Oracle Linux Security Administration Quiz

1. Which permission number represents read and execute only?

5

6

7

3

2. What is the purpose of the audit daemon (auditd) in Oracle Linux?

Monitor and log system security events

Manage user authentication

Configure firewall rules

Encrypt user data

3. How do you list all open ports in Oracle Linux?

Netstat -tuln or ss -tuln

Lsof -i

Firewall-cmd --list-ports

Iptables -L

4. Which authentication method uses public-key cryptography?

Password-based authentication

SSH key-based authentication

LDAP authentication

Kerberos

5. What does the chroot command do in Oracle Linux?

Changes file ownership

Changes the root directory for a process

Modifies file permissions

Compresses files

6. Which file defines system-wide security limits?

/etc/security/limits.conf

/etc/limits

/etc/security.conf

/etc/ulimit

7. What is the default SSH port in Oracle Linux?

22

2222

80

443

8. What does the sticky bit prevent in Oracle Linux?

Unauthorized file deletion from shared directories

Group access to files

User login attempts

Network connections

9. Which command sets the setuid bit on an executable file in Oracle Linux?

Chmod u+s filename

Chmod g+s filename

Chmod o+s filename

Chmod a+s filename

10. How do you create a new user group in Oracle Linux?

Groupadd groupname

Addgroup groupname

Useradd -g groupname

Group create groupname

11. How do you check SELinux status in Oracle Linux?

Getenforce command

Selinux status

Check-selinux

Sestatus -v

12. Which SELinux mode logs violations without enforcing policies?

Enforcing

Permissive

Disabled

Monitor

13. What does the umask value control in Oracle Linux?

Default file and directory permissions

User login timeout

System memory usage

Network packet size

14. Which file contains user account information in Oracle Linux?

/etc/shadow

/etc/passwd

/etc/group

/etc/sudoers

15. What is the purpose of the /etc/shadow file?

Store encrypted passwords

List active users

Define user groups

Configure system limits

16. Which firewall management tool is standard in Oracle Linux 8+?

Iptables

Firewalld

Ufw

Pf

17. Which command disables a user account without deleting it?

Userdel username

Usermod -L username

Passwd -l username

Lockuser username

18. How do you enable password aging in Oracle Linux?

Chage command

Passwd -e

Usermod -p

Age-password

19. How do you add a user to the sudoers list in Oracle Linux?

Edit /etc/sudoers directly with a text editor

Use the visudo command

Add the user to /etc/sudo file

Run sudo adduser command

20. What is the primary purpose of SELinux in Oracle Linux?

Manage user passwords

Enforce mandatory access control policies

Configure network interfaces

Schedule system backups

Oracle Linux Professional Security Administration Quiz