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Lpi 303-300 Exam Syllabus Topics:

Section	Weight	Objectives
Threats and Vulnerability Assessment	3%	- Threat Analysis 1. Network threats 2. Credential and confidentiality threats 3. Application threats 4. Host-based threats - Vulnerability Assessment 1. OpenVAS 2. Risk identification 3. Security scanning
Access Control	8%	- Mandatory Access Control 1. AppArmor configuration 2. SELinux management 3. Policy enforcement - Authentication and Authorization 1. Centralized authentication 2. Multi-factor authentication 3. PAM - Discretionary Access Control 1. Extended attributes 2. File permissions 3. POSIX ACLs
Cryptography	8%	- X.509 Certificates and Public Key Infrastructures 1. Manage certificate authorities 2. Create and manage certificates 3. Certificate revocation and validation - OpenPGP 1. Web of trust concepts 2. Manage GnuPG keys 3. Sign and encrypt data - Data Encryption 1. Use LUKS and dm-crypt 2. Encrypt files and storage devices 3. Secure data transmission
Network Security	12%	- Network Intrusion Detection 1. tcpdump 2. Snort 3. Wireshark 4. Kismet - Network Hardening 1. Secure network services 2. TCP wrappers and service restrictions - Virtual Private Networks 1. WireGuard 2. IPsec and strongSwan 3. OpenVPN - Packet Filtering 1. iptables and ip6tables 2. NAT and connection tracking 3. IP sets 4. nftables awareness
Host Security	9%	- Host Intrusion Detection 1. Malware detection 2. Linux Audit system 3. Rootkit detection tools 4. AIDE integrity checking - Host Hardening 1. Kernel runtime protection 2. Secure boot process 3. Service hardening - Resource Control 1. ulimits 2. Process resource management 3. cgroups

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Lpi LPIC Exam 303: Security, version 3.0 Sample Questions (Q158-Q163):

NEW QUESTION # 158
Which command, included in BIND, generates DNSSEC keys? (Specify ONLY the command without any path or parameters.) Solution: dnssec-keygen Determine whether the given solution is correct?

A. Correct
B. Incorrect

Answer: A

NEW QUESTION # 159
What happens when the command getfattr afile is run while the file afile has no extended attributes set?

A. getfattr prints a warning and exits with a value of 1.
B. No output is produced and getfattr exits with a value of 0.
C. No outputs is produced and getfattr exits with a value of 1.
D. getfattr prints a warning and exits with a values of 0.

Answer: B

NEW QUESTION # 160
Which of the following methods can be used to deactivate a rule in Snort? (Choose TWO correct answers.)

A. By adding a pass rule to /etc/snort/rules.deactivated and waiting for Snort to reload its rules files automatically.
B. By deleting the rule and waiting for Snort to reload its rules files automatically.
C. By placing a pass rule in local.rules and restarting Snort.
D. By placing a # in front of the rule and restarting Snort.

Answer: C,D

NEW QUESTION # 161
What is a trust anchor?

A. A list of private keys that are trusted by a particular CA
B. A list of public keys that are trusted by a particular CA
C. A key pair that is generated by a particular CA
D. A root certificate that is trusted by a particular CA

Answer: D

NEW QUESTION # 162
In nftables, what is the purpose of a "base chain" as opposed to a "regular chain"?

A. A base chain is used only for NAT rules.
B. There is no functional difference between base and regular chains.
C. A base chain can only contain accept 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 # 163
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