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Lpi LPIC-3 303-300

303-300

Exam Code: 303-300

Exam Name: LPIC Exam 303: Security, version 3.0

Updated: Aug 03, 2026

Q&A Number: 163 Q&As

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Lpi 303-300 Exam Syllabus Topics:

SectionObjectives
Cryptography- Data encryption and signing
- Public key infrastructure (PKI)
- OpenSSL usage and configuration
Vulnerability Assessment and Monitoring- Intrusion detection systems (IDS)
- Log analysis and auditing
Security Administration- System hardening
- Authentication mechanisms
Application Security- Container and service security
- Secure software configuration
Network Security- Firewalls (iptables, nftables)
- Secure network services
- VPN technologies
Access Control- Mandatory Access Control (MAC)
- SELinux and AppArmor
- Discretionary Access Control (DAC)

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

1. Linux Extended File Attributes are organized in namespaces. Which of the following names correspond to existing attribute namespaces?(Choose THREE correct answers.)

A) user
B) owner
C) trusted
D) system
E) default


2. What is the purpose of Linux capabilities, as introduced to divide the traditional all-or-nothing root privilege model?

A) They are used only within containerized environments.
B) They allow specific, granular privileges (such as binding to low-numbered ports) to be granted to a process without granting full root access.
C) They control network bandwidth allocation per process.
D) They replace the need for the setuid bit entirely on all binaries.


3. Which of the following parameters to openssl s_client specifies the host name to use for TLS Server Name Indication?

A) -servername
B) -vhost
C) -sniname
D) -host
E) -tlsname


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

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


5. What is a Trojan?

A) A type of virus
B) A type of phishing scam
C) A type of malware that disguises itself as legitimate software
D) A type of denial-of-service attack


Solutions:

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

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