Operating System Concepts: Process Execution Quiz

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Questions and Answers

What is a process in the context of an operating system?

A program's stack containing temporary data

A program's text section

A program that is stored on disk

A program in execution (correct)

What does the text section of a process contain?

Global variables

Heap containing dynamically allocated memory

Program code (correct)

Processor registers

When does a program become a process?

When its text section is created

When the program counter reaches the end of the code

When it is stored on disk

When an executable file is loaded into memory (correct)

What is the purpose of the stack in a process?

To store temporary data like function parameters and local variables Signup and view all the answers

How is the execution of a program initiated to create a process?

Via GUI mouse clicks or command line entry of its name Signup and view all the answers

What is the state of a process when it is being created?

New Signup and view all the answers

Which piece of information is NOT typically found in a Process Control Block (PCB)?

Disk storage information Signup and view all the answers

What is the goal of the process scheduler?

Maximize CPU use Signup and view all the answers

What happens during a context switch in the operating system?

The system saves the state of the old process and does useful work during the switch Signup and view all the answers

What are some mechanisms that a system must provide for operations on processes?

Process creation and termination Signup and view all the answers

What is the primary function of a process in an operating system?

To provide a sequential execution of a program Signup and view all the answers

Which part of a process contains the program code?

Text section Signup and view all the answers

When does a program become an active process in an operating system?

When the program is loaded into memory Signup and view all the answers

What is the primary role of the stack in a process?

Storing temporary data like function parameters and local variables Signup and view all the answers

Which action initiates the execution of a program to create a process in an operating system?

Loading the executable file into memory Signup and view all the answers

What is the main purpose of a context switch in an operating system?

To save the state of the old process and load the saved state for the new process Signup and view all the answers

Which information is typically NOT found in a Process Control Block (PCB)?

Disk storage details of the process Signup and view all the answers

In the context of operating systems, what is the role of the Ready queue?

It maintains a set of all processes residing in main memory, ready and waiting to execute Signup and view all the answers

When does a context switch occur in an operating system?

When the CPU switches from one process to another Signup and view all the answers

What is one role of the Process Creation mechanism in an operating system?

To create child processes, forming a hierarchical structure Signup and view all the answers

Study Notes

Process in Operating System

A process is a program in execution, it is a unit of work that is performed by the operating system.
The text section of a process contains the program code.

Process Creation

A program becomes a process when it is loaded into memory and the operating system allocates resources to it.
The execution of a program is initiated to create a process when the operating system allocates memory and resources to it.
The state of a process when it is being created is called 'newborn' or 'new'.

Process Control Block (PCB)

A Process Control Block (PCB) is a data structure that contains information about a process, such as its current state, memory allocation, and open files.
The PCB does not typically contain the program code.

Process Scheduling

The goal of the process scheduler is to allocate the CPU time to different processes, so that each process can execute its instructions.
During a context switch, the operating system saves the current state of the process, and restores the saved state of another process.

Process Operations

A system must provide mechanisms for operations on processes, such as process creation, process termination, and process synchronization.
The primary function of a process in an operating system is to execute a program and perform some action.

Stack

The stack is a region of memory that is used to store data and function calls.
The primary role of the stack is to store the local variables and function calls of a process.

Ready Queue

The Ready queue is a data structure that contains a list of processes that are ready to execute.
The Ready queue is used by the process scheduler to select the next process to execute.

Context Switch

A context switch occurs when the operating system switches the CPU from one process to another.
The main purpose of a context switch is to allow multiple processes to share the CPU and improve system performance.

Process Creation Mechanism

The Process Creation mechanism is responsible for creating a new process and allocating resources to it.
The Process Creation mechanism plays a crucial role in the creation of new processes in an operating system.

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Description

Test your understanding of the process concept in operating systems with this quiz. Explore topics such as program execution, process states, and program components.