GSEC — GIAC Security Essentials Certification Linux Practice Questions

You work as a Linux technician for Tech Perfect Inc. You have lost the password of the root. You want to provide a new password. Which of the following steps will you take to accomplish the task?

• AA. The password of the root user cannot be change
• BB. Use the PASSWD root comman
• CC. Reboot the compute
• DD. Reboot the computer in run level 0. Use INIT=/bin/sh as a boot optio

Which of the following Linux commands can change both the username and group name a file belongs to?

• AA. chown
• BB. chgrp
• CC. chmod
• DD. newgrp

The Linux command to make the /etc/shadow file, already owned by root, readable only by root is which of the following?

• AA. chmod 444/etc/shadow
• BB. chown root: root/etc/shadow
• CC. chmod 400/etc/shadow
• DD. chown 400 /etc/shadow