Lpi Linux Professional Institute Security Essentials Exam 020 : 020-100 Exam

  • Exam Code: 020-100
  • Exam Name: Linux Professional Institute Security Essentials Exam 020
  • Updated: Sep 05, 2026
  • Q & A: 225 Questions and Answers

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Lpi 020-100 Exam Syllabus Topics:

SectionObjectives
Topic 1: Network Security Basics- Firewalls Fundamentals
- Secure Network Protocols
Topic 2: Operational Security- Logging and Monitoring
- System Updates and Patching
Topic 3: Security Fundamentals- Threats and Vulnerabilities
- Core Security Concepts
Topic 4: Cryptography Basics- Hashing and Integrity
- Encryption and Decryption Concepts
Topic 5: Access Control and Authentication- User and Permission Management
- Authentication Methods
Topic 6: Linux System Security- File Permissions and Ownership
- Basic System Hardening

Lpi Linux Professional Institute Security Essentials Exam 020 Sample Questions:

Question 1

What type of malware is stored in the first sector of a hard drive and is loaded into memory whenever the computer boots up?
Response:

A. Boot sector virus
B. Worm
C. Trojan
D. Keylogger


Question 2

Which of the following mechanisms primarily ensures that a digital certificate is still valid?
Response:

A. Advanced Encryption Standard (AES)
B. Secure Hash Algorithm (SHA)
C. Certificate Signing Request (CSR)
D. Certificate Revocation List (CRL)


Question 3

Which of the following is an example of how an attacker might use impersonation during a physical penetration test?
Response:

A. Asking a lot of questions to elicit information
B. Using a pretext to convince a victim to take a desired action
C. Sending a fraudulent email to an employee
D. Pretending to be a support technician


Question 4

Which of the following is a nonprofit organization that provides free digital certificates?
Response:

A. Let,s Encrypt
B. Trusted Root-CA
C. Digital signature
D. Public Key Infrastructure (PKI)


Question 5

What is email spam?
Response:

A. Unsolicited and unwanted email
B. Sensitive information sent via email
C. Encrypted email
D. Emails from trusted sources


Solutions:

Question 1
Answer: A
Question 2
Answer: D
Question 3
Answer: D
Question 4
Answer: A
Question 5
Answer: A

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