Checking the DOS Version While working in MS-DOS, which command displays the operating system version information at the prompt?

Introduction / Context:
Knowing the DOS version helps determine available features, compatible drivers, and memory managers. DOS provides a simple built-in command to display this information without external utilities.

Given Data / Assumptions:

• User is at a DOS prompt (COMMAND.COM).
• Standard internal commands are available.

Concept / Approach:
The internal command VER prints the DOS version string. It is a quick diagnostic tool to confirm which DOS release is running and sometimes reports related shell/version details depending on the implementation.

Step-by-Step Solution:
At the C:\> prompt, type VER and press Enter.Observe output such as “MS-DOS Version 6.22”.Use this information when selecting compatible software and drivers.

Verification / Alternative check:
Running HELP or consulting CONFIG.SYS/AUTOEXEC.BAT may also hint at version-specific utilities, but VER is the authoritative quick check.

Why Other Options Are Wrong:
DATE (Option A) changes/displays the date, not OS version.DISK (Option C) is not a standard DOS command for version display.FORMAT (Option D) prepares media and will not reveal version information.

Common Pitfalls:

• Confusing VER with external tools that may spoof version info; VER is built-in and consistent.
• Assuming Windows DOS boxes (NTVDM/Command Prompt) show the same as pure MS-DOS; behavior can differ in later Windows.

Final Answer:
VER command