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Lpi 117-303 Exam Syllabus Topics:

SectionObjectives
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- 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
                  Network Security- Secure network services
                  • 1. SSH hardening and configuration
                    • 2. VPN setup and management
                      - Firewall and packet filtering
                      • 1. Network segmentation and filtering rules
                        • 2. iptables and nftables configuration
                          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
                                  System Hardening and Monitoring- Security monitoring and auditing
                                  • 1. Intrusion detection systems (IDS)
                                    • 2. Log analysis and auditd
                                      - System security hardening
                                      • 1. Kernel and service hardening
                                        • 2. Secure boot and system integrity

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

                                          SELinux is a Linux feature that:

                                          • A. enforces Mandatory Access Control policies that can restrict user space programs and system servers to the minimum amount of privilege required to operate correctly.
                                          • B. monitors system file access by unprivileged users and warns them when they are trying to gain access to files beyond their permission levels set in the Mandatory Access Control policies.
                                          • C. ensures that system files referenced in the Mandatory Access Control policies are not modified and alerts administrators when changes occur.
                                          • D. provides only Mandatory Access Control policies. Additional access control models such as Rolebased access control require additional tools to implement.
                                          Reveal Solution  Discussion  0

                                          Correct Answer: A  🗳️

                                          What can proxymap be used for in a Postfix installation? (Select TWO correct answers)

                                          • A. Mapping mail user IDs to system accounts.
                                          • B. Consolidating the number of open lookup tables.
                                          • C. Overcoming chroot restrictions.
                                          • D. Creating and querying Postfix alias databases.
                                          • E. Creating and querying Postfix lookup tables.
                                          Reveal Solution  Discussion  0

                                          Correct Answer: B,C  🗳️

                                          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. A simple scan was launched.
                                          • B. A stealth SYN scan was launched.
                                          • C. There are no other services running on this machine.
                                          • D. The scan was executed by the root user.
                                          • E. Output will be sent to a file instead of stdout.
                                          Reveal Solution  Discussion  0

                                          Correct Answer: B,D  🗳️

                                          The openssl command can be used to test connections with various secure services. What command will open a connection with a remote POP3S (POP3 over SSL) server?

                                          • A. openssl connect pop.example.com:pop3s
                                          • B. openssl s_client pop.example.com:pop3s
                                          • C. openssl s_client connect pop.example.com:pop3s
                                          • D. openssl connect host pop.example.com:pop3s
                                          Reveal Solution  Discussion  0

                                          Correct Answer: C  🗳️

                                          DNS servers are vulnerable to which of the following attacks? (Select THREE correct answers)

                                          • A. Fork Bomb Attack
                                          • B. ManintheMiddle
                                          • C. Cache Poisoning
                                          • D. Smurf Attack
                                          • E. PasswordBased Attack
                                          Reveal Solution  Discussion  0

                                          Correct Answer: B,C,D  🗳️

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