Operating System Concepts Quiz

What is a process in an operating system?

• A program in execution

• A software application

• A thread in execution

• A hardware unit

Which of the following is NOT a process state?

• New

• Running

• Waiting

• Executed

What is the main difference between a process and a program?

• A process is a collection of threads

• A process is a program in execution

• A process is stored in secondary memory

• A program executes faster than a process

The Process Control Block (PCB) contains all the following information about a process EXCEPT:

• Process ID

• Process state

• File system structure

• CPU registers

What is process synchronization used for?

• To increase execution speed

• To avoid race conditions and ensure correct execution

• To improve CPU utilization

• To terminate a process

What is a thread?

• A lightweight process that shares resources with other threads

• A single process

• A process in memory

• A program running on multiple CPUs

In a multithreaded process, which of the following is NOT shared among threads?

• Code

• Data

• Registers

• Open files

Which of the following is NOT an advantage of multithreading?

• Faster execution

• Better CPU utilization

• More memory consumption

• Improved responsiveness

Which threading model allows multiple user threads to be mapped to multiple kernel threads?

• One-to-One

• Many-to-One

• Many-to-Many

• One-to-Many

What is a race condition?

• When a single process runs too fast

• When multiple threads try to access shared data simultaneously

• When a process takes too long to execute

• When multiple processes share the same process ID