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Lpi 303-300 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Security Administration | - System hardening - Authentication mechanisms |
| Topic 2: Access Control | - SELinux and AppArmor - Discretionary Access Control (DAC) - Mandatory Access Control (MAC) |
| Topic 3: Cryptography | - Data encryption and signing - Public key infrastructure (PKI) - OpenSSL usage and configuration |
| Topic 4: Network Security | - Firewalls (iptables, nftables) - VPN technologies - Secure network services |
| Topic 5: Vulnerability Assessment and Monitoring | - Intrusion detection systems (IDS) - Log analysis and auditing |
| Topic 6: Application Security | - Secure software configuration - Container and service security |
Lpi LPIC Exam 303: Security, version 3.0 Sample Questions:
1. How are SELinux permissions related to standard Linux permissions? (Choose TWO correct answers.)
A) SELinux permissions are verified before standard Linux permissions.
B) SELinux permissions are verified after standard Linux permissions.
C) SELinux permissions override standard Linux permissions.
D) Standard Linux permissions override SELinux permissions.
2. What is the purpose of the "ausearch" command in relation to the Linux audit framework?
A) To restart the auditd service.
B) To search and filter existing audit log entries based on criteria such as key, user, or time range.
C) To generate summary reports of audit statistics.
D) To add new audit rules to the running kernel.
3. Which permission bit allows a user to delete a file?
A) Execute
B) Read
C) Write
D) SetUID
4. Which of the following keywords are built-in chairs for the iptables nat table? (Choose THREE correct answers.)
A) MASQUERADE
B) PROCESSING
C) OUTPUT
D) POSTROUTING
E) PREROUTING
5. What effect does the following command have on TCP packets?
iptables- A INPUT d 10.142.232.1 p tcp --dport 20:21 j ACCEPT
A) Accept only TCP traffic from 10.142.232.1 destined for port 20 or 21.
B) Drop all TCP traffic coming from 10.142.232.1 destined for port 20 or 21.
C) Accept all TCP traffic on port 20 and 21 for the IP address 10.142.232.1
D) Forward all TCP traffic not on port 20 or 21 to the IP address 10.142.232.1
Solutions:
| Question # 1 Answer: B,D | Question # 2 Answer: B | Question # 3 Answer: C | Question # 4 Answer: C,D,E | Question # 5 Answer: C |






