Frequently asked questions

Published courses are free. Register, sign in and add a course to your learning. You do not need a payment card to access the material.

Guests can browse lesson and topic titles. Signing in and adding a course unlocks explanations, exercises, quizzes and learning files, with progress saved to your account.

Start with the main QA course and follow its programme. First understand the requirement and expected result, then reproduce the example and attempt the independent exercise. Use that foundation for the specialist courses.

Open registration and enter your first name, last name, email and a password of at least eight characters. If the email is already registered, use sign-in. Keep your learning in one account.

Use the save-position control inside the material. Your account lets you resume from the last saved place. Check your quiz result before moving on to the next material.

Read each prompt and select every required answer: some questions have multiple correct choices. After submission, you can see the result and available explanations. Each quiz sets its own passing score.

Yes. Repeat practice is available in the result section. Read the explanations, revisit the related lectures and try again without looking at the answers. Aim to explain the decision rather than memorise an answer position.

Yes. Ukrainian and English are available through the switcher at the top of the page. Use the same account: switching languages does not create a separate learner.

Sign in, open the relevant material and find its laboratory files and figures section. Several lectures may link to the same laboratory. Start with the README in your chosen language inside the archive.

Reproduce the baseline example, write down the expectation, change one condition and compare results. Keep the input data, run command and conclusion. For a deliberate fault, explain which check detected it.

Laboratory scenarios target your own local environment. Keep the supplied load limits and start with one user. Testing another person’s or a production system requires a separately agreed target, boundaries and permission.

Compare versions, data, resources and run settings. Exact performance timings depend on the environment. Check behaviour, errors and repeatability rather than adjusting the experiment to match a picture.

You need independent practice: design checks, explain risks, collect evidence and defend conclusions. Complete the capstone projects against their rubrics. A completion percentage alone does not demonstrate professional competence.

Select “Suggest an improvement” inside the material. Its context is attached automatically. Choose a reason, describe the issue and suggest a concrete example or the explanation you expected.

Open “My suggestions” in your account to see its status and any response. Suggestions are not published to other learners. “Planned” does not mean a delivery date has been set.

Include the title or relevant explanation, your current understanding, the specific difficulty and the addition you want. For example: “I cannot distinguish p95 from the mean; please calculate both for ten requests.” Do not include secrets.

The contact page has a message form for your name, email, subject and description. Use it for website questions or sign-in difficulties. A separate callback form is also available.

Use the password-recovery page. If it reports that recovery is unavailable, send a contact message. Never send anyone your password, access code or password-reset link.

Open account deletion from your account and read its stated consequences. Verify your identity and confirm the action. Learning records and account-linked suggestions are removed; this action is different from signing out.

The site map links to the main pages, published course programmes and help sections. It is linked from every page’s footer. Open private material through your course after signing in.