LPI Security Essentials 020-100 Study Guide

What Does the LPI Security Essentials 020-100 Exam Cover?

The LPI Security Essentials (020-100) is a 60-minute exam of 40 questions with a passing score of 500 out of 800 and a fee of $120 USD, offered by the Linux Professional Institute. It validates a vendor-neutral, foundational understanding of IT security across five weighted objective areas, from core concepts to identity and privacy.

How Is the Exam Structured?

Each objective area carries a weight that reflects how many questions it contributes, and the totals guide where to spend time. Network and Service Security leads, with Encryption and Device and Storage Security close behind, while Security Concepts is lighter. The exam is knowledge-based and conceptual rather than hands-on, suiting its role as a foundation.

Objective Weightings at a Glance

The weights are fairly even, with the top three areas close together. That balance reflects the exam’s purpose: a rounded foundation rather than depth in any single area. A study plan that covers all five proportionally is the right approach.

Who Should Take the LPI Security Essentials Certification?

Security Essentials is aimed at a deliberately wide audience: students, career changers, and any professional who wants a solid grounding in IT security without specialising. It suits developers, administrators, and non-technical staff alike, and it works as a first step for those considering a security career.

“We would like to encourage organizations and enterprises of any kind to consider Security Essentials as a baseline of security education for all their members and employees.”

A Vendor-Neutral Foundation

Because it is vendor-neutral, the knowledge transfers everywhere rather than tying you to one platform. That makes it a strong complement to platform-specific skills, and a sensible companion to the wider LPI track. Those building Linux skills alongside it often pair it with the LPI 102-500 certification for a rounded systems foundation.

A Stepping Stone

For those aiming at a security career, Security Essentials provides the vocabulary and concepts that deeper certifications assume. It pairs naturally with other foundational credentials, and this guide to cybersecurity fundamentals shows how entry-level security certifications reinforce one another.

What Does the Security Concepts Domain Test?

The Security Concepts domain establishes the framework for everything else. Though it is the lightest area by weight, it covers the goals, roles, and actors of security, risk assessment and management, and ethical behaviour, which together form the vocabulary the rest of the exam relies on.

Goals, Risk, and Ethics

The domain expects you to understand the fundamental goals of security, who the actors are on both sides, and how risk is assessed and managed. Familiarity with a recognised approach such as the NIST Cybersecurity Framework helps frame these concepts, and understanding how vulnerabilities are scored through systems like CVSS connects risk theory to practice.

Why Concepts Matter First

Although lightly weighted, this domain underpins the others. Understanding risk and the actors involved makes the later technical domains meaningful rather than arbitrary, so it is worth mastering early even though it contributes fewer questions directly.

Why Is Encryption a Heavily Weighted Domain?

Encryption is one of the most heavily weighted domains because it is the mechanism that protects data everywhere it lives and travels. It covers cryptography and public key infrastructure, and the application of encryption to the web, email, and data storage. It is where abstract security goals become concrete protection.

Cryptography and PKI

The domain expects a conceptual grasp of cryptography and how public key infrastructure enables trust online. Understand the difference between symmetric and asymmetric encryption, what a certificate authority does, and how public key infrastructure underpins secure communication. This is foundational to the web and email encryption topics that follow.

Encryption in Practice

Beyond theory, the domain covers where encryption is applied: securing web traffic, protecting email, and encrypting stored data. The exam expects you to recognise how these everyday protections work and why they matter, connecting the cryptographic concepts to the situations a normal user encounters daily.

What Does Device and Storage Security Cover?

Device and Storage Security addresses protecting the endpoints and data that attackers target. Equally weighted with Encryption, it covers hardware security, application security, malware, and data availability, spanning the physical device, the software on it, and the threats against both.

Hardware, Applications, and Malware

The domain expects familiarity with securing hardware, the basics of application security, and the nature of malware in its various forms. Understand how malware spreads and what defends against it, since this is the threat most users encounter directly. The exam treats these as practical awareness rather than deep technical analysis.

Data Availability

Availability rounds out the domain, covering the idea that data must not only be protected from theft but also remain accessible. Understand the basic principles of backup and availability, connecting security to resilience, since data that is safe but unreachable has still failed its purpose.

Why Is Network and Service Security the Largest Domain?

Network and Service Security is the largest domain because most threats travel across networks, and understanding them is central to any security foundation. It covers networks, network services, and the internet, network and internet security, and network encryption and anonymity.

Networks and the Internet

The domain expects a working understanding of how networks and internet services operate, since you cannot secure what you do not understand. Know the basics of common network services and how the internet connects them, as this grounding makes the security topics that follow comprehensible.

Network Security and Anonymity

Building on that foundation, the domain covers network and internet security threats and defences, and the role of encryption and anonymity on the network. Understand how traffic is protected in transit and the basics of anonymity technologies, connecting the encryption domain to its most common application: the network itself.

What Does Identity and Privacy Require?

The Identity and Privacy domain covers who you are online and how your information is protected. It spans identity and authentication, information confidentiality and secure communication, and privacy protection, addressing both organisational security and the individual’s rights and safety.

Identity and Authentication

The domain expects understanding of how identity is established and verified online, including authentication methods and their strengths. This connects to real daily decisions, from choosing strong authentication to recognising why weak identity controls are a common point of failure.

Privacy Protection

Privacy is treated as a security concern in its own right. The domain covers confidentiality, secure communication, and the protection of personal privacy, reflecting that security is not only about defending organisations but also about protecting individuals and their data in an increasingly monitored world.

What Value Does the Certification Offer?

Security Essentials is less about a specific job title and more about a baseline that benefits almost any role. It signals that its holder understands core security concepts, which is increasingly expected of developers, administrators, and general staff as security awareness becomes a shared responsibility rather than a specialist silo.

A Baseline for Everyone

Its distinctive value is breadth of relevance. For technical professionals it provides a security grounding that complements their specialty; for non-specialists it builds the awareness that reduces human risk, the factor behind most breaches. As a foundation, it also prepares those who want to pursue a dedicated security career.

Where It Leads

The certification opens the door to further security study rather than to a single role. It establishes the concepts that intermediate and advanced certifications assume, making the next step less daunting. LPI’s own announcement of the Security Essentials certificate describes its intended place as a baseline of security education.

How Should You Structure a 020-100 Study Plan?

Four to six weeks at four to six hours per week suits most candidates, since this is a foundational rather than an advanced exam. Because the content is conceptual, reading and comprehension matter more than lab work, though relating each concept to real, everyday examples makes it stick far better than rote memorisation.

A Six-Week Sequence

1. Week one – security concepts. Establish the goals, roles, risk, and ethics that frame the whole exam.
2. Weeks two to three – encryption. Work through cryptography, PKI, and encryption for web, email, and storage.
3. Week four – device and storage security. Cover hardware, applications, malware, and data availability.
4. Week five – network security. The largest domain. Study networks, services, and network security and anonymity.
5. Week six – identity, privacy, and review. Cover authentication and privacy, then move to timed practice.

The Habit That Separates Passes From Retakes

Relate every concept to something real. Because the exam is conceptual, candidates who connect each topic to a familiar example, why a website shows a padlock, how a phishing email works, retain the material far better than those who memorise definitions. Working through a full 020-100 practice exam under timed conditions confirms that the concepts have taken hold across all five domains.

Frequently Asked Questions

How many questions are on the 020-100 exam?

The exam contains 40 questions to be completed in 60 minutes. That is a comfortable pace for a foundational, knowledge-based exam covering five objective areas.

What is the passing score for LPI Security Essentials?

The passing score is 500 out of 800. Because the objective areas are fairly evenly weighted, balanced coverage of all five is the practical requirement.

How much does the 020-100 exam cost?

The exam fee is $120 USD, offered by the Linux Professional Institute. Pricing may vary by region, and LPI periodically offers discounts through partners and programmes.

Is LPI Security Essentials a Linux exam?

No. Despite being offered by the Linux Professional Institute, Security Essentials is vendor-neutral and platform-agnostic, covering general IT security concepts rather than Linux-specific administration.

Which domain carries the most weight?

Network and Service Security carries the most weight, followed closely by Encryption and Device and Storage Security. Security Concepts is the lightest, though it underpins the others.

Are there prerequisites for the exam?

There are no formal prerequisites. Security Essentials is designed as an entry point, accessible to students, career changers, and professionals from any background.

Is the exam hands-on?

No. The exam is knowledge-based and conceptual rather than practical, suiting its role as a foundational credential that builds understanding rather than specific tool skills.

Who should consider this certification?

Almost anyone in a modern organisation, from developers and administrators to non-technical staff. LPI positions it as a baseline of security education suitable for all employees.

What can I do after Security Essentials?

It prepares you for more advanced security certifications by establishing core concepts and vocabulary. It is a foundation to build a security career on rather than an endpoint in itself.

How long does it take to prepare for the 020-100?

Four to six weeks at four to six hours per week is realistic for most candidates, given its foundational level. Those entirely new to IT may benefit from a little longer.

Conclusion

LPI Security Essentials fills a real and growing need: a vendor-neutral foundation in security for the many people whose decisions affect an organisation’s safety but who were never taught the basics. Its five domains cover the essential ground, from concepts and encryption through device and network security to identity and privacy, in balanced, approachable proportions.

Because the exam is conceptual, the best preparation connects each topic to real, everyday examples rather than memorising definitions. Cover all five domains proportionally, and lean slightly into the encryption and network areas that carry the most weight.

Plan four to six weeks, relate every concept to something you recognise, and treat the certification as the baseline it is designed to be. Security Essentials will not make you a security specialist, but it will make you genuinely security-aware, and that foundation is valuable in almost any role.