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

020-100 exam collection

Exam Code: 020-100

Exam Name: Linux Professional Institute Security Essentials Exam 020

Updated: Aug 09, 2026

Q & A: 225 Questions and Answers

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Lpi 020-100 Exam Syllabus Topics:

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

Lpi Linux Professional Institute Security Essentials Exam 020 Sample Questions:

1. You receive an email from an unknown sender claiming to be from your bank. The email includes a link to a website where you are asked to enter your bank account login information. What type of attack is this?
Response:

A) Email spam
B) Scareware
C) Social engineering
D) Phishing


2. What is an on-path attack in penetration testing?
Response:

A) An attack where the attacker places their workstation between two hosts during communication to intercept, monitor, and relay communications
B) An attack where the attacker impersonates a legitimate user to gain unauthorized access to a system
C) An attack where the attacker sends a large amount of traffic to the target system to overload it
D) An attack where the attacker injects malicious code into the host system


3. What is one of the primary factors that determines data retention requirements for backups?
Response:

A) The sensitivity of the data being backed up
B) The cost implications of retaining backup data for extended periods
C) Regulatory requirements and compliance
D) The length of time an organization has been in operation


4. What do web browsers check when verifying the validity of an X.509 certificate?
Response:

A) Expiration date and issuer
B) Key usage
C) subjectAltName
D) Subject


5. Which of the following is a security implication of shared access to data in the cloud?
Response:

A) Improved data security
B) Decreased risk of data loss
C) Improved data accessibility
D) Increased risk of unauthorized access to data


Solutions:

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

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