005 - The DOS Commands We Need To Know

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005 - The DOS Commands We Need To Know - Quiz

According to the A+ OS Technologies exam objectives, you need to know the following MS-DOS commands and terms:


Questions and Answers
  • 1. 

    This DOS command isn't required for DOS or Windows to start

    • A.

      COMMAND.COM

    • B.

      CONFIG.SYS

    • C.

      EMM386.EXE

    Correct Answer
    B. CONFIG.SYS
    Explanation
    CONFIG.SYS is not required for DOS or Windows to start. CONFIG.SYS is a text file that contains configuration commands for the operating system. It is used to set various system parameters and load device drivers during the boot process. However, it is not essential for the operating system to start functioning. DOS or Windows can still start without CONFIG.SYS, although certain system settings and device drivers may not be loaded. COMMAND.COM is the command interpreter for DOS, and EMM386.EXE is a memory manager for DOS. Both of these files are necessary for DOS or Windows to start.

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  • 2. 

    This DOS command displays the DOS command prompt, contains the internal DOS commands, and is required for DOS and Windows 3.x to boot.

    • A.

      CONFIG.SYS

    • B.

      EMM386.EXE

    • C.

      COMMAND.COM

    Correct Answer
    C. COMMAND.COM
    Explanation
    COMMAND.COM is the correct answer because it is the DOS command interpreter that displays the DOS command prompt and contains the internal DOS commands. It is also required for DOS and Windows 3.x to boot. CONFIG.SYS is a system configuration file, while EMM386.EXE is a memory manager for DOS.

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  • 3. 

    This DOS command enables expanded memory and allows the use of upper memory as system memory.

    • A.

      COMMAND.COM

    • B.

      CONFIG.SYS

    • C.

      EMM386.EXE

    Correct Answer
    C. EMM386.EXE
    Explanation
    EMM386.EXE is the correct answer because it is a DOS command that enables expanded memory and allows the use of upper memory as system memory. This command is typically used in the CONFIG.SYS file to load the EMM386.EXE driver, which then provides access to expanded memory and allows programs to utilize the upper memory for better system performance.

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  • 4. 

    This DOS commamnd is the boot sequence for a DOS system, is an executable binary file (in other words, a program) that, when the operating system is booted (started), processes instructions that tell the operating system how the computer is set up.

    • A.

      MSDOS.SYS

    • B.

      IO.SYS

    • C.

      CONFIG.SYS

    • D.

      COMMAND.COM

    • E.

      AUTOEXEC.BAT

    Correct Answer
    B. IO.SYS
    Explanation
    IO.SYS is the correct answer because it is the binary file that is part of the boot sequence for a DOS system. It is an executable program that processes instructions to set up the computer when the operating system is booted.

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  • 5. 

    This DOS commamnd is an important system file on MS-DOS and Windows 9x systems. It is run after IO.SYS. In MS-DOS, it contains the core operating system code, the kernel. IO.SYS MSDOS.SYS CONFIG.SYS COMMAND.COM AUTOEXEC.BAT

    • A.

      IO.SYS

    • B.

      MSDOS.SYS

    • C.

      CONFIG.SYS

    • D.

      COMMAND.COM

    • E.

      AUTOEXEC.BAT

    Correct Answer
    B. MSDOS.SYS
    Explanation
    MSDOS.SYS is the correct answer because it is the system file that contains the core operating system code, the kernel, in MS-DOS. It is an important file that is run after IO.SYS and is essential for the functioning of the operating system on MS-DOS and Windows 9x systems.

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  • 6. 

    This DOS command is a system file used with MS-DOS and OS/2 that is loaded each time the computer first boots up. This file controls components connected to the computer such as memory and other hardware devices.

    • A.

      IO.SYS

    • B.

      MSDOS.SYS

    • C.

      CONFIG.SYS

    • D.

      COMMAND.COM

    • E.

      AUTOEXEC.BAT

    Correct Answer
    C. CONFIG.SYS
    Explanation
    CONFIG.SYS is the correct answer because it is a system file used with MS-DOS and OS/2 that is loaded each time the computer first boots up. This file is responsible for controlling components connected to the computer such as memory and other hardware devices. It contains configuration settings and device drivers that are necessary for the proper functioning of the system.

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  • 7. 

    This DOS command is the filename of the default operating system shell for DOS operating systems and the default command line interpreter on 16/32-bit versions of Windows (9x/Me).

    • A.

      IO.SYS

    • B.

      MSDOS.SYS

    • C.

      CONFIG.SYS

    • D.

      COMMAND.COM

    • E.

      AUTOEXEC.BAT

    Correct Answer
    D. COMMAND.COM
    Explanation
    COMMAND.COM is the correct answer because it is the filename of the default operating system shell for DOS operating systems and the default command line interpreter on 16/32-bit versions of Windows (9x/Me). It is responsible for executing commands and running programs in the DOS environment.

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  • 8. 

    This DOS commandis a system file found originally on the MS-DOS operating system. It is a plain-text batch file that is located in the root directory of the boot device

    • A.

      IO.SYS

    • B.

      MSDOS.SYS

    • C.

      COMMAND.COM

    • D.

      CONFIG.SYS

    • E.

      AUTOEXEC.BAT

    Correct Answer
    E. AUTOEXEC.BAT
    Explanation
    The correct answer is AUTOEXEC.BAT. This is a system file that was originally found on the MS-DOS operating system. It is a plain-text batch file that is located in the root directory of the boot device.

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  • 9. 

    This DOS command changes the current directory.

    • A.

      CD:

    • B.

      DEL:

    • C.

      DELTREE:

    • D.

      ECHO:

    • E.

      EDIT:

    Correct Answer
    A. CD:
    Explanation
    The correct answer is CD because CD is a DOS command that is used to change the current directory. By typing "CD" followed by the desired directory path, the user can navigate to a different directory within the file system.

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  • 10. 

    This DOS command allows you to remove one or more files or folders from permanent storage, such as a disk.

    • A.

      CD:

    • B.

      DEL:

    • C.

      DELTREE:

    • D.

      ECHO:

    • E.

      EDIT:

    Correct Answer
    B. DEL:
    Explanation
    The correct answer is DEL:. The DEL: command is used in DOS to delete one or more files or folders from permanent storage, such as a disk. This command allows the user to remove unwanted files or folders and free up space on the storage device.

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  • 11. 

    This DOS command can be used to delete a directory or folder and all its subdirectories or subfolders.

    • A.

      CD:

    • B.

      DEL:

    • C.

      DELTREE:

    • D.

      ECHO:

    • E.

      EDIT:

    Correct Answer
    C. DELTREE:
    Explanation
    The correct answer is DELTREE. The DELTREE command is used in DOS to delete a directory or folder and all its subdirectories or subfolders. This command is useful when you want to completely remove a directory and all its contents from the system. It recursively deletes all the files and subdirectories within the specified directory, ensuring that everything within the directory is removed.

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  • 12. 

    This command turns the display or commands in a batch file on or off, and it can be used in a batch file to display a message.

    • A.

      CD:

    • B.

      DEL:

    • C.

      DELTREE:

    • D.

      ECHO:

    • E.

      EDIT:

    Correct Answer
    D. ECHO:
    Explanation
    The ECHO: command is used to display messages or commands in a batch file. It can be used to provide information or instructions to the user. By using the ECHO: command, the display of commands in a batch file can be turned on or off. This command is useful for displaying messages or instructions during the execution of a batch file.

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  • 13. 

    This command opens a text-editor utility that can be used to create new files or modify existing files.

    • A.

      CD:

    • B.

      DEL:

    • C.

      DELTREE:

    • D.

      ECHO:

    • E.

      EDIT:

    Correct Answer
    E. EDIT:
    Explanation
    The correct answer is EDIT. The command EDIT opens a text-editor utility that allows users to create new files or modify existing files. This utility provides a user-friendly interface for editing text and is commonly used for writing and editing code, scripts, or other text-based files. It is a versatile command that helps users manage and manipulate their files effectively.

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  • 14. 

    Together with the FORMAT command, the FDISK command is one of the most important DOS commands that is still in use. FDISK is used to create and manage primary, extended, and logical partitions on a hard drive.

    • A.

      RD:

    • B.

      MEM:

    • C.

      MD:

    • D.

      FDISK:

    • E.

      FORMAT:

    Correct Answer
    C. MD:
    Explanation
    The correct answer is MD because MD is the command used in DOS to create a new directory or folder. The given explanation states that FDISK is used to create and manage partitions on a hard drive, which is unrelated to creating directories.

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  • 15. 

    This command creates (makes) a new directory.

    • A.

      MD:

    • B.

      FDISK:

    • C.

      FORMAT:

    • D.

      MEM:

    • E.

      RD:

    Correct Answer
    A. MD:
    Explanation
    The correct answer is MD. This command is used to create a new directory or folder in a file system.

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  • 16. 

    This command displays the amount of memory that is installed and the amount that is available in conventional, extended, expanded, and upper memory areas.

    • A.

      FDISK:

    • B.

      FORMAT:

    • C.

      MD:

    • D.

      MEM:

    • E.

      RD:

    Correct Answer
    C. MD:
    Explanation
    The correct answer is MD. The MD command is used to create a new directory or folder in a file system. It does not display the amount of memory installed or available. The other options, FDISK, FORMAT, and MEM, are also not relevant to the given statement.

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  • 17. 

    This command removes an existing directory.

    • A.

      FDISK:

    • B.

      FORMAT:

    • C.

      MD:

    • D.

      RD:

    • E.

      MEM:

    Correct Answer
    D. RD:
    Explanation
    The command "RD:" is the correct answer because it is used to remove an existing directory. The other commands listed (FDISK, FORMAT, MD, and MEM) do not have the functionality to remove directories.

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  • 18. 

    This command is used to rename a file or directory. You must conform to the 8.3 naming convention of MS-DOS when using this command. (The 8.3 naming convention refers to a filename in which the prefix does not exceed 8 characters and the suffix does not exceed 3 characters.) 

    • A.

      VER:

    • B.

      TYPE:

    • C.

      SETVER:

    • D.

      SET:

    • E.

      REN:

    Correct Answer
    E. REN:
    Explanation
    The correct answer is REN. This command is used to rename a file or directory. It is important to conform to the 8.3 naming convention of MS-DOS when using this command, which means the filename should have a prefix of 8 characters or less and a suffix of 3 characters or less.

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  • 19. 

    This command is used to insert a string value into a command variable that can be accessed by another program or batch file.

    • A.

      VER:

    • B.

      TYPE:

    • C.

      SETVER:

    • D.

      SET:

    • E.

      REN:

    Correct Answer
    D. SET:
    Explanation
    The SET command is used to assign a value to a variable in a batch file. In this context, it can be used to insert a string value into a command variable that can be accessed by another program or batch file. This allows for the sharing of data between different programs or scripts, making the SET command a useful tool for inter-program communication.

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  • 20. 

    This command displays the version of the running version of MS-DOS and allows the running version to be set to that needed by real-mode programs.

    • A.

      VER:

    • B.

      TYPE:

    • C.

      SETVER:

    • D.

      SET:

    • E.

      REN:

    Correct Answer
    C. SETVER:
    Explanation
    SETVER is a command in MS-DOS that displays the version of the running MS-DOS and allows the user to set the running version to the one required by real-mode programs. This command is useful when running programs that are designed to run on specific versions of MS-DOS, as it ensures compatibility by setting the appropriate version.

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  • 21. 

    This command displays the contents of a file on the display.

    • A.

      VER:

    • B.

      TYPE:

    • C.

      SETVER:

    • D.

      SET:

    • E.

      REN:

    Correct Answer
    B. TYPE:
    Explanation
    The TYPE command is used to display the contents of a file on the display.

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  • 22. 

    This command reports the running version of MS-DOS, which may not be the installed version of MS-DOS.

    • A.

      VER:

    • B.

      TYPE:

    • C.

      SETVER:

    • D.

      SET:

    • E.

      REN:

    Correct Answer
    A. VER:
    Explanation
    The VER command is used to report the running version of MS-DOS. It displays the version number of the operating system that is currently running on the computer. However, it is important to note that the running version may not necessarily be the same as the installed version of MS-DOS. This means that even though the VER command may report a certain version, it does not guarantee that the same version is installed on the system.

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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 29, 2009
    Quiz Created by
    Shawnbharris

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