Explanation

• DOS (Disk Operating System) is a single-user operating system.
• It is designed for one user at a time.
• DOS uses a Command-Line Interface (CLI) instead of a graphical interface.

Additional information:

• Examples of Multi-user OS: Windows, Linux, UNIX, macOS

Last verified on 06-08-2026

Explanation

If a question lacks sufficient information to reach a definitive conclusion is "Data inadequate" or "Cannot be determined". 

Explanation

• Data transfer between computers is carried out through communication protocols.
• A protocol is a set of rules that allows computers to communicate and exchange data.
• Common network protocols ensure reliable and secure communication.
• Protocols are essential for the Internet and computer networks.

Last verified on 04-08-2026

Explanation

• An Operating System manages and controls all computer hardware and software resources.
• It acts as an interface between the user and the computer hardware.
• The OS manages memory, files, devices, and running programs.
• Without an Operating System, a computer cannot function properly for users.
• Common operating systems include Windows, Linux, and macOS.

Last verified on 04-08-2026

Explanation

• The EDX register consists of 4 bytes (32 bits).
• Full Size: 4 bytes / 32 bits (EDX)
• Lower Half: 2 bytes / 16 bits (DX)
• Byte Halves: 1 byte / 8 bits each (DH for high byte, DL for low byte of DX)