UGC NET Questions (Paper – 1)

The Central Processing Unit is often called the brain of the computer because it executes program instructions and coordinates operations among hardware components. It includes an arithmetic logic unit for computations and a control unit for directing data flow. Without the CPU, software instructions cannot be processed into meaningful actions. Thus, the component described is the CPU.

Option A:
Option A, RAM, is primary memory that temporarily holds data and instructions but does not itself execute them. It works closely with the CPU but serves a different role.

Option B:
Option B is correct because textbooks consistently identify the CPU as the main unit responsible for carrying out arithmetic and logical operations and controlling other parts of the system.

Option C:
Option C, ROM, is non volatile memory used for storing firmware and does not actively process instructions at runtime.

Option D:
Option D, UPS, stands for uninterruptible power supply and provides backup power rather than performing any computational control.