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.
Assuming the given statement to be true, find which of the following conclusions among given two is/are true.
Statement:
P ≤ T, P �...
Select the Venn diagram that best illustrates the relationship between the following classes.
Engineers, Players, Poets
Complete the given series by replacing ‘?’
3, 8, 14, 21, 29, ‘?’
What should come in place of '?' in the given series?
10 59 353 ? 12701 76205 457229
Pointing at a girl, Seema said, “She is my father’s mother’s husband’s only son’s daughter.” How is that girl related to Seema?
...This question has two statements followed by two conclusions numbered I and II. You have to take the given statements to be true even if they seem to be...
From amongst the figures (A), (B), (C), (D) and (E), select the figure which satisfies the same conditions of placement of the dots as in figure (X)
A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
QRST, UVWX, YZAB, CDEF,?
Which of the following letter-clusters will replace the question mark (?) in the given series?
FUV, IXW, LAX, ?, RGZ
In the following equation, which of the two signs will be interchanged to get the correct equation?
119 - 21 ÷ 7 + 117 × 3 = 11