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

  • Exam Code: 117-303
  • Exam Name: LPI Level 3 Exam (LPI 303: Security)
  • Updated: Jul 18, 2026     Q & A: 101 Questions and Answers

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Lpi 117-303 Exam Syllabus Topics:

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

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

                                          1. What is one of the primary claimed benefits of Smack over SELinux?

                                          A) Smack implements Rule Set Based Access Control. SELinux doesn't support this model.
                                          B) SELinux has export restrictions placed on it by the NSA.
                                          C) Configuration of Smack is much more simple.
                                          D) Smack allows users to share files without administrator intervention.


                                          2. Which of the following is NOT included in a Snort rule header?

                                          A) protocol
                                          B) action
                                          C) source port
                                          D) source IP address
                                          E) packet byte offset


                                          3. What is the syntax error in the following simple Puppet configuration file?
                                          class test_class { file { "/tmp/test.txt": mode => 600, owner => root, group => root } } # Define the node node testclient { isa test_class }

                                          A) Comments begin with // character and not a #.
                                          B) isa should be include.
                                          C) class, node and file sections require a semicolon (;) at the end of their definitions.
                                          D) The colon (:) after /tmp/test.txt should be a semicolon (;).


                                          4. CORRECT TEXT
                                          Which tool, distributed with BIND 9, will check the syntax of a named configuration file? (Supply only the program name, without any options or parameters)


                                          5. CORRECT TEXT
                                          Which LUKS action, when supplied to the cryptsetup command, will initialize a LUKS partition and set the initial key? (Provide only the action name)


                                          Solutions:

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

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