EX200 Online Practice Questions and Answers

Correct Answer: Check the anser in explanation.

# 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)

Correct Answer: Check the anser in explanation.

# cat /etc/testfile | while read line; do echo $line | grep abcde | tee -a /tmp/testfile done OR grep `abcde' /etc/testfile > /tmp/testfile

Correct Answer: Check the anser in explanation.

cd /var/www/html wget http://instructor.example.com/pub/serverX.html mv serverX.html index.html /etc/init.d/httpd restart chkconfig httpd on

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fdisk -cu /dev/vda partx -a /dev/vda pvcreate /dev/vdax vgcreate datastore /dev/vdax -s 16M lvcreate-l 50 -n database datastore mkfs.ext3 /dev/datastore/database mkdir /mnt/database mount /dev/datastore/database /mnt/database/ df -Th vi /etc/fstab /dev/datastore /database /mnt/database/ ext3 defaults 0 0 mount -a

Correct Answer: Check the anser in explanation.

mkdir –p /home/guests cat /etc/auto.master: /home/guests /etc/auto.ldap cat /etc/auto.ldap: ldapuser1 -rw instructor.example.com:/home/guests/ldapuser1

automatically mount all the user's home directory #* -rw instructor.example.com:/home/guests/and

Correct Answer: Check the anser in explanation.

# groupadd -g 600 admin

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ftp server.domain11.example.com Anonymous login ftp> cd /pub/updates ftp> ls ftp> mget kernel* ftp> bye

rpm -ivh kernel*

vim /etc/grub.conf Check the updatted kernel is the first kernel and the orginal kernel remains available. set default=0 wq!

Correct Answer: Check the anser in explanation.

Use netconfig command

Enter the IP Address as given station number by your examiner: example: 172.24.0.1

Enter Subnet Mask

Enter Default Gateway and primary name server

press on ok

ifdown eth0

ifup eth0

verify using ifconfig

In the lab server is playing the role of router, IP forwarding is enabled. Just set the Correct IP and gateway, you can ping to 172.25.254.254.

Correct Answer: Check the anser in explanation.

*

[root@node1 ~]# crontab -l -u natasha

no crontab for natasha

[root@node1 ~]# crontab -e -u natasha

23 14 * * * /bin/echo hello

*/2 * * * * /bin/echo 2min

crontab: installing new crontab

[root@node1 ~]# crontab -l -u natasha

23 14 * * * /bin/echo hello

*/2 * * * * /bin/echo 2min

[root@node1 ~]# systemctl status crond.service

*

### For Checking ###

[root@node1 ~]# tail -f /var/log/cron

Mar 23 13:23:48 node1 crontab[10636]: (root) REPLACE (natasha) Mar 23 13:23:48 node1 crontab[10636]: (root) END EDIT (natasha) Mar 23 13:23:50 node1 crontab[10638]: (root) LIST (natasha) Mar 23 13:24:01 node1 crond[1349]: (root)

FAILED (loading cron table) Mar 23 13:24:02 node1 CROND[10673]: (natasha) CMD (/bin/echo 2min)

Correct Answer: Check the anser in explanation.

* [root@workstation ~]# ssh shangrila@node1 [shangrila@node1 ~]$ podman login registry.domain15.example.com:5000 Username: admin Password: Login Succeeded! [shangrila@node1 ~]$ podman pull registry.domain15.example.com:5000/rhel8/rsyslog [shangrila@node1 ~]$ podman run -d --name logserver registry.domain15.example.com:5000/rhel8/rsyslog 021b26669f39cc42b8e94eab886ba8293d6247bf68e4b0d76db2874aef284d6d [shangrila@node1 ~]$ mkdir -p ~/.config/systemd/user [shangrila@node1 ~]$ cd ~/.config/systemd/user

* [shangrila@node1 user]$ podman generate systemd --name logserver --files --new /home/shangrila/.config/systemd/user/container-logserver.service [shangrila@node1 ~]$ systemctl --user daemon-reload [shangrila@node1 user]$ systemctl --user enable --now container-logserver.service [shangrila@node1 ~]$ podman ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 7d9f7a8a4d63 registry.domain15.example.com:5000/rhel8/rsyslog:latest /bin/rsyslog.sh 2 seconds ago logserver [shangrila@node1 ~]$ sudo reboot [shangrila@node1 ~]$ cd .config/systemd/user [shangrila@node1 user]$ systemctl --user status