Understanding Memory Organization: Matching Concepts

This question requires matching terms related to computer memory systems and addressing techniques presented in List I with their corresponding concepts in List II.

Explanation of Matches

Let's break down each item and find its correct match:

A. Address Space maps to IV. Virtual address

The Address Space, often referred to as the virtual address space, is the set of memory addresses that a program can use. It's an abstraction provided by the operating system and hardware, allowing programs to operate as if they have their own private memory.

B. Memory Space maps to III. physical address

Memory Space usually refers to the actual hardware memory available in the system. Accessing this space requires a physical address, which is the actual location in the main memory (RAM) where data is stored.

C. Cache Memory maps to I. Associative Mapping

Cache Memory is a small, fast memory that stores copies of frequently used data from main memory. Associative mapping is a cache memory organization technique where any block of main memory can be placed in any line of the cache. This requires checking the tag of each cache line to find the desired data.

D. Segmented Program maps to II. Logical address

A Segmented Program is one that is divided into variable-sized blocks called segments (e.g., code segment, data segment). Each segment is treated as a unit, and the program uses logical addresses to refer to locations within these segments.

Final Matching Summary

Based on the explanations, the correct matches are:

• A - IV (Address Space - Virtual address)
• B - III (Memory Space - physical address)
• C - I (Cache Memory - Associative Mapping)
• D - II (Segmented Program - Logical address)

Therefore, the correct option combines these matches.