UGC NET Questions (Paper – 1)

Statements A, B, D and E correctly describe the roles of CPU, RAM, secondary storage and the ALU, while C and F misclassify devices. The CPU controls execution, RAM is volatile main memory, hard disks and SSDs are secondary storage, and the ALU is part of the CPU. A keyboard and mouse are input, not output devices, and a monitor is an output device, not used to capture audio. Therefore the set of true statements is A, B, D and E only.

Option A:
Option A is correct because it includes all and only the statements that accurately describe hardware components. It recognises the CPU and ALU roles, volatile RAM and secondary storage devices. By excluding C and F, it avoids incorrect classification of keyboard, mouse and monitor.

Option B:
Option B is incorrect because it adds C, which wrongly labels keyboard and mouse as output devices. Including a false statement makes the entire combination invalid even though A, B and D are true.

Option C:
Option C is incorrect because it includes F, which incorrectly describes a monitor as an input device for audio. This option mixes true statements with two false ones (C and F), so it cannot be the correct answer.

Option D:
Option D is incorrect because it omits A, leaving out the fundamental statement about the CPU’s control function. Although B, D and E are true, missing A means not all correct statements are represented in this combination.