Codeprg: OperatingSystem

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Friday, 8 May 2020

What is an operating system and What happens when you run a program.What is responsibility of OS.

vidyanand kumar May 08, 2020

1. What is an operating system? Middleware between user programs and system hardware. Manages hardware: CPU, main memory, IO devices (...

OperatingSystem

OS provides process abstraction and OS data structures.How does OS create a process.

vidyanand kumar May 08, 2020

OS provides process abstraction:) When you run an exe file, the OS creates a process = a running program OS timeshares CPU across mul...

OperatingSystem

What API does the OS provide to the user program.

vidyanand kumar May 08, 2020

What API does the OS provide to the user programs? API = Application Programming Interface = functions available to write user programs...

OperatingSystem

Spooling working and advantage and disadvantage:(Simultaneous pripheral operations on-line).

vidyanand kumar May 08, 2020

What exactly Spooling: (simultaneous peripheral operations online) is it all about? It is a kind of buffering mechanism or a proce...

OperatingSystem

What is a scheduling policy and trying to optimize with shortest time-to-completion first (STCF).

vidyanand kumar May 08, 2020

1. What is a scheduling policy? On the context switch, which process to run next, from a set of ready processes? OS scheduler schedule...

OperatingSystem

Mechanism of process execution,simple function call, OS scheduler,Mechanism of context switch.

vidyanand kumar May 08, 2020

Mechanism of process execution:) 1. Process Execution:- OS allocates memory and creates memory image – Code and data (from home). – S...

OperatingSystem

What is Compatible Time-Sharing System.

vidyanand kumar May 08, 2020

Compatible Time-Sharing System:- The Compatible Time-Sharing System ( CTSS ), was one of the first time-sharing operating systems...

OperatingSystem

To meet the difficult requirements of multiprogramming and time sharing, there have been 5 major achievements by OS's:

vidyanand kumar May 08, 2020

To meet the difficult requirements of multiprogramming and time sharing, there have been 5 major achievements by OS's: Processes man...

OperatingSystem

Mainframe Systems , Batch Processing Operating System,Multiprogramming Operating System ,Real-Time Operating Systems (RTOS):.

vidyanand kumar May 08, 2020

1.Mainframe Systems Reduce setup time by batching similar jobs Automatic job sequencing – automatically transfers control from one j...

OperatingSystem

process control block,

vidyanand kumar May 08, 2020

process control block: Process Control Block is a data structure that contains information about the process related to it. The process ...

OperatingSystem

Operating System Services Program Execution,I/O Operations,File System Manipulation,Communications,System Call:.

vidyanand kumar May 08, 2020

Operating System Services Following are the five services provided by operating systems to the convenience of the users. 1. Program Exe...

Thursday, 7 May 2020

OperatingSystem

Evolution of Operating System

vidyanand kumar May 07, 2020

1.Mainframe Systems Reduce setup time by batching similar jobs Automatic job sequencing – automatically transfers control from one...

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Codeprg

Friday, 8 May 2020

What is an operating system and What happens when you run a program.What is responsibility of OS.

OS provides process abstraction and OS data structures.How does OS create a process.

What API does the OS provide to the user program.

Spooling working and advantage and disadvantage:(Simultaneous pripheral operations on-line).

What is a scheduling policy and trying to optimize with shortest time-to-completion first (STCF).

Mechanism of process execution,simple function call, OS scheduler,Mechanism of context switch.

What is Compatible Time-Sharing System.

To meet the difficult requirements of multiprogramming and time sharing, there have been 5 major achievements by OS's:

Mainframe Systems , Batch Processing Operating System,Multiprogramming Operating System ,Real-Time Operating Systems (RTOS):.

process control block,

Operating System Services Program Execution,I/O Operations,File System Manipulation,Communications,System Call:.

Thursday, 7 May 2020

Evolution of Operating System

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