SIMULATION -
Configure your Host Name, IP Address, Gateway and DNS.
Host name: station.domain40.example.com
/etc/sysconfig/network
hostname=abc.com
hostname abc.com

IP Address:172.24.40.40/24 -

Gateway172.24.40.1 -

DNS:172.24.40.1 -

Correct Answer: See explanation below.
# cd /etc/syscofig/network-scripts/
# ls
# vim ifcfg-eth0 (Configure IP Address, Gateway and DNS) IPADDR=172.24.40.40

GATEWAY=172.24.40.1 -

DNS1=172.24.40.1 -
# vim /etc/sysconfig/network
(Configure Host Name)
HOSTNAME= station.domain40.example.com

OR -
Graphical Interfaces:
System->Preference->Network Connections (Configure IP Address, Gateway and DNS) Vim /etc/sysconfig/network
(Configure Host Name)

SIMULATION -
Add 3 users: harry, natasha, tom.
The requirements: The Additional group of the two users: harry, Natasha is the admin group. The user: tom's login shell should be non-interactive.

Correct Answer: See explanation below.
# useradd -G admin harry
# useradd -G admin natasha
# useradd -s /sbin/nologin tom
# id harry;id Natasha (Show additional group)
# cat /etc/passwd
(Show the login shell)

OR -
# system-config-users

SIMULATION -
Create a catalog under /home named admins. Its respective group is requested to be the admin group. The group users could read and write, while other users are not allowed to access it. The files created by users from the same group should also be the admin group.

Correct Answer: See explanation below.
# cd /home/
# mkdir admins /
# chown .admin admins/
# chmod 770 admins/
# chmod g+s admins/

SIMULATION -
Configure a task: plan to run echo hello command at 14:23 every day.

Correct Answer: See explanation below.
# which echo
# crontab -e
23 14 * * * /bin/echo hello
# crontab -l (Verify)