- Who Can Sit for CHS-CY2
- What "No Prerequisites" Actually Means
- The Exam Format You Must Qualify For
- Vouchers: How Access Works
- Readiness Checkpoints, Domain by Domain
- Why Level 1 Knowledge Isn't Enough
- A Domain-Ordered Plan to Qualify Yourself
- After You Pass: Expiration and Next Steps
- Frequently Asked Questions
- CodeHS lists no specific prerequisites for the Cybersecurity Level 2 certification exam, though the Advanced Cybersecurity course is recommended.
- The exam is online and timed: 45 multiple-choice questions in 90 minutes, with a 60% passing score.
- Every attempt needs a voucher, and each voucher code is valid for exactly one attempt.
- Retakes are allowed with new vouchers; a passing certification expires after 10 years.
Who Can Sit for CHS-CY2
The CodeHS Cybersecurity Level 2 certification (CHS-CY2) is one of the more accessible entry points among cybersecurity credentials. CodeHS publishes no specific prerequisites for the exam. There is no required degree, no mandatory work-experience hours, and no formal gate you must clear before you are allowed to attempt it.
That said, "no prerequisites" is not the same as "no preparation required." The exam still tests a defined body of advanced material, and candidates who walk in cold tend to find the question pool demanding. If you are weighing how much effort the exam will take, our guide on how hard the CHS-CY2 exam is breaks down what trips people up, and the CHS-CY2 pass rate article explains how little public data exists on outcomes.
If you are new to the credential itself, start with what CHS-CY2 certification is for the big-picture context, then return here for the practical eligibility details.
What "No Prerequisites" Actually Means
CodeHS's own certification documentation states that there are no specific prerequisites for the Level 2 exam. Two practical consequences follow from that:
- You do not need to have completed a particular course first. A student who studied independently can attempt the exam on the same terms as a student enrolled in a CodeHS classroom.
- You do not need to hold a lower-level certificate first. Level 1 is not a formal gate for Level 2.
Think of the Advanced Cybersecurity course as the path of least resistance rather than a checkpoint. It is aligned with the kind of material the exam draws on, which makes it an efficient way to build the knowledge. But eligibility itself is open.
The Exam Format You Must Qualify For
Because there are no gating requirements, the real "requirements" of CHS-CY2 are the exam's own conditions. Know these before you schedule anything:
| Requirement | CHS-CY2 Detail |
|---|---|
| Delivery | Online, timed exam |
| Question count | 45 multiple-choice questions |
| Time limit | 90 minutes |
| Passing score | 60% |
| Prerequisites | None specified by CodeHS |
| Access | One voucher per attempt |
| Certification validity | 10 years |
With 45 questions and a 60% threshold, you need to answer a majority of the questions correctly to pass. We unpack the arithmetic and what it means for your margin for error in CHS-CY2 passing score: exactly what you need to pass. For timing and scheduling questions, see CHS-CY2 exam dates, testing windows, and scheduling.
Ninety minutes for 45 questions gives you a generous two minutes per question on average. The challenge is rarely the clock; it is recognizing which concept a scenario-style question is really testing.
Vouchers: How Access Works
The most concrete "requirement" in practice is the voucher. Per CodeHS's certification information:
- Each exam attempt requires a voucher.
- Each voucher code is valid for one attempt only.
- Students can retake the exam as needed, but each retake requires a new voucher.
This changes how you should think about readiness. Because every attempt consumes a voucher, there is a real incentive to sit the exam when you are consistently scoring well on practice material rather than treating the first attempt as a trial run. Many students receive vouchers through a teacher or school program, while independent candidates should check the official CodeHS certification pages for how vouchers are obtained. Exact pricing and sourcing vary, so we cover the money side separately in CHS-CY2 certification cost: complete pricing breakdown.
Key Takeaway
Treat a voucher as a single, valuable attempt. Use full-length timed practice, such as the questions on our CHS-CY2 practice test site, to confirm you are comfortably above 60% before you redeem it.
Readiness Checkpoints, Domain by Domain
Since formal prerequisites do not exist, a more useful way to "qualify" yourself is to check that you can meet the knowledge expectations of each of the five published exam domains. CodeHS publishes these topics without percentage weights, so you cannot safely assume any one domain is a minor topic. For a full walkthrough of each, see CHS-CY2 exam domains: complete guide to all 5 content areas.
Domain 1: Advanced Cryptography
You should be able to distinguish cipher families and explain how keys are used in different schemes.
- Block and transposition ciphers
- Asymmetric versus symmetric encryption, and when each is used
- Public key cryptography
- Hash functions and what they guarantee (and don't)
- Digital certificates and their role in trust
Domain 2: Advanced Networking
This is the broadest domain, spanning devices, physical controls, and protocols.
- Network devices: IDS, IPS, and UTM, and how they differ
- Access control concepts
- Physical security such as biometrics and mantraps
- Environmental controls
- Ports and protocols, including TCP versus UDP
- Wireless protocols such as 802.11ac
- Private networks: DMZ, VPN, and MAC filtering
- Mobile device security
Domain 3: Cyber Defense
Expect questions that ask you to identify an attack or malware type from a description.
- Threats, vulnerabilities, and exploits, and how they relate
- Malware types and prevention: Trojan, worm, rootkit, and others
- Network attacks: cross-site scripting, DDoS, botnets
- Internal attacks involving BIOS, UEFI, and DLP
Domain 4: Documentation
The governance-flavored domain. It rewards candidates who understand process, not just technology.
- Change management
- Incident response plans
- Software licenses
- Data policy, privacy, and protection
Domain 5: Risk Management
Know the vocabulary precisely; risk questions often hinge on telling similar terms apart.
- Types of vulnerabilities
- Risk assessment
- Risk response
- Penetration testing
A reasonable self-test: for each domain, can you explain every bullet above in your own words and recognize it inside a short scenario? If so, you meet the real bar for the exam.
Why Level 1 Knowledge Isn't Enough
A common misconception is that finishing Level 1 material means you are ready for Level 2. CodeHS states that the Level 2 exam topics are distinct from the recommended course curriculum, and that the exam should not be prepared for by substituting Level 1 content. In other words, the exam targets the advanced topic list above, not a repeat of introductory ideas.
| Question | Answer for CHS-CY2 |
|---|---|
| Is Level 1 required first? | No formal prerequisite is specified |
| Is Level 1 content enough to pass? | No; study the five Level 2 domains directly |
| What course is recommended? | Advanced Cybersecurity |
| Are domain weights published? | No, topics only |
Foundational comfort helps, since advanced topics build on basic security vocabulary. But the exam will ask about things like IDS versus IPS versus UTM or the mechanics of digital certificates, which go beyond a first-level treatment.
A Domain-Ordered Plan to Qualify Yourself
Because the domains are published without weights, a sensible approach is to build from concepts that other topics depend on. Here is one ordering tied directly to CHS-CY2's structure. For a deeper methodology, see our CHS-CY2 study guide for passing on your first attempt.
Advanced Cryptography
- Separate symmetric from asymmetric encryption and note where each is used
- Learn what hash functions provide and how certificates establish trust
- Why first: key and certificate ideas reappear in VPN and wireless questions
Advanced Networking
- Memorize the roles of IDS, IPS, and UTM and the DMZ/VPN/MAC filtering trio
- Review TCP versus UDP and wireless standards
- Add physical and environmental controls; this domain has the most distinct items to retain
Cyber Defense and Documentation
- Match malware types and network attacks to their defining behavior
- Cover change management, incident response plans, licenses, and data policy
Risk Management and Full Timed Practice
- Drill risk assessment versus risk response vocabulary and penetration testing
- Take 45-question, 90-minute timed sets and review every miss by domain
Once you are reliably clearing 60% on timed sets with room to spare, you have effectively met the only requirement that matters. A quick one-page recap is available in our CHS-CY2 cheat sheet, and the CHS-CY2 training overview covers learning options.
After You Pass: Expiration and Next Steps
Once earned, the CodeHS Cybersecurity Level 2 certification expires after 10 years, which is a long validity window compared with many industry credentials. That makes the credential something you can list on a resume and college application for a long time without worrying about frequent renewal.
For many students, the practical value is twofold: the structured knowledge itself, and a verifiable credential that shows initiative in an in-demand field. Pair it with projects, clubs, or competitions to strengthen that story.
Frequently Asked Questions
No. CodeHS lists no specific prerequisites for the Cybersecurity Level 2 exam. CodeHS does recommend the Advanced Cybersecurity course for preparation, but it is not a formal requirement.
The exam is online and timed, with 45 multiple-choice questions and a 90-minute timer. The passing score is 60%.
Yes. Students can retake the exam as needed. Each attempt requires a new voucher, because every voucher code is valid for only one attempt.
Certifications earned through CodeHS expire after 10 years, so a pass remains valid for a long period.
CodeHS publishes the exam topics without percentage weights. Plan to study all five domains: Advanced Cryptography, Advanced Networking, Cyber Defense, Documentation, and Risk Management.
If you meet the open eligibility rules and can consistently score above the 60% line under timed conditions, you are ready to redeem a voucher. Build confidence first with realistic questions on our CHS-CY2 practice test, and use the CHS-CY2 requirements page as your quick reference for eligibility details.