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Lpi 303-300 pass test : LPIC Exam 303: Security, version 3.0

303-300 actual test
  • Exam Code: 303-300
  • Exam Name: LPIC Exam 303: Security, version 3.0
  • Updated: Sep 03, 2026
  • Q & A: 163 Questions and Answers
  • PDF Demo
  • PC Test Engine
  • Online Test Engine
  • Total Price: $59.99  

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Lpi 303-300 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Cryptography8%- Data Encryption
  • 1. Use LUKS and dm-crypt
  • 2. Encrypt files and storage devices
  • 3. Secure data transmission
- OpenPGP
  • 1. Sign and encrypt data
  • 2. Manage GnuPG keys
  • 3. Web of trust concepts
- X.509 Certificates and Public Key Infrastructures
  • 1. Create and manage certificates
  • 2. Certificate revocation and validation
  • 3. Manage certificate authorities
Topic 2: Access Control8%- Mandatory Access Control
  • 1. AppArmor configuration
  • 2. Policy enforcement
  • 3. SELinux management
- Authentication and Authorization
  • 1. PAM
  • 2. Multi-factor authentication
  • 3. Centralized authentication
- Discretionary Access Control
  • 1. POSIX ACLs
  • 2. Extended attributes
  • 3. File permissions
Topic 3: Threats and Vulnerability Assessment3%- Threat Analysis
  • 1. Application threats
  • 2. Network threats
  • 3. Credential and confidentiality threats
  • 4. Host-based threats
- Vulnerability Assessment
  • 1. Risk identification
  • 2. OpenVAS
  • 3. Security scanning
Topic 4: Host Security9%- Resource Control
  • 1. ulimits
  • 2. cgroups
  • 3. Process resource management
- Host Hardening
  • 1. Service hardening
  • 2. Secure boot process
  • 3. Kernel runtime protection
- Host Intrusion Detection
  • 1. Rootkit detection tools
  • 2. Linux Audit system
  • 3. Malware detection
  • 4. AIDE integrity checking
Topic 5: Network Security12%- Virtual Private Networks
  • 1. OpenVPN
  • 2. WireGuard
  • 3. IPsec and strongSwan
- Network Intrusion Detection
  • 1. Kismet
  • 2. Wireshark
  • 3. tcpdump
  • 4. Snort
- Packet Filtering
  • 1. nftables awareness
  • 2. IP sets
  • 3. NAT and connection tracking
  • 4. iptables and ip6tables
- Network Hardening
  • 1. TCP wrappers and service restrictions
  • 2. Secure network services

Lpi LPIC Exam 303: Security, version 3.0 Sample Questions:

Question 1

Which of the following access control models is established by using SELinux?

A. Discretionary Access Control (DAC)
B. User Access Control (UAC)
C. Mandatory Access Control (MAC)
D. Security Access Control (SAC)
E. Group Access Control (GAC)


Question 2

Which of the following utilities is used to generate keys for DNSSEC?

A. dnssec-dsfromkey
B. delv
C. dnssec-keygen
D. rndc


Question 3

What is the purpose of OCSP stapling?

A. It replaces the need for a Certificate Revocation List entirely.
B. It encrypts the OCSP request between client and CA.
C. It allows the certificate authority to revoke a certificate faster.
D. It allows the server, rather than the client, to periodically query the OCSP responder and attach the signed response to the TLS handshake.


Question 4

What is a honeypot?

A. A type of phishing scam
B. A type of virus
C. A network security tool designed to lure attackers into a trap
D. A type of denial-of-service attack


Question 5

What is the purpose of the OpenVPN "tls-auth" or "tls-crypt" directive?

A. To compress the VPN traffic.
B. To generate the server's X.509 certificate automatically.
C. To add an additional layer of HMAC authentication (or full encryption, with tls-crypt) to the TLS control channel, protecting against certain DoS and port-scanning attacks.
D. To disable TLS entirely and use a static key instead.


Solutions:

Question 1
Answer: C
Question 2
Answer: C
Question 3
Answer: D
Question 4
Answer: C
Question 5
Answer: C

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