Beginner Topic 5 of 51 Operating Systems
Processes
Running instances of programs with their own resources.
How it works
A process is a program in execution with its own address space (code, heap, stack), registers, open files and PID. The OS isolates processes from each other.
Where it is used
Each running app or command.
Common pitfall
Zombie processes remain when parents do not reap children.
Where it fits in the course
Processes is topic 5 of 51 in Operating Systems, rated Beginner. It follows System Calls. The next topic is Process States.
Practice and explore
- Open the interactive lesson, with a mini quiz.
- Take the Operating Systems quiz.
How to study this topic
- Read the explanation above and restate the definition in your own words.
- Open the interactive lesson and answer its mini quiz.
- Read the common pitfall, then write a short example that avoids it.
- Check your understanding in the Operating Systems quiz, and revisit the topic if you miss a question.
Frequently asked questions
What is Processes?
Running instances of programs with their own resources. It belongs to Operating Systems and is a beginner-level topic.
Where do people use Processes?
Each running app or command.
What is the most common mistake with Processes?
Zombie processes remain when parents do not reap children.
What should I learn before this topic?
Start with System Calls, the topic just before it in Operating Systems.
How can I practice it?
Answer the mini quiz in the interactive lesson, then take the Operating Systems quiz.
Is Processes hard to learn?
It is a Beginner topic, so it works as an entry point. If the terms are new, read the explanation twice and try the visualizer before the quiz.
How long does it take to learn Processes?
Most learners can read the explanation and finish the interactive lesson in under an hour. Fluency comes from applying the idea, so plan a few short practice sessions with the quiz.
Which topics are related to Processes?
System Calls, Process States, User Mode vs Kernel Mode are closely connected. The full list is in the related topics section of this page.
What should I study after Processes?
Continue with Process States, the next topic in Operating Systems.
Related topics
- System Calls (Operating Systems)
- Process States (Operating Systems)
- User Mode vs Kernel Mode (Operating Systems)
- Process Control Block (Operating Systems)
- Communicating Sequential Processes (Concurrency & Parallelism)
- Stochastic Processes (Math for Computing)