LPIC Exam 303: Security, version 3.0: 303-300 Exam


"LPIC Exam 303: Security, version 3.0", also known as 303-300 exam, is a Lpi Certification. With the complete collection of questions and answers, ExamcollectionPass has assembled to take you through 163 Q&As to your 303-300 Exam preparation. In the 303-300 exam resources, you will cover every field and category in LPIC-3 Certification helping to ready you for your successful Lpi Certification.

  • Exam Code: 303-300
  • Exam Name: LPIC Exam 303: Security, version 3.0
  • Total Questions: 163
  • Certification Provider: Lpi
  • Corresponding Certification: LPIC-3
  • Updated on: Aug 05, 2026

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Lpi 303-300 Exam Syllabus Topics:

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

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

1. What is the primary purpose of Online Certificate Status Protocol (OCSP)?

A) To generate new X.509 certificates automatically.
B) To allow a client to check the revocation status of a specific X.509 certificate in real time.
C) To encrypt data in transit between a client and server.
D) To distribute the full Certificate Revocation List to all clients.


2. What is the purpose of an access control list in Linux?

A) To specify fine-grained permissions for users and groups
B) To compress a file to save disk space
C) To mark a file as executable
D) To encrypt a file for secure transmission


3. Which file is used to configure rkhunter?

A) /etc/maldet.conf
B) /etc/rkhunter.conf
C) /etc/audit/auditd.conf
D) /etc/aide/aide.conf


4. Which of the following statements is true regarding eCryptfs?

A) After unmounting an eCryptfs directory, the directory hierarchy and the original file names are still visible, although, it is not possible to view the contents of the files.
B) For every file in an eCryptfs directory there exists a corresponding file that contains the encrypted content.
C) eCryptfs cannot be used to encrypt only directories that are the home directory of a regular Linux user.
D) When a user changes his login password, the contents of his eCryptfs home directory has to be re- encrypted using his new login password.
E) The content of all files in an eCryptfs directory is stored in an archive file similar to a tar file with an additional index to improve performance.


5. What is a Trojan?

A) A type of denial-of-service attack
B) A type of malware that disguises itself as legitimate software
C) A type of phishing scam
D) A type of virus


Solutions:

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

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