Q. When we execute a C program, CPU runs in ____ mode.

View solution

Q. In ____ mode, the kernel runs on behalf of the user.

View solution

Q. All UNIX and LINUX systems have one thing in common which is ____

View solution

Q. The chmod command invokes the ____ system call.

View solution

Q. For reading input, which of the following system call is used?

View solution

Q. Which of the following system call is used for opening or creating a file?

View solution

Q. There are ___ modes of opening a file.

View solution

Q. Which of the following mode is used for opening a file in both reading and writing?

View solution

Q. open system call returns the file descriptor as ___

View solution

Q. Which of the following system call is used for closing a file?

View solution

Q. close system call returns ____

View solution

Q. ____ system call is used for writing to a file.

View solution

Q. write system call returns -1 when ___________

View solution

Q. ____ system call is used for positioning the offset pointer.

View solution

Q. Which of the following offset is used with lseek system call to set the offset pointer to the end of the file?

View solution

Q. Which of the following system call is used for truncating a file?

View solution

Q. truncate needs the ___ of the file as an argument but ftruncate works with _______

View solution

Q. Choose the correct statement:

View solution

Q. Which of the following fields in the structure stat, has information about the permission setting of a file?

View solution

Q. Which of the following are not system calls?

View solution