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

  • Exam Code: 117-303
  • Exam Name: LPI Level 3 Exam (LPI 303: Security)
  • Updated: Oct 25, 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:

                                          Question #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.
                                          Reveal Solution  Discussion  0

                                          Correct Answer: C  🗳️

                                          Question #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
                                          Reveal Solution  Discussion  0

                                          Correct Answer: E  🗳️

                                          Question #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 (;).
                                          Reveal Solution  Discussion  0

                                          Correct Answer: B  🗳️

                                          Question #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)

                                          Reveal Solution  Discussion  0

                                          Correct Answer:

                                          namedcheckconf /usr/sbin/namedcheckconf

                                          Question #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)

                                          Reveal Solution  Discussion  0

                                          Correct Answer:

                                          luksFormat

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