Question
Which of the following accurately describes the role of
virtual memory in modern operating systems?Solution
Detailed Explanation:Virtual memory is a memory management technique that gives the illusion of a larger memory space than physically available. It does this by using disk space as an extension of RAM, enabling processes to run even when their memory requirements exceed the physical memory's capacity. This is achieved through paging and swapping mechanisms, which divide memory into fixed-size pages and swap them between RAM and disk storage as needed. Virtual memory is essential for multitasking, as it isolates processes, prevents conflicts, and ensures efficient utilization of memory resources. It also enables features like memory protection, allowing secure execution of multiple programs simultaneously. Why Other Options Are Incorrect:
- Option A: Virtual memory complements physical memory but does not eliminate its need. Physical RAM is still required for efficient execution.
- Option C: Paging is the primary method used, often combined with segmentation for added flexibility. Virtual memory does not replace paging.
- Option D: Virtual memory is not restricted to distributed systems; it is a fundamental feature of most modern operating systems.
- Option E: Memory allocation algorithms are still required to manage physical and virtual memory effectively.
Which port in India hosted the country's first 1 MW green hydrogen plant in 2025?Â
Which automobile company and the food order delivery platform, Zomato have come together in a strategic association to ensure a green and sustainable m...
Which organization launched the world’s first wooden satellite, LignoSat , in collaboration with Sumitomo Forestry?
The Pradhan Mantri Kisan Samman Nidhi (PM-KISAN) scheme was launched in which year?
What percentage of India’s digital payments were processed through UPI in 2024?
What significant milestone did Pakistan achieve at the United Nations on January 1, 2025?
Which state ranked first in UPI transaction intensity according to the RBI’s September 2025 bulletin?Â
- Which Indian state has launched a ₹1,000 crore Green Hydrogen Policy to boost clean energy production?
Mobile manufacturing, IT hardware, pharma drugs, bulk drugs, medical devices, and telecom among top-performing sectors.So far, ______ applications have...
What was the share of US-based Foreign Portfolio Investors in India’s total foreign holdings in January 2026?Â