India Exam Junction
[PSSSB Revenue Patwari, 2023]
1. Which of the following statements is/are correct about the main memory of a computer?
Data gets lost from the main memory when power is switched off
Main memory is slower than the secondary memory
Main memory is very inexpensive memory
All of the above
Correct Answer :
Data gets lost from the main memory when power is switched off
Solution
Data gets lost from the main memory when power is switched off: This is correct because the main memory (RAM) is volatile memory, meaning it requires power to retain data. When the computer is turned off, any data stored in RAM is lost.
Main memory is slower than the secondary memory: This is incorrect. In fact, main memory (RAM) is much faster than secondary memory (like hard drives or SSDs).
Main memory is very inexpensive memory: This is incorrect. Main memory (RAM) is relatively expensive compared to secondary memory.