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Lpi 303-300 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Cryptography	8%	- OpenPGP 1. Manage GnuPG keys 2. Web of trust concepts 3. Sign and encrypt data - Data Encryption 1. Encrypt files and storage devices 2. Use LUKS and dm-crypt 3. Secure data transmission - X.509 Certificates and Public Key Infrastructures 1. Certificate revocation and validation 2. Create and manage certificates 3. Manage certificate authorities
Topic 2: Network Security	12%	- Virtual Private Networks 1. IPsec and strongSwan 2. WireGuard 3. OpenVPN - Network Intrusion Detection 1. Kismet 2. Wireshark 3. tcpdump 4. Snort - Packet Filtering 1. NAT and connection tracking 2. iptables and ip6tables 3. nftables awareness 4. IP sets - Network Hardening 1. Secure network services 2. TCP wrappers and service restrictions
Topic 3: Threats and Vulnerability Assessment	3%	- Threat Analysis 1. Host-based threats 2. Network threats 3. Application threats 4. Credential and confidentiality threats - Vulnerability Assessment 1. Risk identification 2. Security scanning 3. OpenVAS
Topic 4: Access Control	8%	- Authentication and Authorization 1. Multi-factor authentication 2. Centralized authentication 3. PAM - Mandatory Access Control 1. Policy enforcement 2. AppArmor configuration 3. SELinux management - Discretionary Access Control 1. File permissions 2. Extended attributes 3. POSIX ACLs
Topic 5: Host Security	9%	- Resource Control 1. Process resource management 2. ulimits 3. cgroups - Host Intrusion Detection 1. Linux Audit system 2. Rootkit detection tools 3. AIDE integrity checking 4. Malware detection - Host Hardening 1. Kernel runtime protection 2. Secure boot process 3. Service hardening

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Lpi LPIC Exam 303: Security, version 3.0 Sample Questions (Q99-Q104):

NEW QUESTION # 99
What is the purpose of the GnuPG "trust level" assigned to a key, as opposed to a signature on that key?

A. It determines the key's expiration date.
B. It indicates how strongly the key's authenticity has been verified.
C. It is identical in meaning to a key signature and is redundant.
D. It indicates how much the owner trusts that key's holder to properly verify and sign other people's keys.

Answer: D

Explanation:
A trust level in GnuPG is a personal, local judgment about how much a user trusts a particular key's owner to carefully and correctly verify the identity of others before signing their keys. This is distinct from a signature, which asserts that a specific key's authenticity has been verified. Trust levels (such as none, marginal, full, and ultimate) affect how GnuPG calculates the validity of other keys in the web of trust based on the chain of signatures connecting them back to the user's own key.

NEW QUESTION # 100
Which of the following expressions are valid AIDE rules?
(Choose TWO correct answers.)

A. #/bin/
B. !/var/run/.*
C. /etc p+i+u+g
D. /usr=all
E. append: /var/log/*

Answer: B,C

NEW QUESTION # 101
Which of the following statements is true about chroot environments?

A. Symbolic links to data outside the chroot path are followed, making files and directories accessible
B. When using the command chroot, the started command is running in its own namespace and cannot communicate with other processes
C. Programs are not able to set a chroot path by using a function call, they have to use the command chroot
D. The chroot path needs to contain all data required by the programs running in the chroot environment
E. Hard links to files outside the chroot path are not followed, to increase security

Answer: D

NEW QUESTION # 102
Which option of the openvpn command should be used to ensure that ephemeral keys are not written to the swap space?

A. --keys-no-swap
B. --root-swap
C. --mlock
D. --no-swap

Answer: C

NEW QUESTION # 103
Which of the following is used to perform DNSSEC validation on behalf of clients?

A. Secondary name server
B. Recursive name server
C. Authoritative name server
D. Primary name server

Answer: B

NEW QUESTION # 104
......

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