Updated Lpi 303-300 Exam Questions For Accurately Prepare [2026]

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Lpi 303-300 Exam Syllabus Topics:

Section	Weight	Objectives
Access Control	8%	- Discretionary Access Control - Mandatory Access Control
Network Security	17%	- Virtual Private Networks - Network Intrusion Detection - Packet Filtering - Network Hardening
Host Security	13%	- Host Hardening - Resource Control - Host Intrusion Detection
Cryptography	17%	- DNS and Cryptography - X.509 Certificates for Encryption, Signing and Authentication - X.509 Certificates and Public Key Infrastructures - Encrypted File Systems
Threats and Vulnerability Assessment	5%	- Common Security Vulnerabilities and Threats - Penetration Testing

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Lpi LPIC Exam 303: Security, version 3.0 Sample Questions (Q29-Q34):

NEW QUESTION # 29
Which of the following is a best practice for implementing HID?

A. Disable HID when not actively monitoring for security incidents
B. Configure HID to block all incoming traffic
C. Configure HID to alert security personnel of potential security incidents
D. Install HID on every computer in the network

Answer: C

NEW QUESTION # 30
Which of the following are differences between AppArmor and SELinux? (Choose TWO correct answers)

A. The SELinux configuration is loaded at boot time and cannot be changed later on. AppArmor provides user space tools to change its behavior.
B. SELinux stores information in extended file attributes. AppArmor does not maintain file specific information and states.
C. AppArmor neither requires nor allows any specific configuration. SELinux must always be manually configured.
D. AppArmor is implemented in user space only. SELinux is a Linux Kernel Module.
E. AppArmor is less complex and easier to configure than SELinux.

Answer: B,E

NEW QUESTION # 31
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 can only contain accept rules.
C. A base chain is used only for NAT rules.
D. A base chain is directly attached to a netfilter hook, such as input or forward, allowing it to receive packets from the kernel.

Answer: D

Explanation:
A base chain in nftables is attached directly to one of the underlying netfilter hooks (such as prerouting, input, forward, output, or postrouting), which allows packets traversing the network stack at that point to be evaluated against the chain's rules. A regular chain, by contrast, is not attached to any hook and can only be reached when explicitly called (jumped or goto'd) from another chain, functioning similarly to a subroutine used for rule organization.

NEW QUESTION # 32
Which of the following commands makes the contents of the eCryptfs encrypted directory ~/Private available to the user?

A. decryptfs
B. ecryptfs-manage-directory
C. ecryptfsclient
D. ecryptfs.mount
E. ecryptfs-mount-private

Answer: E

NEW QUESTION # 33
What is the purpose of the OpenVPN "tls-auth" or "tls-crypt" directive?

A. To add an additional layer of HMAC authentication (or full encryption, with tls-crypt) to the TLS control channel, protecting against certain DoS and port-scanning attacks.
B. To generate the server's X.509 certificate automatically.
C. To disable TLS entirely and use a static key instead.
D. To compress the VPN traffic.

Answer: A

Explanation:
The tls-auth directive adds an additional layer of HMAC signing to all TLS handshake packets using a pre-shared static key, providing protection against certain denial-of-service attacks, TLS stack vulnerabilities, and port scanning, since packets without a valid HMAC are silently dropped before any TLS processing occurs. tls-crypt provides a similar benefit but additionally encrypts the entire TLS control channel, also hiding metadata like the certificate used, offering stronger protection than tls-auth alone while still requiring the standard TLS/certificate-based data channel.

NEW QUESTION # 34
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