Disk Operating System Questions with Answers | CSE | Page 4

The Disk Operating System (DOS) forms the foundation of many modern computing systems. These programming questions and answers on DOS cover essential topics like file management, command-line utilities, memory organization, and system architecture. Mastering DOS is crucial for computer science students and aspirants appearing for TCS, Wipro, Tech Mahindra, and other placement exams. Practicing operating system MCQs with explanations strengthens your understanding of basic system-level concepts and command syntax. Learn how DOS interacts with hardware and manages files efficiently through Disk Operating System questions with answers, an important topic in both academic and technical interview preparation.

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Q31

Which of the following applies to external DOS commands?

A External commands reside in RAM until called
B External commands are stored on disk separately from COMMAND.COM
C External commands must always be used with the /e switch
D External commands can only be executed from a batch file.

Answer: Option B

Q32

Which command is used to delete the directory that is empty?

A DEL *.*
B RD
C ERASE
D MD

Answer: Option B

Q33

 Which command will be used to display file and directory names only, without size, date, and time information?

A DIR/W
B DIR A:
C DIR/B
D DIR/S

Answer: Option C

Q34

 To organize files on a disk, MS-DOS separates them into areas called _____

A directories
B buckets
C areas
D area directories

Answer: Option A

Q35

 The _____ command allows you to modify the default prompt to provide other information

A prompt
B windows
C cursor
D click

Answer: Option A

Q36

What DOS program can you run to see which serial ports are detected?

A comdiag
B MSD
C command.com
D SDET

Answer: Option B

Q37

After doing a low-level format, what would be the next step in configuring the hard drive in a system?

A Format DOS partition
B Install operating system
C Configure DMA channel and back up interrupt
D Partition hard disk

Answer: Option D

Q38

Which of the following commands will take you directly to the root directory no matter what subdirectory you are currently in?

A CD \root
B CD\
C CD\..
D CD..

Answer: Option B

Q39

After trying to unload a TSR, you get an error message saying that other TSRs were loaded after the one you tried to remove. Which of the following commands could you use to see the current load order?

A MEM /P
B MEMMAKER
C MEM /C
D SYS:

Answer: Option C

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Disk Operating System Questions and Answers

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Disk Operating System Questions and Answers

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