- What "CHS-CY2 Training" Actually Means
- Know the Exam Before You Train for It
- Training Block 1: Advanced Cryptography
- Training Block 2: Advanced Networking
- Training Block 3: Cyber Defense
- Training Block 4: Documentation
- Training Block 5: Risk Management
- Scheduling the Five Domains
- Training With Practice Questions
- After Training: Vouchers, Retakes, and Career Use
- Frequently Asked Questions
- The CHS-CY2 exam has 45 multiple-choice questions, a 90-minute timer, and a 60% passing score.
- CodeHS recommends its Advanced Cybersecurity course for preparation, but no prerequisites are required to sit the exam.
- Training should follow the five official domains: cryptography, networking, cyber defense, documentation, and risk management.
- Each exam attempt needs its own voucher code; retakes use new vouchers.
What "CHS-CY2 Training" Actually Means
When people search for CHS-CY2 training, they usually want one of three things: a course to take, a plan to follow, or a way to test whether they are ready. For the CodeHS Cybersecurity Level 2 certification, all three come down to the same thing: building working knowledge of the five domains the exam covers, then confirming that knowledge under timed conditions.
CodeHS publishes the exam topics and recommends its Advanced Cybersecurity course as preparation. The key detail is that the exam topics are distinct from the recommended course curriculum. The course is a good vehicle for learning, but the exam objectives are what you are really training against. If you want the broader context first, the overview in What Is CHS-CY2 Certification? explains what the credential represents.
Know the Exam Before You Train for It
Good training starts with the format, because the format determines how you should practice. The CHS-CY2 exam is an online, timed assessment made up of 45 multiple-choice questions with a 90-minute timer. The passing score is 60%. That works out to roughly two minutes per question, which is generous for recall-based items but tighter if you tend to second-guess scenario questions.
| Exam Element | CHS-CY2 Detail |
|---|---|
| Issuer | CodeHS |
| Format | Online, timed, multiple choice |
| Number of questions | 45 |
| Time limit | 90 minutes |
| Passing score | 60% |
| Prerequisites | None required; Advanced Cybersecurity course recommended |
| Attempts | One voucher code per attempt |
| Certification validity | 10 years |
CodeHS publishes the topics for each domain but does not publish percentage weights. That means you cannot safely skip a domain on the assumption that it is lightly tested. Plan for balanced coverage across all five, and read the breakdown in CHS-CY2 Exam Domains 2026: Complete Guide to All 5 Content Areas for a topic-by-topic look. For a closer look at scoring, see CHS-CY2 Passing Score 2026.
Training Block 1: Advanced Cryptography
Cryptography is where candidates most often discover that recognizing a term is different from explaining how it works. The exam covers block and transposition ciphers, asymmetric and symmetric encryption, public key cryptography, hash functions, and digital certificates. Training here should be about contrasts, because multiple-choice questions love to ask which of two similar concepts applies.
Domain 1: Advanced Cryptography
Be able to explain what each concept does, when it is used, and how it differs from its neighbor.
- Block vs. transposition ciphers: understand that one transforms fixed-size chunks of data while the other rearranges the positions of existing characters.
- Symmetric vs. asymmetric encryption: know the key-sharing problem that symmetric encryption creates and how asymmetric encryption addresses it.
- Public key cryptography: be clear on which key encrypts, which key decrypts, and how the same pair supports digital signatures.
- Hash functions: know they are one-way and why that makes them suited to integrity checks rather than confidentiality.
- Digital certificates: understand their role in binding a public key to an identity and why trust in the issuer matters.
A Practical Drill for Cryptography
Build a two-column comparison for every pair above and force yourself to write one sentence on when each is the right tool. If you cannot say why a hash would not protect a message's confidentiality, you are not ready for a scenario question that hides that distinction inside a business story. If you do your own pacing work, the walkthrough in CHS-CY2 Study Guide 2026: How to Pass on Your First Attempt is a useful companion.
Training Block 2: Advanced Networking
Advanced Networking is the broadest domain by topic count, so it deserves the longest training block. It spans network devices, access control, physical security, environmental controls, ports and protocols, wireless standards, private network designs, and mobile device security.
Domain 2: Advanced Networking
Group the content into three layers: what protects the network, what protects the building, and what protects the endpoint.
- Network devices: know the difference in purpose between IDS, IPS, and UTM, in particular that detection alerts while prevention blocks, and that a UTM bundles several functions.
- Access control: be able to reason about who or what gets access to which resource and by what mechanism.
- Physical security: biometrics and mantraps appear in the published topics; understand what threat each one addresses.
- Environmental controls: know why facilities controls matter to availability of systems.
- Ports and protocols: compare TCP and UDP, including reliability versus speed tradeoffs.
- Wireless protocols: recognize 802.11 standards such as 802.11ac and how wireless security choices differ.
- Private networks: DMZ, VPN, and MAC filtering each solve a different problem; practice matching the tool to the scenario.
- Mobile device security: think about risks introduced by portable, personally carried endpoints.
Because this domain is wide, expect to revisit it more than once. Many candidates find it the hardest to retain, which is a theme in How Hard Is the CHS-CY2 Exam? Complete Difficulty Guide 2026.
Training Block 3: Cyber Defense
Cyber Defense is the most vocabulary-heavy domain. It covers threats, vulnerabilities, and exploits; malware types and prevention; network attacks; and internal attacks.
Domain 3: Cyber Defense
Train by matching an attack description to its name and then to a defense.
- Threats, vulnerabilities, and exploits: keep these three terms distinct. A vulnerability is a weakness, a threat is something that could take advantage of it, and an exploit is the means of doing so.
- Malware types: be able to distinguish Trojan, worm, and rootkit by how each spreads, hides, or persists, and know the prevention approaches for each.
- Network attacks: cross-site scripting, DDoS, and botnets are named in the topics. Understand what each targets and what it requires to succeed.
- Internal attacks: BIOS and UEFI concerns and data loss prevention (DLP) belong here; think about threats that originate below the operating system or from inside the organization.
Turn Definitions Into Scenarios
Rewrite each malware and attack term as a short symptom statement, such as "spreads across a network without user action" or "a swarm of compromised machines used to flood a target." Then practice working backwards from the symptom to the term. That mirrors how scenario questions are phrased and is faster than rereading definitions.
Training Block 4: Documentation
Documentation is the domain candidates most often underestimate, because it feels less technical. It covers change management, incident response plans, software licenses, and data policy, privacy, and protection. These topics reward careful reading rather than technical depth.
Domain 4: Documentation
Think like someone running a security program, not just configuring a firewall.
- Change management: understand why changes to systems are reviewed, approved, and recorded, and how this reduces risk.
- Incident response plans: know the purpose of having a plan before an incident occurs and the kinds of steps such a plan lays out.
- Software licenses: be able to recognize licensing categories and the obligations or restrictions that come with them.
- Data policy, privacy, and protection: understand how organizations define acceptable handling of sensitive information.
A good training habit here is to read each topic as a process question: who does what, in what order, and why. That framing is also useful if you later work in an operations role, which ties into the paths covered in CHS-CY2 Jobs.
Training Block 5: Risk Management
Risk Management closes out the exam content and ties the technical domains together. The topics are types of vulnerabilities, risk assessment, risk response, and penetration testing.
Domain 5: Risk Management
Learn the vocabulary of how organizations decide what to do about risk.
- Types of vulnerabilities: be able to categorize weaknesses and recognize them in a described environment.
- Risk assessment: understand how likelihood and impact are weighed to decide which risks matter most.
- Risk response: know that organizations can choose among different ways to handle a risk and recognize which approach a scenario describes.
- Penetration testing: understand its purpose, that it is an authorized simulated attack used to find weaknesses, and how it differs from a routine vulnerability scan.
Key Takeaway
Risk Management questions often hinge on word choice. Practice reading each answer option for what the organization is actually doing about the risk, not just for whether the option sounds responsible.
Scheduling the Five Domains
CodeHS does not weight the domains, so a balanced schedule that front-loads the heaviest topic count is a sensible approach. Here is one way to sequence a five-week plan tied to the content above. Adjust it to your own pace and to how far you are into the Advanced Cybersecurity course.
Advanced Cryptography
- Build comparison pairs for symmetric/asymmetric, block/transposition, and hashing
- Work through public key and digital certificate concepts
Advanced Networking, Part 1
- IDS, IPS, UTM, access control, and ports and protocols
- Private network tools: DMZ, VPN, MAC filtering
Advanced Networking, Part 2 and Cyber Defense
- Physical security, environmental controls, wireless, and mobile devices
- Malware types and network attacks, matched to defenses
Documentation and Risk Management
- Change management, incident response plans, licenses, data policy
- Risk assessment, risk response, and penetration testing
Timed Review
- Full-length timed practice sets of 45 questions in 90 minutes
- Revisit the domains where your practice results are weakest
Networking gets two weeks because it has the most listed topics. If you want a compact reference during review, the CHS-CY2 Cheat Sheet 2026: One-Page Review of Must-Know Facts is built for that final pass.
Training With Practice Questions
Reading about a domain and answering questions about it are different skills, and the exam only tests the second. Because the exam is multiple choice, the most valuable training habit is to answer questions, then study why each wrong option was wrong. That is especially true for CHS-CY2, where many options are drawn from closely related concepts such as IDS versus IPS or worm versus Trojan.
Use our CHS-CY2 practice tests to rehearse the format: 45 questions, a 90-minute limit, and a 60% target. Start with untimed sets organized by domain so you can find weak spots, then move to full timed runs in your last week. After each set, log which domain each missed question came from. Patterns will show up quickly, and they are more reliable than a general feeling of readiness.
After Training: Vouchers, Retakes, and Career Use
How Attempts Work
Each exam attempt requires a voucher, and each voucher code is valid for one attempt. If you need another try, you can retake the exam using a new voucher; there is no stated limit on retakes in the official material. Details on pricing and how vouchers are obtained are covered in CHS-CY2 Certification Cost 2026: Complete Pricing Breakdown. Eligibility is straightforward since CodeHS lists no specific prerequisites; see CHS-CY2 Requirements 2026 for the full picture.
How Long the Credential Lasts
Certifications earned through CodeHS expire after 10 years, which is a long window relative to many industry credentials. That makes the training investment durable, though the underlying technology will keep changing over that period.
Where the Training Pays Off
The domains you have trained on map onto foundational entry-level security work: understanding network defenses, recognizing attack types, following documented procedures, and participating in risk conversations. Treat the credential as evidence of foundational knowledge rather than a substitute for experience. For an honest look at return on effort, read Is the CHS-CY2 Certification Worth It? Complete ROI Analysis 2026, and for earnings context see the CHS-CY2 Salary Guide 2026.
Frequently Asked Questions
It covers the five official exam domains: Advanced Cryptography, Advanced Networking, Cyber Defense, Documentation, and Risk Management. CodeHS recommends its Advanced Cybersecurity course as preparation, though the exam topics are distinct from that course's curriculum.
No. CodeHS lists no specific prerequisites for the Level 2 exam. The Advanced Cybersecurity course is recommended, not required, so you can prepare through other study as long as you cover the published exam topics.
The exam is online and timed, with 45 multiple-choice questions and a 90-minute timer. The passing score is 60%.
Yes. Each voucher code is valid for a single attempt, so a retake requires a new voucher. Students can retake the exam as needed using new vouchers.
Level 1 content should not replace Level 2 preparation. The Level 2 exam topics are distinct, so train on the five Level 2 domains listed above rather than relying on earlier-level material.