Lpi 303-300 : LPIC Exam 303: Security, version 3.0
- Exam Code: 303-300
- Exam Name: LPIC Exam 303: Security, version 3.0
- Updated: Oct 04, 2026
- Q & A: 163 Questions and Answers
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Lpi 303-300 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Access Control | 8% | - Mandatory Access Control - Discretionary Access Control |
| Topic 2: Host Security | 13% | - Host Intrusion Detection - Host Hardening - Resource Control |
| Topic 3: Threats and Vulnerability Assessment | 5% | - Penetration Testing - Common Security Vulnerabilities and Threats |
| Topic 4: Cryptography | 17% | - X.509 Certificates and Public Key Infrastructures - DNS and Cryptography - Encrypted File Systems - X.509 Certificates for Encryption, Signing and Authentication |
| Topic 5: Network Security | 17% | - Network Hardening - Virtual Private Networks - Network Intrusion Detection - Packet Filtering |
Lpi LPIC Exam 303: Security, version 3.0 Sample Questions:
Which command is used to create an encrypted LUKS-formatted block device?
- A. cryptsetup open /dev/sdX
- B. dm-crypt --format /dev/sdX
- C. mkfs.luks /dev/sdX
- D. cryptsetup luksFormat /dev/sdX
Correct Answer: D 🗳️
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What is a symmetric key?
- A. A key used for encryption that is different from the key used for decryption
- B. A key used for decryption that is different from the key used for encryption
- C. A key used for both encryption and decryption that is generated randomly
- D. A key used for encryption and decryption that is the same
Correct Answer: D 🗳️
What happens when the command getfattr afile is run while the file afile has no extended attributes set?
- A. getfattr prints a warning and exits with a value of 1.
- B. No output is produced and getfattr exits with a value of 0.
- C. No outputs is produced and getfattr exits with a value of 1.
- D. getfattr prints a warning and exits with a values of 0.
Correct Answer: B 🗳️
In nftables, what is the purpose of a "base chain" as opposed to a "regular chain"?
- A. A base chain can only contain accept rules.
- B. A base chain is directly attached to a netfilter hook, such as input or forward, allowing it to receive packets from the kernel.
- C. A base chain is used only for NAT rules.
- D. There is no functional difference between base and regular chains.
Correct Answer: B 🗳️
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Which of the following commands displays all ebtable rules contained in the table filter including their packet and byte counters?
- A. ebtables -L -t filter -Lv
- B. ebtables -L -Lc -t filter
- C. ebtables -t filter -L --Lc
- D. ebtables -t nat -L -v
- E. ebtables -t filter -Ln -L
Correct Answer: C 🗳️
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