Question 1

Pick the run level to run Linux in multi user mode with networking?
A)0
B)3
C)5
D)6

Accepted Answer

Run level 3 is used to run Linux in multi user mode with networking.

Question 2

Section 2 of manpage describes
A)commands
B)system calls
C)function calls
D)drivers

Accepted Answer

Section 2 of the man pages in Unix and Unix-like operating systems is dedicated to system calls, which are functions provided by the kernel.

Question 3

Which of the following exec call is a system call?
A)execl
B)execlp
C)execve
D)execvp

Accepted Answer

The execve function is a system call in Unix-like operating systems that executes a program, replacing the current process image with a new one. The other options are library functions that eventually call execve.

Question 4

______________ timer is decremented only when the process is executing
A)itimer_real
B)itimer_virtual
C)itimer_prof
D)none of the above

Accepted Answer

The itimer_virtual timer is decremented only when the process is executing, measuring the amount of CPU time used by the process.

Question 5

Daemon process is a?
A)group leader
B)session leader
C)orphan process
D)all the above

Accepted Answer

A daemon process is a process that runs in the background, without a controlling terminal. It is typically started at boot time and runs continuously until the system is shut down. Daemon processes are often used to perform tasks that are not essential to the operation of the system, but which are useful to have running, such as logging, monitoring, and backup.

Question 6

The terminal used by a Daemon process is:
A)any terminal
B)no terminal
C)root terminal
D)system console

Accepted Answer

Daemon processes are background processes that do not have a controlling terminal, meaning they do not interact directly with a user's terminal session.

Question 7

shared memory can be used for?
A)read only operations
B)append
C)read or read write operations
D)write only

Accepted Answer

Shared memory can be used for both read and read-write operations, allowing multiple processes to access and modify the same memory space.

Question 8

Sysconf(_SC_PAGE_SIZE) returns?
A)size of the page
B)max size of the page
C)min size of the page
D)paging allowed or not

Accepted Answer

Sysconf(_SC_PAGE_SIZE) returns the size of a page in bytes.

Quiz 4: Operating System and Process Management

Pick the run level to run Linux in multi user mode with networking?

Section 2 of manpage describes

Which of the following exec call is a system call?

______________ timer is decremented only when the process is executing

Daemon process is a?

The terminal used by a Daemon process is:

shared memory can be used for?

Sysconf(_SC_PAGE_SIZE) returns?