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Lpi 303-300 Exam Syllabus Topics:

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

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最新的 LPIC-3 303-300 免費考試真題 (Q85-Q90):

問題 #85
Which IPsec mode encapsulates and protects the entire original IP packet, including its header, typically used for site-to-site VPN gateways?

A. Main mode
B. Aggressive mode
C. Transport mode
D. Tunnel mode

答案：D

解題說明：
IPsec Tunnel mode encapsulates the entire original IP packet, including its original header, inside a new IP packet with a new header. This allows the original source and destination addresses to be hidden and enables IPsec to be used between gateways protecting entire private networks, such as in a site-to-site VPN. Transport mode, by contrast, only protects the payload of the original packet and retains the original IP header, making it more suitable for host-to-host communication.

問題 #86
What option of mount.cifs specifies the user that appears as the local owner of the files of a mounted CIFS share when the server does not provide ownership information?
(Specify ONLY the option name without any values or parameters.)
Solution: uid=arg
Determine whether the given solution is correct?

A. Correct
B. Incorrect

答案：A

問題 #87
Which command is used to relabel files according to the currently loaded SELinux policy?

A. setsebool
B. restorecon
C. chcon
D. semanage

答案：B

解題說明：
The restorecon command restores the default SELinux security context of one or more files based on the rules defined in the currently loaded policy's file contexts database. This is useful after files have been moved, copied, or had their context manually altered. chcon changes a file's context to an arbitrary value, but does not use policy-defined defaults and does not persist across a full relabel. semanage manages various aspects of SELinux policy, such as port and user mappings, while setsebool toggles SELinux boolean values.

問題 #88
Which of the following types can be specified within the Linux Audit system? (Choose THREE correct answers.)

A. Console rules
B. Network connection rules
C. Control rules
D. System call rules
E. File system rules

答案：C,D,E

問題 #89
What is a honeypot?

A. A network security tool designed to lure attackers into a trap
B. A type of phishing scam
C. A type of virus
D. A type of denial-of-service attack

答案：A

問題 #90
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