Which of the following describes the operational concept of a 'Virtual Memory'?
A. A cloud-based storage system that bypasses the local operating system.
B. An extremely large main memory array made of high-speed SRAM.
C. A dedicated memory chip installed exclusively inside advanced graphics cards.
D. An illusion of an extremely large main memory achieved by using a part of secondary storage.
Answer: Option D
Solution (By JKSSB Mock Tests)
Virtual memory is a memory management technique that uses secondary storage (like an HDD or SSD) to simulate additional RAM, allowing programs to run even if they exceed physical memory capacity.
Explanation:
The Program Counter is a specialized processor register that holds the memory address of the next sequential instruction slated for execution.
Explanation:
The memory bus (or front-side bus) is the data path that carries information between the CPU and the main memory (RAM). It determines the bandwidth and speed of data transfer.
Explanation:
When the CPU looks for data in the cache and fails to find it (a cache miss), it suffers a time delay penalty because it must fetch that data from the slower system RAM.
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