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Lpi LPIC Level3 117-303

117-303

Exam Code: 117-303

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

Updated: Aug 05, 2026

Q&A Number: 101 Q&As

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Lpi 117-303 Exam Syllabus Topics:

SectionObjectives
Topic 1: Cryptography and Data Security- Encryption technologies
  • 1. OpenSSL usage and certificate management
    • 2. Symmetric and asymmetric encryption
      - PKI and certificates
      • 1. Certificate lifecycle management
        • 2. X.509 certificates and trust chains
          Topic 2: Access Control and Authentication- Authorization mechanisms
          • 1. Sudo and privilege escalation control
            • 2. File permissions and ACLs
              - Authentication systems
              • 1. PAM configuration and usage
                • 2. LDAP integration
                  Topic 3: System Hardening and Monitoring- Security monitoring and auditing
                  • 1. Intrusion detection systems (IDS)
                    • 2. Log analysis and auditd
                      - System security hardening
                      • 1. Secure boot and system integrity
                        • 2. Kernel and service hardening
                          Topic 4: Network Security- Secure network services
                          • 1. VPN setup and management
                            • 2. SSH hardening and configuration
                              - Firewall and packet filtering
                              • 1. iptables and nftables configuration
                                • 2. Network segmentation and filtering rules
                                  Topic 5: Incident Response and Troubleshooting- Security incident handling
                                  • 1. Forensics basics on Linux systems
                                    • 2. Incident detection and response procedures
                                      - Recovery and mitigation
                                      • 1. Backup and restore strategies
                                        • 2. System recovery after compromise

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

                                          1. The system administrator wishes to use John the Ripper to confirm that the passwords in a file called passwords are not weak. john has finished but the terminal window running the program has closed. What command can be used to list any cracked passwords for this file?

                                          A) john show
                                          B) john show passwords
                                          C) john list passwords
                                          D) john list


                                          2. In which of the following scenarios MUST an administrator use ethernet bridging instead of routing when configuring an OpenVPN site? (Select TWO correct answers)

                                          A) The IPX protocol is required.
                                          B) Some OpenVPN clients will be installed on laptops and must be able to connect from different locations.
                                          C) The IPv4 protocol is required.
                                          D) NetBIOS traffic must be able to traverse the VPN without implementing a WINS server.
                                          E) It will be necessary to use an MTU setting other than the default.


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

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


                                          4. On a new Linux system, the root user is being asked to provide the root user password before being able to use the su command. What line in the /etc/pam.d/su file will allow root to use su without supplying passwords?

                                          A) auth sufficient pam_norootpw.so
                                          B) auth required pam_norootpw.so
                                          C) auth sufficient pam_rootok.so
                                          D) auth required pam_rootok.so


                                          5. A user is attempting to connect to a remote server via SSH and receives the following message:
                                          The authenticity of host 'mail.example.com (208.77.188.166)' can't be established.
                                          RSA key fingerprint is 92:32:55:e9:c4:20:ae:1b:2c:d7:91:40:90:89:1c:ad.
                                          Are you sure you want to continue connecting (yes/no)?
                                          What does this indicate?

                                          A) The server's SSH host key cannot be found in the list of known hosts.
                                          B) The user's SSH client was unable to connect to the remote host's authentication agent for verification.
                                          C) The user's SSH client is incompatible with the server's RSA key.
                                          D) The RSA key fingerprint was found in the SpamCop database, indicating that the remote host is a known spammer.


                                          Solutions:

                                          Question # 1
                                          Answer: B
                                          Question # 2
                                          Answer: A,D
                                          Question # 3
                                          Answer: B,D,E
                                          Question # 4
                                          Answer: C
                                          Question # 5
                                          Answer: A

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