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

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 ...

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 ...

Assignment1 arrigo postulated three key propositions of

Assignment (1) Arrigo postulated three key propositions of postmodernism. Explain them in full, using at least 250 words. (2) Daly and Chesney-Lind considered five insights to be distinctive features of feminist theory? ...

Discuss an advantage or a disadvantage of open-source

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

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 ...

This research paper will focus on issues and concerns with

This research paper will focus on issues and concerns with Patch Management. With the advent of many types of software and systems, patch management is major nightmare. Patching the system may cause the system to crash, ...

Firewall rulesin this project you will create two simple

Firewall Rules In this project you will create two simple firewall rules in Windows Advanced Firewall. This may be the first time you have made a modification to the firewall on your computer. The first rule will block a ...

Outcomes1 evaluate process management techniques2 analyse

Outcomes: 1. Evaluate process management techniques. 2. Analyse different memory management strategies. 3. Become aware of the issues of operating systems in regards storage management. 4. Analyse the issues of protectio ...

Questionwhen designing a kernel with rudimentary

Question: When designing a kernel with rudimentary functionality, what are the required services? Justify your answer and provide an example. provide atleast 15 lines. do the best. need reference which is good.

Question moving function outside of the kernel or even

Question: Moving function outside of the kernel or even layering the kernel may provide some benefits. How does virtualization factor into a layered vs. non-layered design discussion? Provide specfic support for your ans ...

  • 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

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

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen