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Lpi 117-303

117-303

Exam Code: 117-303

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

Updated: Oct 06, 2026

Q&A Number: 101 Q&As

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Lpi 117-303 Exam Syllabus Topics:

SectionWeightObjectives
Threats and Vulnerability Assessment15%- Security scanning
  • 1. Vulnerability assessment concepts
    • 2. Network scanning tools and techniques
      - Intrusion Detection
      • 1. Host-based IDS (HIDS)
        • 2. Network-based IDS (NIDS)
          Host Security20%- Access Control
          • 1. Linux file permissions and ACLs
            • 2. Mandatory Access Control (AppArmor/SELinux concepts)
              - System hardening
              • 1. Kernel security parameters
                • 2. Secure boot and firmware security
                  Network Security25%- VPN and secure tunneling
                  • 1. IPsec fundamentals
                    • 2. WireGuard/OpenVPN concepts
                      - Secure communication
                      • 1. SSH configuration and hardening
                        • 2. TLS/SSL concepts and configuration
                          Organizational Security15%- Incident Response
                          • 1. Incident handling lifecycle
                            • 2. Forensics basics
                              - Security Policies
                              • 1. Audit and compliance basics
                                • 2. Security governance concepts
                                  Cryptography25%- Data Encryption
                                  • 1. Symmetric and asymmetric encryption concepts
                                    • 2. Disk and filesystem encryption
                                      - Public Key Infrastructure (PKI)
                                      • 1. Certificates and certificate authorities
                                        • 2. Certificate management tools

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

                                          Question #1
                                          The command 'nmap sS O 10.142.232.10' produces the following output:
                                          PORT STATE SERVICE
                                          631/tcp open ipp
                                          3306/tcp open mysql
                                          Which of these statements are true? (Select TWO correct answers)

                                          A. The scan was executed by the root user.
                                          B. Output will be sent to a file instead of stdout.
                                          C. There are no other services running on this machine.
                                          D. A simple scan was launched.
                                          E. A stealth SYN scan was launched.


                                          Question #2
                                          Which openssl command is used to inspect the information stored in a certificate?

                                          A. info
                                          B. req
                                          C. show
                                          D. x509


                                          Question #3
                                          What does the following iptables rule accomplish:
                                          iptables A INPUT s 208.77.188.166 d 10.142.232.1 p tcp dport 22 j ACCEPT

                                          A. Drops traffic on port 22 only from the hosts 208.77.188.166 and 10.142.232.1.
                                          B. Forwards all requests from the host 208.77.188.166 on port 22 the internal host 10.142.232.1
                                          C. Forwards all requests from the host 10.142.232.1 on port 22 the internal host 208.77.188.166
                                          D. Accepts traffic on port 22 only from the hosts 208.77.188.166 and 10.142.232.1.


                                          Question #4
                                          What is the purpose of the Safe Checks option in a Nessus configuration?

                                          A. Enables secure scanning over an encrypted tunnel.
                                          B. To prevent the use of plugins which may have a negative effect on the network being scanned.
                                          C. To prevent the use of plugins which may leave the Nessus server vulnerable during the scanning process.
                                          D. When validating a Nessus configuration file, the nessusd process will not be interrupted.


                                          Question #5
                                          Which of the following is not an iptables rule set?

                                          A. filter
                                          B. mangle
                                          C. chain
                                          D. nat


                                          Solutions:

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

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