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Lpi 303-300 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Network Security	17%	- Network Intrusion Detection - Virtual Private Networks - Packet Filtering - Network Hardening
Topic 2: Access Control	8%	- Discretionary Access Control - Mandatory Access Control
Topic 3: Host Security	13%	- Host Hardening - Resource Control - Host Intrusion Detection
Topic 4: Cryptography	17%	- Encrypted File Systems - X.509 Certificates for Encryption, Signing and Authentication - X.509 Certificates and Public Key Infrastructures - DNS and Cryptography
Topic 5: 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 (Q92-Q97):

NEW QUESTION # 92
Which command is used to relabel files according to the currently loaded SELinux policy?

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

Answer: D

Explanation:
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.

NEW QUESTION # 93
Which of the following stanzas is a valid client configuration for FreeRADIUS?

A. client private-network-1 {
ip = 192.0.2.0/24
passwd = testing123-1
}
B. client private-network-1 {
ipaddr = 192.0.2.0/24
password = testing123-1
}
C. client private-network-1 {
ipaddr = 192.0.2.0/24
secret = testing123-1
}
D. client private-network-1 {
ip = 192.0.2.0/24
password = testing123-1
}
E. client private-network-1 {
ip = 192.0.2.0/24
secret = testing123-1
}

Answer: C

NEW QUESTION # 94
Which of the following resources of a shell and its child processes can be controlled by the Bash build- in command ulimit? (Choose THREE correct answers.)

A. The maximum number of newly created files
B. The maximum number of open file descriptors
C. The maximum number of environment variables
D. The maximum number of user processes
E. The maximum size of written files

Answer: B,D,E

NEW QUESTION # 95
What is the purpose of Linux capabilities, as introduced to divide the traditional all-or-nothing root privilege model?

A. They are used only within containerized environments.
B. They control network bandwidth allocation per process.
C. They allow specific, granular privileges (such as binding to low-numbered ports) to be granted to a process without granting full root access.
D. They replace the need for the setuid bit entirely on all binaries.

Answer: C

Explanation:
Linux capabilities divide the privileges traditionally associated with the root superuser into a set of distinct, individually grantable units, such as CAP_NET_BIND_SERVICE (allowing a process to bind to privileged ports below 1024) or CAP_SYS_TIME (allowing a process to change the system clock). This allows a process or binary to be granted only the specific privileges it actually needs, following the principle of least privilege, rather than requiring full root access or reliance on the traditional setuid bit.

NEW QUESTION # 96
What is a certificate chain?

A. A sequence of certificates used to verify the authenticity of a digital certificate
B. A sequence of public and private keys used for encryption and decryption
C. A chain of public and private keys used for encryption and decryption
D. A chain of digital signatures used to verify the authenticity of a certificate

Answer: A

NEW QUESTION # 97
......

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