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

Exam Code: 303-300

Exam Name: LPIC Exam 303: Security, version 3.0

Updated: Jul 23, 2026

Q & A: 163 Questions and Answers

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Lpi 303-300 Exam Syllabus Topics:

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

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

1. Which directive is used in an OpenVPN server configuration in order to send network configuration information to the client? (Specify ONLY the option name without any values or parameters.) Solution: push Determine whether the given solution is correct?

A) Correct
B) Incorrect


2. What is the purpose of the "ausearch" command in relation to the Linux audit framework?

A) To generate summary reports of audit statistics.
B) To restart the auditd service.
C) To search and filter existing audit log entries based on criteria such as key, user, or time range.
D) To add new audit rules to the running kernel.


3. In which path is the data, which can be altered by the sysctl command, accessible?

A) /dev/sys/
B) /proc/sys/
C) /sys/
D) /sysctl/


4. Which of the following keywords are built-in chairs for the iptables nat table? (Choose THREE correct answers.)

A) OUTPUT
B) POSTROUTING
C) MASQUERADE
D) PREROUTING
E) PROCESSING


5. Which nftables command displays the currently active ruleset, including all tables, chains, and rules?

A) nft list ruleset
B) nft dump chains
C) nft show tables
D) nft get rules


Solutions:

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

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