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Lpi 117-303 Exam Syllabus Topics:

SectionWeightObjectives
Threats and Vulnerability Assessment15%- Security scanning
  • 1. Network scanning tools and techniques
    • 2. Vulnerability assessment concepts
      - 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
                  Organizational Security15%- Security Policies
                  • 1. Security governance concepts
                    • 2. Audit and compliance basics
                      - Incident Response
                      • 1. Incident handling lifecycle
                        • 2. Forensics basics
                          Network Security25%- Secure communication
                          • 1. SSH configuration and hardening
                            • 2. TLS/SSL concepts and configuration
                              - VPN and secure tunneling
                              • 1. IPsec fundamentals
                                • 2. WireGuard/OpenVPN concepts
                                  Cryptography25%- Public Key Infrastructure (PKI)
                                  • 1. Certificates and certificate authorities
                                    • 2. Certificate management tools
                                      - Data Encryption
                                      • 1. Disk and filesystem encryption
                                        • 2. Symmetric and asymmetric encryption concepts

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

                                          Question 1

                                          An SELinux security context is required to ensure that all files in /opt have the default context of
                                          system_u:object_r:usr_t. How should the corresponding configuration entry be formatted?

                                          A. system_u:object_r:usr_t /opt/*
                                          B. /opt/.* system_u:object_r:usr_t
                                          C. system_u:object_r:usr_t /opt/.*
                                          D. /opt/* system_u:object_r:usr_t
                                          E. system_u:object_r:usr_t: /opt/.*


                                          Question 2

                                          Which of the following methods can be used to deactivate a rule in Snort? (Select TWO correct answers)

                                          A. Place a # in front of the rule and restart snort.
                                          B. Write a pass rule in local.rules and restart snort with the o option.
                                          C. Add the rule to /etc/snort/rules.deactivated and it will take effect immediately.
                                          D. Delete the rule and snort will automatically reread its rules files within five minutes.


                                          Question 3

                                          Which of the following are valid Nagios objects? (Select THREE correct answers)

                                          A. Contacts
                                          B. Commands
                                          C. Notification Groups
                                          D. Programs
                                          E. Host Groups


                                          Question 4

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


                                          Question 5

                                          Which of the following is not an iptables rule set?

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


                                          Solutions:

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

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