Master Memory Allocation Techniques in Operating Systems: Quiz and Study Guide

Question 1

What is a potential drawback of employing virtual memory management?

Accepted Answer

Increased complexity

Answer

Enhanced memory capacity

Answer

Diminished fragmentation

Answer

Boosted performance

Question 2

Which memory allocation technique divides memory into fixed-size blocks, all of which are the same size?

Accepted Answer

Partitioned Memory Allocation

Answer

Paged Memory Allocation

Answer

Segmented Memory Allocation

Answer

Virtual Memory Allocation

Question 3

Which of the following is NOT an advantage of virtual memory management?

Accepted Answer

Complete hardware independence

Answer

Increased perceived memory capacity

Answer

Improved system performance

Answer

Reduced memory fragmentation

Question 4

What is the term for the memory management technique that assigns memory to processes in non-contiguous blocks?

Accepted Answer

Segmented Memory Allocation

Answer

Paged Memory Allocation

Answer

Partitioned Memory Allocation

Answer

Virtual Memory Allocation

Question 5

What is the primary purpose of memory allocation techniques in operating systems?

Accepted Answer

To manage physical memory resources efficiently

Answer

To ensure that each process has access to a unique memory space

Answer

To prevent memory leaks and memory corruption

Answer

To establish a secure environment for executing programs

Question 6

Which memory allocation technique is generally considered the simplest and most basic?

Accepted Answer

Partitioned Memory Allocation

Answer

Paged Memory Allocation

Answer

Segmented Memory Allocation

Answer

Virtual Memory Allocation

Question 7

Which of the following is a technique used to mitigate external fragmentation in partitioned memory allocation?

Accepted Answer

Compaction

Answer

Buddy system

Answer

Paging

Answer

Segmentation

Question 8

What is the name of the mechanism used to translate virtual addresses into physical addresses in virtual memory management?

Accepted Answer

Page Table

Answer

Memory Management Unit (MMU)

Answer

Translation Lookaside Buffer (TLB)

Answer

Inversion Table

Question 9

What is a drawback of employing virtual memory management?

Accepted Answer

Increased overhead

Answer

Enhanced memory capacity

Answer

Reduced memory fragmentation

Answer

Accelerated memory access

Question 10

In real-time operating systems, which memory allocation strategy is most appropriate?

Accepted Answer

Contiguous memory allocation

Answer

Non-contiguous memory allocation

Answer

Virtual memory management

Answer

Dynamic memory allocation

Question 11

What primary advantage does non-contiguous memory allocation offer?

Accepted Answer

Enhanced memory utilization

Answer

Reduced fragmentation

Answer

Increased processing speed

Answer

Improved security

Question 12

In virtual memory management, what is the purpose of a page table?

Accepted Answer

Translating virtual addresses to physical addresses

Answer

Storing data from frequently accessed pages

Answer

Managing memory allocation for different processes

Answer

Preventing memory leaks

Question 13

Which memory allocation technique allows dynamic allocation and deallocation of memory as needed?

Accepted Answer

Dynamic memory allocation

Answer

Contiguous memory allocation

Answer

Non-contiguous memory allocation

Answer

Virtual memory management

Question 14

What is the main drawback of contiguous memory allocation?

Accepted Answer

External fragmentation

Answer

Internal fragmentation

Answer

Reduced memory utilization

Answer

Increased processing overhead

Question 15

In virtual memory management, how do logical addresses differ from physical addresses?

Accepted Answer

Logical addresses are used by the CPU, while physical addresses are used by the memory

Answer

Logical addresses are larger than physical addresses

Answer

Physical addresses are used by the CPU, while logical addresses are used by the memory

Answer

Logical and physical addresses are the same

Question 16

Which of the following is not a page replacement algorithm?

Accepted Answer

Round Robin

Answer

Least Recently Used (LRU)

Answer

First In First Out (FIFO)

Answer

Optimal Page Replacement

Question 17

What is the primary downside of employing a swapping technique for memory allocation?

Accepted Answer

Degraded performance

Answer

Fragmentation of memory

Answer

Increased complexity

Answer

Reduced security

Question 18

Identify the key advantage of using virtual memory.

Accepted Answer

Extends the available physical memory

Answer

Enhances system stability

Answer

Lowers memory access time

Answer

Eliminates memory fragmentation

Question 19

What is the purpose of a page table in virtual memory management?

Accepted Answer

Maps virtual addresses to physical addresses

Answer

Manages memory allocation

Answer

Handles memory protection

Answer

Stores data in memory

Question 20

Define the concept of memory fragmentation and explain how it impacts memory allocation.

Accepted Answer

Fragmentation occurs when memory is divided into unusable small pieces, resulting in inefficient memory usage

Answer

Reserving memory for future use, even if not currently needed

Answer

Memory allocation to multiple processes without considering their requirements

Question 21

Which technique is effective in reducing memory fragmentation?

Accepted Answer

Compaction

Answer

Swapping

Answer

Caching

Answer

Virtual memory

Question 22

How does efficient memory allocation contribute to the overall performance of an operating system?

Accepted Answer

Enhances process execution time, reduces system overhead, and improves overall stability

Answer

Eliminates the possibility of memory leaks

Answer

Reduces the need for additional hardware resources