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, iPassleader 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.

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  • Updated on: Sep 01, 2026
  • No. of Questions: 163 Questions & Answers

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  • Updated on: Sep 01, 2026
  • No. of Questions: 163 Questions & Answers

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Lpi 303-300 Exam Syllabus Topics:

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

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

Question 1

Which of the following command lines sets the administrator password for ntop to testing 123?

A. ntop --set-new-password=testing123
B. ntop --set-admin-password=testing123
C. ntop --reset-password=testing123
D. ntop --set-password=testing123


Question 2

What is the purpose of a Certificate Authority (CA)?

A. To store X.509 certificates
B. To decrypt X.509 certificates
C. To issue and sign X.509 certificates
D. To encrypt X.509 certificates


Question 3

What is social engineering?

A. A type of malware that disguises itself as legitimate software
B. A type of denial-of-service attack
C. A type of virus
D. A type of attack that exploits human psychology to gain access to sensitive information


Question 4

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

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


Question 5

Which of the following commands adds users using SSSD's local service?

A. sss_add
B. sss_local_adduser
C. sss_useradd
D. sss_adduser
E. sss-addlocaluser


Solutions:

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

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