Lpi 117-303 : LPI Level 3 Exam (LPI 303: Security)

117-303 real exams

Exam Code: 117-303

Exam Name: LPI Level 3 Exam (LPI 303: Security)

Updated: Sep 04, 2026

Q & A: 101 Questions and Answers

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Lpi 117-303 Exam Syllabus Topics:

SectionObjectives
System Hardening and Monitoring- Security monitoring and auditing
  • 1. Log analysis and auditd
    • 2. Intrusion detection systems (IDS)
      - System security hardening
      • 1. Kernel and service hardening
        • 2. Secure boot and system integrity
          Access Control and Authentication- Authorization mechanisms
          • 1. File permissions and ACLs
            • 2. Sudo and privilege escalation control
              - Authentication systems
              • 1. LDAP integration
                • 2. PAM configuration and usage
                  Incident Response and Troubleshooting- Security incident handling
                  • 1. Forensics basics on Linux systems
                    • 2. Incident detection and response procedures
                      - Recovery and mitigation
                      • 1. System recovery after compromise
                        • 2. Backup and restore strategies
                          Cryptography and Data Security- PKI and certificates
                          • 1. X.509 certificates and trust chains
                            • 2. Certificate lifecycle management
                              - Encryption technologies
                              • 1. Symmetric and asymmetric encryption
                                • 2. OpenSSL usage and certificate management
                                  Network Security- Firewall and packet filtering
                                  • 1. iptables and nftables configuration
                                    • 2. Network segmentation and filtering rules
                                      - Secure network services
                                      • 1. SSH hardening and configuration
                                        • 2. VPN setup and management

                                          Lpi LPI Level 3 Exam (LPI 303: Security) Sample Questions:

                                          Question 1

                                          The system administrator wishes to use the pam_listfile.so module to restrict which users are allowed to login via SSH. Which line will configure this behaviour?

                                          A. auth required pam_listfile.so item=user sense=deny file=/etc/sshd/sshd.deny onerr=fail
                                          B. auth required pam_listfile.so item=user sense=deny file=/etc/sshd/sshd.deny onerr=succeed
                                          C. auth required pam_listfile.so item=user sense=allow file=/etc/sshd/sshd.allow onerr=succeed
                                          D. auth required pam_listfile.so item=user sense=allow file=/etc/sshd/sshd.allow onerr=fail


                                          Question 2

                                          Which of the following are builtin chains for the iptables nat table? (Select THREE correct answers)

                                          A. PROCESSING
                                          B. PREROUTING
                                          C. INPUT
                                          D. OUTPUT
                                          E. POSTROUTING


                                          Question 3

                                          What is true about the permissions for the file afile given the following output from getfacl? (Select TWO correct answers) % getfacl afile # file: afile # owner: matt # group: support user::rwx user:hugh:rw group::r group:staff:rx mask::rwx other::r

                                          A. The user matt will not be able to edit this file.
                                          B. Anyone in the support group will be able to read and execute the file.
                                          C. The user hugh will be able to read the contents of the file.
                                          D. Anyone in the users group will be able to read the file.
                                          E. Anyone in the staff group will be able to read and execute the file.


                                          Question 4

                                          CORRECT TEXT
                                          What command will remove the dmcrypt mapping named cryptvol? (Provide the command with any options and parameters)


                                          Question 5

                                          CORRECT TEXT
                                          What command will list basic information about all targets available to cryptmount? (Provide the command with any options or parameters)


                                          Solutions:

                                          Question 1
                                          Answer: D
                                          Question 2
                                          Answer: B,D,E
                                          Question 3
                                          Answer: C,E
                                          Question 4
                                          Answer: Only visible for members
                                          Question 5
                                          Answer: Only visible for members

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