NIMCET 2012 — Computer PYQ

The correct answer is (c) fast and expensive.

Logic:

In the computer memory hierarchy, as we move closer to the CPU, the speed and cost per unit of storage increase, while the capacity decreases.

We can represent the relationship between Speed ($S$) and Cost ($C$) for Primary ($P$) and Secondary ($M$) memory using the following inequalities:

Where:

• $S_P,S_M$: Speed of Primary and Secondary memory.

• $C_P,C_M$: Cost per unit (e.g., per GB) of Primary and Secondary memory.

Therefore, Primary storage (like RAM) is faster but significantly more expensive than Secondary storage (like HDD or SSD).