What Is Online Testing and How Does It Work?

Online testing is the delivery of assessments over the internet so that a person can be evaluated, scored, and given results without being in the same room as the examiner. It covers two related but different things: skill and aptitude tests (used to measure what someone can do, often before hiring or during employee development) and certification exams (used to formally recognize that knowledge). On ExpertRating, for example, the same platform hosts pre-employment testing, employee testing, and individual certification across 1,100+ skill tests and 300+ certifications, with the company reporting more than 3 million certification tests and courses delivered annually. This article explains how a typical online test runs, what it is used for, and how to choose and prepare for one.

Online testing vs. certification: what's the difference?

Both are delivered online and both produce a score, but they serve different decisions.

Aptitude tests (reasoning, numerical, verbal) and personality tests are usually screening instruments, while a certification exam is something you opt into to prove expertise. ExpertRating positions its certifications as a way for professionals, job seekers, and freelancers to validate expertise and improve job prospects.

How a typical online test works

The flow is broadly the same across providers, though exact screens and menu names vary. Treat the steps below as the general pattern, not a walkthrough of one specific site.

1. Registration and account setup. You create an account and, for employer-run tests, receive an invitation or access link. For individual certification, you select the test or certification from the catalog and register for it.
2. Test launch and instructions. Before questions begin you typically see the rules: number of questions, time limit, whether you can go back, and what happens if you disconnect.
3. Taking the timed test. Questions are delivered one at a time or in sections. Most scored tests are timed; the timer is the main constraint to plan around.
4. Submission and scoring. Objective questions (multiple choice, true/false) are scored automatically, so results usually appear immediately or shortly after submission.
5. Results and next steps. You receive a score or pass/fail outcome. For certification, a passing result leads to the credential; for pre-employment testing, the result goes to the requesting employer.

Expected result at each stage: an account that can access the test, a completed attempt within the time limit, and a score report you or the employer can act on.

What online testing is used for

• Pre-employment screening. Employers give candidates skill or aptitude tests to compare them on the same measure before interviewing.
• Employee testing. Existing staff are assessed for training needs, internal moves, or role fit. ExpertRating lists corporate employee testing as a core use and says 6,500+ companies use the platform.
• Individual certification. A person takes an exam to earn a credential that signals competence to employers. ExpertRating says its certifications are developed under ISO 9001:2015 standards and accepted by employers and organizations worldwide, and names companies such as Walmart, Google, IKEA, Ericsson, GAP, and Amazon as platform users.

How to choose an online test or certification

Compare options on the same dimensions rather than on marketing claims:

• Validity and relevance. Does the test actually measure the skill the role or credential requires? Check the test's stated scope against the job or skill area.
• Accreditation and standards. Look for a stated quality standard. ExpertRating cites ISO 9001:2015 for its certifications; verify any provider's claims independently.
• Employer acceptance. Ask whether the specific employers you care about recognize the credential. Broad claims of "globally accepted" are a starting point, not proof for your target industry.
• Cost. Pricing is not stated in the available material, so confirm fees on the provider's site before committing; do not assume free access.
• Format fit. Check time limits, question types, and whether the test is proctored or open-book, since these affect how you prepare.

Conditional choice: if you need a screening signal for hiring, prioritize validity and comparability across candidates. If you want a personal credential, prioritize employer recognition in your field and the accreditation behind it.

Preparing for and taking a test remotely

• Confirm the logistics first. Know the time limit, whether you can revisit questions, and what the provider requires for login or identity checks.
• Test your setup before the clock starts. A stable connection and a working browser matter more than any study trick; a dropped connection mid-test is the most common avoidable problem.
• Practice the format. If sample questions are offered, use them to get used to pacing rather than to memorize content.
• Read the rules on disconnection. Providers differ on whether time keeps running or the attempt is paused; know this before you begin.
• Plan for the result. For certification, check how long a pass is valid and how the credential is issued; for pre-employment tests, understand that the score goes to the employer, not just to you.

If a test is timed and auto-scored, the practical goal is simple: complete every section within the limit and submit before the timer expires, since unanswered questions usually score as incorrect.