ITPEC FE Morning April 2019 Question 16

Dividing virtual and real memory into fixed-length blocks — paging manages memory in fixed-size pages mapped to equal-size page frames.

The virtual address space is split into pages and real memory into page frames of the same size. A page table maps each page to a frame, so a program need not sit in one contiguous area, and pages not in real memory are brought in from auxiliary storage on a page fault.

Answer (d)

Why not others:

• •(a) — grouping several records into one block for reading and writing on auxiliary storage is blocking
• •(b) — dividing main memory into banks that can be accessed simultaneously is memory interleaving
• •(c) — moving a program to another area of main memory for execution is relocation

Key rule: Paging uses fixed-length pages; segmentation uses variable-length segments that follow the program's logical parts.

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