web browser, neither of which is designed for general local drive navigation.
C
Correct answer
Explanation
.doc is the traditional file extension for Microsoft Word documents, used by older versions (Word 97-2003). Modern Word uses .docx as the default format. .txt is for plain text files, and .text and .wrd are not standard Microsoft Word extensions.
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Outlook
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Explorer
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Acrobat
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Winzip
D
Correct answer
Explanation
WinZip is a well-known trialware file archiver and compressor for Windows. It is used to reduce the size of files (compression) and bundle them together. Outlook is for email, Explorer for file navigation, and Acrobat for PDF viewing.
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app/vnd.sun.j2me.app-descriptor
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text/vnd.sun.j2me.app-descriptor
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app/vnd.sun.j2me.jad
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text/vnd.sun.j2me.jad
B
Correct answer
Explanation
The official MIME type for a Java Application Descriptor (JAD) file is text/vnd.sun.j2me.app-descriptor, which tells the client how to handle the descriptor file.
A
Correct answer
Explanation
Active Server Pages (ASP) use the .asp file extension to indicate that the web page contains server-side script. The .ascx extension is for ASP.NET user controls, not classic ASP pages. .asd and .asc are not standard ASP extensions.
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.cfm and .cfml
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.cam and .caml
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.cofm and .cofml
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.cofn and .cofnl
A
Correct answer
Explanation
ColdFusion files use .cfm and .cfml extensions. CFM stands for ColdFusion Markup, and CFML is ColdFusion Markup Language. The other options (cam/caml, cofm/cofml, cofn/cofnl) are not valid ColdFusion file extensions.
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.fnt
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.fonts
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.winfonts
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.wfnts
A
Correct answer
Explanation
Windows font files traditionally use the .fnt extension for bitmap and raster fonts. While TrueType fonts use .ttf, .fnt was the standard font extension in earlier Windows versions. The other options are not valid Windows font file extensions.