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

303-300 pass collection

Exam Code: 303-300

Exam Name: LPIC Exam 303: Security, version 3.0

Updated: Aug 08, 2026

Q & A: 163 Questions and Answers

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Lpi 303-300 Exam Syllabus Topics:

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

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

1. Which command is used to create an encrypted LUKS-formatted block device?

A) mkfs.luks /dev/sdX
B) cryptsetup luksFormat /dev/sdX
C) cryptsetup open /dev/sdX
D) dm-crypt --format /dev/sdX


2. An X509 certificate contains the following information:
X509v3 Basic Constraints: critical CA:TRUE, pathlen:0
Which of the following statements are true regarding the certificate? (Choose THREE correct answers.)

A) This certificate may be used to sign certificates of subordinate certification authorities.
B) This certificate may never be used to sign any other certificates.
C) This certificate belongs to a certification authority.
D) This certificate will not be accepted by programs that do not understand the listed extension.
E) This certificate may be used to sign certificates that are not also a certification authority.


3. In nftables, what is the purpose of a "base chain" as opposed to a "regular chain"?

A) There is no functional difference between base and regular chains.
B) A base chain is used only for NAT rules.
C) A base chain is directly attached to a netfilter hook, such as input or forward, allowing it to receive packets from the kernel.
D) A base chain can only contain accept rules.


4. Which of the following is an example of a behavioral-based HID technique?

A) Rule-based detection
B) Heuristic-based detection
C) Anomaly-based detection
D) Signature-based detection


5. What is the purpose of the Linux Audit system?

A) To manage system log files
B) To detect intrusions and system changes
C) To manage installed packages
D) To automate host scans


Solutions:

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

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