Dividing the logical memory into the same-size blocks is called

Question

BlackTom AI · Accepted Answer

Paging divides logical memory into fixed-size pages, so the correct term for breaking logical (virtual) memory into same-size blocks is "pages."

1. Relevant concepts
- Logical memory (virtual address space): the address space seen by a process.
- Physical memory: actual RAM.
- Pages: fixed-size blocks of logical memory.
- Frames: fixed-size blocks of physical memory of the same size as pages.
- Page table: structure that maps pages (logical blocks) to frames (physical blocks).
- Backing store: secondary storage (disk) used to hold pages not currently in RAM.

2. Step-by-step reasoning
- Operating systems that use paging divide a process’s logical address space into equal-sized units called pages.
- The physical memory is divided into equal-sized units called frames. Page size = frame size.
- When a process needs memory, the OS loads required pages from backing store (disk) into available frames in physical memory and records the mapping in the page table.
- Since the question specifically asks about dividing "logical memory" into same-size blocks, we identify the term that names those logical blocks.

3. Intermediate/definition steps (no numeric calculation required)
- Logical blocks = pages.
- Physical blocks = frames.
- Each page maps to one frame via the page table; page replacement handles movement to/from backing store.

4. Why the correct answer is correct
- "Pages" is the standard term for same-size subdivisions of logical (virtual) memory in a paging system. The OS assigns pages to frames; thus pages are the logical blocks.

5. Why the other options are incorrect
- "Frames" are the same-size blocks of physical memory, not logical memory.
- "Backing store" is secondary storage (disk) used to store pages when not in RAM, not a subdivision of logical memory.
- "None of the mentioned" is incorrect because a correct option ("pages") is provided.

6. Conclusion
Therefore, the correct answer is pages, which matches the provided answer.

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