Lpi LPIC Exam 303: Security, version 3.0 - testinsides 303-300 dumps

303-300 real exams

Exam Code: 303-300

Exam Name: LPIC Exam 303: Security, version 3.0

Updated: Aug 20, 2026

Q & A: 163 Questions and Answers

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Lpi 303-300 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Network Security17%- Network Hardening
- Packet Filtering
- Virtual Private Networks
- Network Intrusion Detection
Topic 2: Threats and Vulnerability Assessment5%- Common Security Vulnerabilities and Threats
- Penetration Testing
Topic 3: Access Control8%- Discretionary Access Control
- Mandatory Access Control
Topic 4: Host Security13%- Host Intrusion Detection
- Resource Control
- Host Hardening
Topic 5: Cryptography17%- X.509 Certificates and Public Key Infrastructures
- X.509 Certificates for Encryption, Signing and Authentication
- DNS and Cryptography
- Encrypted File Systems

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

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

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


2. Which of the following expressions are valid AIDE rules? (Choose TWO correct answers.)

A) #/bin/
B) /etc p+i+u+g
C) append: /var/log/*
D) /usr=all
E) !/var/run/.*


3. Which file defines the default set of resource limits, such as maximum open files or processes, applied to users via PAM?

A) /etc/security/limits.conf
B) /etc/sysctl.conf
C) /etc/login.defs
D) /etc/pam.d/common-session


4. What is an X.509 Certificate?

A) A digital document that verifies the identity of a device
B) A digital document that verifies the identity of a website
C) A digital document that verifies the identity of a person
D) A digital document that verifies the identity of a company


5. Which permission bit allows a user to delete a file?

A) Execute
B) SetUID
C) Write
D) Read


Solutions:

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

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