Computer Science · all questions

Linux
practice.

Practice every MCQ with options. Use Show answers when you want the correct option and solution.

996

Questions

34/50

Page

Pick an option on a question to see the right answer and solution.

Q661

Which statement resumes the next iteration of a for, while, select, or untill loop?

Select an option to see the answer and solution.

Q662

x86-32 uses which programming model?

Select an option to see the answer and solution.

Q663

What is sed?

Select an option to see the answer and solution.

Q664

Which one of the following operating system does not supports proc filesystem?

Select an option to see the answer and solution.

Q665

The -v option of gcc

Select an option to see the answer and solution.

Q666

Which one of the following command will print the environement of process 1?

Select an option to see the answer and solution.

Q667

Which one of the following is not true about the GDB?

Select an option to see the answer and solution.

Q668

Pid of init process

Select an option to see the answer and solution.

Q669

The file /proc/[PID]/maps contains the

Select an option to see the answer and solution.

Q670

This program will print the value

#include<stdio.h>
#include<fcntl.h>
 
int main()
{
    int rfd, wfd, count;
    char buff[11];
    if (mkfifo("/tmp/test_fifo",0666) != 0)
        perror("mkfifo");
    wfd = open("/tmp/test_fifo",O_WRONLY|O_NONBLOCK);
    count = write(wfd,"Example",11);
    printf("%d\n",count);
    rfd = open("/tmp/test_fifo",O_RDONLY|O_NONBLOCK);
    count = read(rfd,buff,11);
    return 0;
}

Select an option to see the answer and solution.

Q671

In this program the fifo "my_fifo"

#include<stdio.h>
 
int main()
{
    if (mkfifo("my_fifo",0666) != 0)
        perror("mkfifo");
    return 0;
}

Select an option to see the answer and solution.

Q672

A user executes the following command successfully:

$ chmod +x file1.txt

Which of the following is true of the output of this command?

Select an option to see the answer and solution.

Q673

What command would send the output of cmd1 to the input of cmd2?

Select an option to see the answer and solution.

Q674

The command chmod 4777 a.out

Select an option to see the answer and solution.

Q675

Each driver in the device driver model is described by a . . . . . . . . object.

Select an option to see the answer and solution.

Q676

Which GDB command reloads the debugging information?

Select an option to see the answer and solution.

Q677

In linux, the static libraries are mostly installed in

Select an option to see the answer and solution.

Q678

pwd command displays

Select an option to see the answer and solution.

Q679

What is the output of the following code:

os=Unix
echo 1. $os 2."$ os" 3.' $o s^{'} 4.$ os

Select an option to see the answer and solution.

Q680

Sysconf(_SC_PAGE_SIZE) returns?

Select an option to see the answer and solution.

Prev 32 33 34 35 36 Next