Computer Knowledge
Computer File Systems
1,249 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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A fight
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Tactical Image Figure Format
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Technical Insitute for File Formats
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Tagged Image File Format
D
Correct answer
Explanation
TIFF stands for Tagged Image File Format, a widely used file format for storing images, particularly in publishing and photography. It supports multiple layers and various color depths.
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Source file
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Directories
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Binary files
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All the above
D
Correct answer
Explanation
In the context of XML or document processing, an Element can be any of these: source files, directories, or binary files. The question is asking about possible constituents or components that might be classified as elements in a document model or file system context.
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Only for an outfile defined as printer
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For any outfile that we write to
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Both a & b
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None of the above
A
Correct answer
Explanation
In Easytrieve, the MASK statement is specifically used for formatting output on printer files. It defines how data fields should appear when printed. MASK cannot be used on arbitrary output files, only those defined as printer files.
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Only for an outfile defined as printer
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For any outfile that we write to
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Both a & b
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None of the above
A
Correct answer
Explanation
This is a duplicate of question 131878. MASK is used only for printer output files in Easytrieve for formatting purposes. It cannot be used on arbitrary output files.
B
Correct answer
Explanation
File-AID is designed for browsing, editing, and managing dataset contents. Alternate index creation is a VSAM definition task that requires IDCAMS or other VSAM management utilities, not File-AID's data manipulation capabilities.
A
Correct answer
Explanation
File-AID is a mainframe utility that provides robust capabilities for comparing files and datasets to identify differences, making the statement true.
A
Correct answer
Explanation
File-AID allows the use of masking characters when searching or working with PDS members, enabling flexible member selection and management.
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TALLY
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COUNT
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TOTAL
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AVERAGE
A
Correct answer
Explanation
The TALLY function in File-AID is specifically used to count records and provide record count statistics. Functions like COUNT, TOTAL, and AVERAGE are either not standard File-AID commands or serve different purposes.
B
Correct answer
Explanation
GDG (Generation Data Group) creation and management requires IDCAMS or JCL with proper DCB parameters. File-AID is for browsing and editing existing dataset contents, not for creating GDG base definitions or managing generations. The claimed answer 'False' is correct.
A
Correct answer
Explanation
File-AID supports both interactive online mode and batch mode processing via JCL for automation and large-scale operations.
B
Correct answer
Explanation
In COBOL file status key values, '35' indicates that the specified file is not found or is an empty optional file that cannot be opened, representing the 'Empty File' error condition.
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There is no lock system with retention period.
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Cannot be deleted, nor the retention period changes
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Can be deleted and the retention period can be changes
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None of the above
A
Correct answer
Explanation
The question asks about file locking with retention. Option A states there is no lock system with retention period, which is correct in the context described. The other options describe incorrect behaviors.
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Support creating both thin (files that share original blocks) and thick (files that are full copies of the source file) clones
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Support a minimum of 2000 clones
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Clones must be writeable
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All the above
D
Correct answer
Explanation
CMR10 supports cloning files in both thin (shared blocks) and thick (full copy) modes, supports a minimum of 2000 clones, and clones must be writable. Since all these features are supported, Option D 'All the above' is correct.
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Pushable Document File
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Portable File for Document
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Portable Document Format
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Printable Document Format
C
Correct answer
Explanation
PDF stands for Portable Document Format, which is a file format developed by Adobe to present documents in a manner independent of application software, hardware, and operating systems. The other options (Pushable, File for Document, Printable) are incorrect expansions of the acronym.
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INDEXED
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RELATIVE
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SEQUENTIAL
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All of the above
D
Correct answer
Explanation
All three file organization types (INDEXED, RELATIVE, and SEQUENTIAL) can be opened in all four modes (INPUT, I-O, OUTPUT, EXTEND) in COBOL. This flexibility allows programmers to choose the most appropriate file organization for their data access needs while maintaining full operational capability.