1. . Which command is used to create a new user account in a Unix/Linux system?
(A) adduser
(B) createuser
(C) useradd
(D) newuser
2. . Which command is used to change the ownership of a file or directory in Unix/Linux?
(A) chown
(B) chmod
(C) chgrp
(D) own
3. . Which command is used to display the current system date and time in Unix/Linux?
(A) Datetime
(B) Time
(C) date
(D) Now
4. . Which command is used to list the currently running processes in Unix/Linux?
(A) ls
(B) process
(C) top
(D) ps
5. . Which command is used to shut down a Unix/Linux system?
(A) shutdown
(B) poweroff
(C) halt
(D) all of the above
6. . Which file contains the system-wide environmental variables in Unix/Linux?
(A) /etc/environment
(B) /etc/hosts
(C) /etc/profile
(D) /etc/variables
7. . Which file contains the list of valid usernames on a Unix/Linux system?
(A) /etc/passwd
(B) /etc/users
(C) /etc/groups
(D) /etc/shadow
8. . Which command is used to display the current logged-in users in Unix/Linux?
(A) users
(B) listusers
(C) who
(D) loggedin
9. . Which command is used to format a disk in Unix/Linux?
(A) mkfs
(B) format
(C) diskformat
(D) mkfs
10. . Which command is used to display the disk space usage of a directory in Unix/Linux?
(A) du
(B) ls
(C) df
(D) diskusage