Question 5:What is the role of the Command Line Interpreter? Question 6:Let us consider a multi-program 0.S using time sharing CPU scheduling with quantum time q ms. Aninstruction Start-timer(a), Stop-timer(() are respectively responsible to start and respectively stop the timerhardware. Assume there are three I/O devices a printer, a disk, and a keyboard. To perform I/O operationfrom the user program there are three APIS ReadDisk, WriteDisk, WritePrinter, ReadKeyBoard for readingand writing. The instruction SIOD and SIOP respectively to starts the I/O operation on the Disk andprinting on the printer. The operation Enqueue (device) is responsible for queuing a user request in aspecific device waiting queue. Set-CPU-Mode(value) which sets the CPU mode flag to value=0 forsupervisor and 1 for user mode. Answer the following questions.A. Explain what happen when a user program asks for an IO operationB. Which of the above instructions (in bold) are privileged instructions?C. Give the steps to be performed by SVc-Print (consider the printer queue).D. Assume a process is running and its quantum of time has expired, explain what would happen to thisprocess in terms of its status, and consequently, what the O.S should do in terms of activities.

The only first question will be answered. The command-line interpreter is a software program that…

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Question 5 : What is the role of the Command Line Interpreter?

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

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