Memory management basics in Intro to Computing - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is memory management in a computer?

Memory management is the process of controlling and coordinating computer memory, assigning portions to programs when needed, and freeing it when not in use, so the system runs efficiently.

beginner

What is RAM and why is it important?

RAM (Random Access Memory) is the computer's short-term memory where data and programs in use are stored temporarily. It is important because it allows quick access to data, making the computer fast and responsive.

beginner

Explain the difference between volatile and non-volatile memory.

Volatile memory loses its data when power is off (like RAM). Non-volatile memory keeps data even without power (like hard drives or SSDs).

intermediate

What is a memory leak?

A memory leak happens when a program keeps using memory but does not release it back to the system, causing less memory available and slowing down or crashing the computer.

beginner

How does the operating system help with memory management?

The operating system manages memory by tracking which parts are free or used, allocating memory to programs, and freeing it when programs finish, ensuring smooth multitasking.

Which type of memory loses its data when the computer is turned off?

A Non-volatile memory

B Cache memory

C Volatile memory

D Virtual memory

Volatile memory, like RAM, loses its data when power is off.

What is the main role of RAM in a computer?

A Store data temporarily for quick access

B Store data permanently

C Manage files on the hard drive

D Control the display screen

RAM stores data temporarily so the CPU can access it quickly.

What problem occurs when a program does not release memory it no longer needs?

A Overclocking

B Fragmentation

C Cache miss

D Memory leak

A memory leak happens when memory is not freed, reducing available memory.

Which component is responsible for managing memory allocation in a computer?

A Hard Drive

B Operating System

C CPU

D Power Supply

The operating system manages memory allocation and freeing.

Which of the following is an example of non-volatile memory?

A SSD

B Cache

C CPU registers

D RAM

SSD stores data permanently even when power is off.

Describe how memory management works in a computer using a real-life analogy.

Think about how a hotel or parking lot manages space for guests or cars.

Explain what happens during a memory leak and why it can cause problems.

Imagine a sink that keeps filling with water but the drain is blocked.