Lpi : 303-300 Questions & Answers

Updated: Aug 20, 2026

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Lpi 303-300 Exam Syllabus Topics:

SectionWeightObjectives
Host Security9%- Resource Control
  • 1. cgroups
  • 2. Process resource management
  • 3. ulimits
- Host Hardening
  • 1. Kernel runtime protection
  • 2. Service hardening
  • 3. Secure boot process
- Host Intrusion Detection
  • 1. Malware detection
  • 2. AIDE integrity checking
  • 3. Rootkit detection tools
  • 4. Linux Audit system
Threats and Vulnerability Assessment3%- Vulnerability Assessment
  • 1. Risk identification
  • 2. OpenVAS
  • 3. Security scanning
- Threat Analysis
  • 1. Host-based threats
  • 2. Network threats
  • 3. Credential and confidentiality threats
  • 4. Application threats
Access Control8%- Authentication and Authorization
  • 1. PAM
  • 2. Centralized authentication
  • 3. Multi-factor authentication
- Mandatory Access Control
  • 1. AppArmor configuration
  • 2. SELinux management
  • 3. Policy enforcement
- Discretionary Access Control
  • 1. Extended attributes
  • 2. POSIX ACLs
  • 3. File permissions
Network Security12%- Virtual Private Networks
  • 1. IPsec and strongSwan
  • 2. WireGuard
  • 3. OpenVPN
- Packet Filtering
  • 1. NAT and connection tracking
  • 2. iptables and ip6tables
  • 3. nftables awareness
  • 4. IP sets
- Network Intrusion Detection
  • 1. Wireshark
  • 2. Kismet
  • 3. tcpdump
  • 4. Snort
- Network Hardening
  • 1. Secure network services
  • 2. TCP wrappers and service restrictions
Cryptography8%- OpenPGP
  • 1. Manage GnuPG keys
  • 2. Web of trust concepts
  • 3. Sign and encrypt data
- X.509 Certificates and Public Key Infrastructures
  • 1. Certificate revocation and validation
  • 2. Manage certificate authorities
  • 3. Create and manage certificates
- Data Encryption
  • 1. Secure data transmission
  • 2. Use LUKS and dm-crypt
  • 3. Encrypt files and storage devices

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

1. What is a symmetric key?

A) A key used for encryption and decryption that is the same
B) A key used for decryption that is different from the key used for encryption
C) A key used for encryption that is different from the key used for decryption
D) A key used for both encryption and decryption that is generated randomly


2. Which tool can be used to check for rootkits on a Linux system?

A) chkrootkit
B) rpm
C) OpenSCAP
D) AIDE


3. Which command included in the Linux Audit system provides searching and filtering of the audit log? (Specify ONLY the command without any path or parameters.) Solution: ausearch Determine whether the given solution is correct?

A) Correct
B) Incorrect


4. Which of the following lines in an OpenSSL configuration adds an X 509v3 Subject Alternative Name extension for the host names example.org and www.example.org to a certificate?

A) subject= CN= www.example.org, CN=example.org
B) subjectAltName: www.example.org, subjectAltName: example.org
C) subjectAltName = DNS: www.example.org, DNS:example.org
D) extension= SAN: www.example.org, SAN:example.org
E) commonName = subjectAltName= www.example.org, subjectAltName = example.org


5. Which of the following statements describes the purpose of ndpmon?

A) It monitors the availability of a network link by querying network interfaces.
B) It monitors the network for IPv4 nodes that have not yet migrated to IPv6.
C) It monitors the network for neighbor discovery messages from new IPv6 hosts and routers.
D) It monitors log files for failed login attempts in order to block traffic from offending network nodes.
E) It monitors remote hosts by periodically sending echo requests to them.


Solutions:

Question # 1
Answer: A
Question # 2
Answer: A
Question # 3
Answer: A
Question # 4
Answer: C
Question # 5
Answer: C

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