Question

Kernel mode operation is also called as ________.

• A. Interactive mode
• B. System mode
• C. User mode
• D. Symmetric mode

Hint:

Remember: \[ \text{User Mode} \rightarrow \text{Limited Privileges} \] \[ \text{Kernel Mode} \rightarrow \text{Full Privileges} \] Kernel Mode is also called System Mode or Supervisor Mode.

Answer 1

The Correct Option is B

Step 1: Understand User Mode.
User programs such as browsers, editors, and games execute in User Mode. In this mode:
• Direct hardware access is restricted.
• Privileged instructions cannot be executed.
• System calls are required to access kernel services.

Step 2: Understand Kernel Mode.
Kernel Mode is the privileged operating mode of the CPU. In this mode:
• All memory locations can be accessed.
• Hardware devices can be controlled directly.
• System-level instructions can be executed.

Step 3: Analyze the options.

• Interactive Mode – Not a standard OS execution mode.
• System Mode – Another name for Kernel Mode.
• User Mode – Different from Kernel Mode.
• Symmetric Mode – Not applicable here.

Step 4: Write the final conclusion.
Since Kernel Mode is also known as System Mode, \[ {\text{Kernel Mode} = \text{System Mode}} \] Hence option (B) is correct.