Process Creation Diagram Quiz & Flashcards

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What does fork() return for the parent process?

Negative value

Positive value (correct)

PID value

Zero

Based on the provided text, what does the exit() system call do?

Allocates memory to a process

Terminates a process (correct)

Creates a new process

Saves the state of the process

In the process creation tree demonstrated in the diagram, which process executes concurrently with its parent?

Init process

Second process

Child processes (correct)

Parent process

What is used to identify and manage processes in general?

Process Identifier (pid) Signup and view all the answers

When does process termination occur?

When the exit() system call is invoked Signup and view all the answers

What does the process table contain according to the text?

Information about all loaded processes Signup and view all the answers

What does the 'Suspended' state signify in the context of process execution?

The process is ready for execution but has not been placed in the ready queue Signup and view all the answers

What is the characteristic of a 'Blocked' state in the context of process execution?

The process is waiting for an event to complete Signup and view all the answers

When does a process enter the 'Suspend Ready' state?

When the process is moved to secondary memory from main memory Signup and view all the answers

What happens when a process moves into the 'Suspend Wait' state?

It moves to secondary memory due to lack of main memory Signup and view all the answers

When does a process reach the 'Terminated' state?

When it completes its execution Signup and view all the answers

'Process Creation' involves creating processes in a system for what purpose?

For various system operations Signup and view all the answers

What are the main tasks involved in process management?

Creation, scheduling, and termination of processes Signup and view all the answers

Which part of the operating system allocates memory that processes can share and exchange information?

Heap Signup and view all the answers

What does the Text section in the process architecture contain?

Current activity represented by the Program Counter Signup and view all the answers

Which stage of a process is characterized by the process being newly created in primary memory from secondary memory?

New Signup and view all the answers

What does a process state define?

The condition of a process at a specific instant of time Signup and view all the answers

What is the main responsibility of the operating system in managing processes?

Manage all running processes, including scheduling and resource allocation Signup and view all the answers

How is a child process created in an operating system?

By executing a process creation system call Signup and view all the answers

What is the relationship between a parent process and a child process?

A parent process can have many children, but a child process can have only one parent process Signup and view all the answers

What happens when a new process is created in an operating system?

Parent and child processes share the same memory image, open files, and environment strings Signup and view all the answers

How is the Process Control Block (PCB) allocated during process creation?

It is allocated in a separate memory space for each process Signup and view all the answers

What is the purpose of assigning a unique Process Identifier (PID) to a new process?

To differentiate between parent and child processes Signup and view all the answers

How are parent and child processes managed in an operating system?

By identifying and managing via Process Identifier (PID) Signup and view all the answers

What is the purpose of a process control block (PCB) in a computer operating system?

To store information about a process Signup and view all the answers

Under what circumstances can a child process be terminated?

If its parent process requests for termination Signup and view all the answers

Why might a process be terminated for trying to write into a read-only file?

Because it violates the read-only property of the file Signup and view all the answers

What is the consequence of a process requiring more memory than currently available in the system?

The operating system forcefully terminates the process Signup and view all the answers

Why are child processes usually terminated when their parent process is terminated?

Because child processes depend on parent processes Signup and view all the answers

In what scenario would a process be terminated due to an I/O failure?

When encountering issues with input/output operations Signup and view all the answers

Study Notes

Process Creation and Management

fork() returns a process ID (PID) for the parent process, indicating the successful creation of a child process.
The exit() system call terminates a process and frees up resources associated with it.
The child process executes concurrently with its parent after the fork() call.
The operating system uses process identifiers (PIDs) to identify and manage processes.

Process States and Transitions

Process termination occurs when a process completes its execution or is forcibly terminated.
The process table contains essential information about each process, such as the PID, state, memory allocation, and CPU scheduling data.
The 'Suspended' state signifies that a process is temporarily halted but can be resumed.
A 'Blocked' state occurs when a process cannot continue executing, typically waiting for resource availability.
A process enters the 'Suspend Ready' state when it is ready to execute but has been suspended intentionally.
Moving into the 'Suspend Wait' state happens when a process waiting for an event or resource is suspended.
A process reaches the 'Terminated' state when it has completed execution or when it is explicitly killed.

Purpose and Tasks of Process Management

Process creation serves the purpose of allowing multitasking and resource management in a system.
Main tasks in process management include scheduling, resource allocation, and process synchronization.
The operating system allocates memory that processes can share, facilitating data exchange.

Process Architecture

The Text section in process architecture contains the executable code for the process.
The newly created stage of a process in primary memory from secondary memory is called the 'New' state.
A process state defines the current status of the process (e.g., running, waiting, suspended).

Operating System Responsibilities

The operating system's main responsibility in managing processes is to ensure fair CPU time distribution and efficient resource management.
A child process is created in an operating system via a fork() system call from the parent process.
The relationship between a parent process and a child process is typically hierarchical, with the parent controlling the child's execution.
When a new process is created, it receives its own Process Control Block (PCB) which includes relevant metadata.

Process Control Block (PCB)

The PCB is allocated during process creation to maintain the execution context of each process.
A unique Process Identifier (PID) is assigned to a new process to prevent conflicts and enable process management.
Parent and child processes are managed in an operating system through the PCB, which tracks their state and resource usage.

Termination Conditions

A child process can be terminated if the parent process ends or if it encounters a critical error.
A process may be terminated for attempting to write into a read-only file due to violation of file system permissions.
If a process requires more memory than is currently available, it may be terminated to prevent system instability.
Child processes are often terminated when their parent is terminated to avoid orphan processes.
I/O failures, such as device unavailable or errors in reading/writing, can result in the termination of a running process.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

This quiz covers the events that lead to process creation in operating systems, including user requests, system initialization, batch job initialization, and execution of process creation system calls. It also explains the relationship between parent and child processes in the context of fork() function.

Process Creation in Operating Systems

Choose a study mode