INTERVIEW QUESTIONS OPERATING SYSTEMS DETAILS

Question: What are system calls give examples also?

Answer: System calls are built on top of
the operating system.They are interact with kernel area of a operating system.they can also interact with the hardware part of a system like keyboard,mouse,printer,cpu etc

open()---->this is a system call which is used to open and create a file,and it returns a file descriptor.

read,seek,fork are common system call

System calls are built on top of
the operating system.They are interact with kernel area of a operating system.they can also interact with the hardware part of a system like keyboard,mouse,printer,cpu etc

open()---->this is a system call which is used to open and create a file,and it returns a file descriptor.

read,seek,fork are common system call Source: CoolInterview.com

An interface between the operating system and a process that allows a process to invoke operating system functions. Source: CoolInterview.com

System call is a command that know computer hardware. Source: CoolInterview.com

process control
file management
device management
information maintanence
communication Source: CoolInterview.com

System Calls are used to access system resources. It transfer the control from user level to kernel level. When a user want to access a resource (momery,cpu time etc) it first request through a system call to OS than the OS will decide what to do next.

Common examples of system call are read(), write() etc. Source: CoolInterview.com

If you have the better answer, then send it to us. We will display your answer after the approval.

Rules to Post Answers in CoolInterview.com:-

• There should not be any Spelling Mistakes.
• There should not be any Gramatical Errors.
• Answers must not contain any bad words.
• Answers should not be the repeat of same answer, already approved.
• Answer should be complete in itself.

Name :*
Email Id :*
Answer :*
Verification Code	Not readable? Load New Code
Enter the above shown code: *
	Inform me about updated answers to this question