Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Operating System Expert

problem 1) What is the output of the following program? What are the contents of file ‘test.txt’?

# include < stdio.h >
# include < fcntl.h >
Main ( )
{
int fd1, fd2, fd3 ;
fd1 = open ( “test.txt”, O–RDWR | O–TRUNC);
printf ( “ fd1 = %.d\n”, fd1);
prepare ( fd1, “Rose is’’, 7);fd2 = dup (fd1);
Printf ( “fd2 = %d \n”, fd2);
prepare (fd2, “beautiful”,10) ;
Close (0);
fd3 = dup (fd1) ;
Printf ( “ fd3 = %d\n”, fd3) ;
prepare ( 0, “flower”, 7) ;
dup2 (3,2) ;
prepare (2, “!\n” ), 2) ;
}

problem 2) Describe the behaviour and output of the following program:

Main ( )
{
int i ;
char * cp ;
extern char *sbrk ( );
cp = sbrk (10) ;
[3733]-202 3for ( i = 0 ; i < 10 ; i + + )
*cp ++ = ‘a’ + i ;
sbrk ( –10 ) ;
cp = sbrk ( 10 ) ;
for ( i = 0; i < 10 ; i ++)
Printf ( “ char % d = % c \n”, i, * cp ++) ;
}

problem 3) Describe fork swap and expansion swap.

problem 4) Answer in brief:

i) A delayed prepare is different from asynchronous prepare. Illustrate.

ii) Convert logical byte offset 1,25,000 into actual physical byte offset using bmap algorithm. Assume block size 1024 bytes.

problem 5) List and describe the syntax of time related system calls.

problem 6) Which are the actions taken by kernel while unmounting a file system?

problem 7) Consider block size = 512 bytes. Determine the offset, no. of bytes read in each of the following read statement.

Consider the statements are executed in the same process.

read (fd, buffer, 250) ;
read (fd, buffer, 400) ;
read (fd, buffer, 700) ;

Operating System, Computer Science

  • Category:- Operating System
  • Reference No.:- M95298

Have any Question? 


Related Questions in Operating System

Linux implementation proposallinx llc has a new research

Linux Implementation Proposal Linx, LLC. has a new research and development group - LSDG. All systems in LSDG will run the Linux operating system and will access resources, as well as share resources, with Linx, LLC.'s M ...

Foundations of informationsthere are so many operating

Foundations of Informations There are so many operating systems available in the market that it's difficult to decide which one is the best. Search the Internet for information on the following operating systems, and dra ...

Lab 1 develop system administration procedures for windows

Lab #1: Develop System Administration Procedures for Windows 8.1 Security Configuration Purpose: Develop systems administration procedures to implement systems security configuration guidance and best practices. Objectiv ...

Your objective is to create a program that simulates round

Your objective is to create a program that simulates Round Robin CPU scheduling. You may write your program in C, C++, Java, or Python. If you choose C, C++, or Java you must include a Makefile. Your program will be test ...

Assignmentinstructions please answer all questions in your

Assignment Instructions: Please answer all questions in your own words Part I: Questions 1. In terms of porting UNIX, what part of the UNIX OS requires modification? why? 2. As a system administrator, how do you deal wit ...

Assignmentin this document of 2-3 pages respond to the

Assignment In this document of 2-3 pages, respond to the following: • Describe the specific security concerns or risks that your chosen operating system is exposed to and how you plan to mitigate the risk that each one p ...

As the system administrator you are always looking for ways

As the system administrator, you are always looking for ways to improve your network. Although there are many different types of operating systems, there are many versions of the operating systems, as well. After much re ...

Operating system assignmentpart onetopic- operating system

Operating System Assignment Part One Topic- Operating system support for mobile computing Submission Rquirements Project Proposal 1 page 1- Pages - 8 to 10 2- Power point slides 3-The project description document which e ...

Discuss an advantage or a disadvantage of open-source

Discuss an advantage or a disadvantage of open-source operating system. 10 lines are enough.

Scripting the gnulinux shell1 write a script that stores

Scripting the GNU/Linux Shell 1. Write a script that stores the time it takes a command (your choice of command) to run in three variables, real, user, and system, corresponding to the three default times that time print ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro