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Lpi 303-300

303-300

Exam Code: 303-300

Exam Name: LPIC Exam 303: Security, version 3.0

Updated: Oct 13, 2026

Q&A Number: 163 Q&As

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303-300 Online Test Engine

Lpi 303-300 Exam Syllabus Topics:

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

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

Question #1
What is Cryptography?

A. The art of sending anonymous messages
B. The art of decoding messages
C. The art of sending secret messages
D. The art of sending public messages


Question #2
What is phishing?

A. A type of malware that disguises itself as legitimate software
B. A type of social engineering attack
C. A type of virus
D. A type of denial-of-service attack


Question #3
In an IPsec implementation using strongSwan, what is the purpose of the Internet Key Exchange (IKE) protocol?

A. To encrypt the actual data payload of IPsec traffic.
B. To route IPsec packets across the internet.
C. To compress IPsec traffic before encryption.
D. To negotiate and establish the Security Associations (SAs) and cryptographic keys used by IPsec.


Question #4
Which mount option prevents the execution of binaries located on the mounted filesystem?

A. noexec
B. nosuid
C. nodev
D. ro


Question #5
Which IPsec mode encapsulates and protects the entire original IP packet, including its header, typically used for site-to-site VPN gateways?

A. Aggressive mode
B. Transport mode
C. Tunnel mode
D. Main mode


Solutions:

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

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