Which of the following commands can remove a user from a group?
A. grouprm
B. groupmod
C. passwd
D. usergroups
E. usermod
Where are user specific crontabs stored?
A. In the database file /etc/crontab.db which is shared by all users.
B. As individual per-user files within /var/spool/cron.
C. As individual per-user files in /etc/cron.user.d.
D. In the .crontab file in the user's home directory.
E. In the file /var/cron/user-crontab which is shared by all users.
Which of the following crontab entries will execute myscript at 30 minutes past every hour on Sundays?
A. 0 * * * 30 myscript
B. 30 * * * 6 myscript
C. 30 0 * * 0 myscript
D. 30 0-23 * * 0 myscript
E. 0 0-23 * * 30 myscript
Please specify the top directory containing the configuration files for the CUPS printing system. (Specify the full path to the directory.)
A. /etc/cups -or- /etc/cups/
With IPv6, how many bits have been used for the interface identifier of an unicast address? (Specify the number using digits only.)
A. 64
Which of the following IPv4 networks are reserved by IANA for private address assignment and private routing? (Choose THREE correct answers.)
A. 127.0.0.0/8
B. 10.0.0.0/8
C. 169.255.0.0/16
D. 172.16.0.0/12
E. 192.168.0.0/16
In order to discover the link layer address of the device that owns a specific IPv4 or IPv6 address, which mechanism is used?
A. Both IPv4 and IPv6 use ARP.
B. Both IPv4 and IPv6 use Neighbor Discovery.
C. IPv4 uses ARP while IPv6 uses Neighbor Discovery.
D. IPv4 uses Neighbor Discovery while IPv6 uses ARP.
E. Both IPv4 and IPv6 can use either ARP or Neighbor Discovery depending on the network.
Which command is used to manually assign an IP address to a network interface? (Specify only the command without any path or parameters.)
A. ifconfig
What is the name of the file that defines the sources (like DNS or local configuration files) and the order in which they are consulted when resolving hostnames? (Specify the full name of the file, including path.)
A. /etc/nsswitch.conf
On a Linux system with shadow passwords enabled, which file in the file system contains the password hashes of all local users? (Specify the full name of the file, including path.)
A. /etc/shadow
