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Lpi 303-300 Exam Syllabus Topics:

Section	Weight	Objectives
Network Security	17%	- Packet Filtering - Network Hardening - Virtual Private Networks - Network Intrusion Detection
Host Security	13%	- Host Intrusion Detection - Host Hardening - Resource Control
Access Control	8%	- Mandatory Access Control - Discretionary Access Control
Cryptography	17%	- X.509 Certificates for Encryption, Signing and Authentication - X.509 Certificates and Public Key Infrastructures - DNS and Cryptography - 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 (Q20-Q25):

NEW QUESTION # 20
Which Fail2ban configuration file typically contains local, site-specific overrides that should not be modified in the default jail.conf file?

A. action.d/iptables.conf
B. filter.d/sshd.conf
C. jail.local
D. fail2ban.conf

Answer: C

Explanation:
Fail2ban's documentation recommends placing local, site-specific configuration overrides in jail.local (or files within jail.d/) rather than directly editing jail.conf, since jail.conf may be overwritten during package upgrades. Settings in jail.local take precedence over those in jail.conf.
The filter.d/ and action.d/ directories contain definitions for how to detect failures in specific log formats and how to execute a ban action, respectively, and are typically only edited when creating custom filters or actions.

NEW QUESTION # 21
Which command is used to view the access control list of a file?

A. chmod
B. ls
C. setfacl
D. getfacl

Answer: D

NEW QUESTION # 22
What is the primary function of an Intrusion Detection System (IDS) such as Snort or Suricata operating in network-based mode?

A. To perform DNS resolution for network hosts.
B. To actively block malicious traffic before it reaches its destination.
C. To encrypt network traffic between hosts.
D. To passively monitor network traffic and generate alerts based on signature or anomaly-based detection rules.

Answer: D

Explanation:
A network-based Intrusion Detection System (NIDS), such as Snort or Suricata operating in IDS mode, passively monitors network traffic, typically via a mirrored switch port or network tap, and compares it against a set of signatures or behavioral rules to detect potential malicious activity, generating alerts for further investigation. This differs from an Intrusion Prevention System (IPS), which operates inline with the traffic path and can actively drop or block traffic matching a detection rule in real time, rather than only alerting after the fact.

NEW QUESTION # 23
Linux Extended File Attributes are organized in namespaces. Which of the following names correspond to existing attribute namespaces?(Choose THREE correct answers.)

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

Answer: B,C,D

NEW QUESTION # 24
What is Linux Malware Detect?

A. A package management tool
B. A tool to automate host scans
C. A tool to detect malware on a Linux system
D. A configuration management tool

Answer: C

NEW QUESTION # 25
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