Exercises
Test your knowledge with multiple-choice quizzes that explain every answer. Filter by category, subcategory or topic, or search by title.
Test your knowledge of artificial intelligence in business applications, from customer service and analytics to ethics, automation, and HR.
Start exercisesTest intermediate Power BI skills in Power Query, DAX, data modeling, visuals, slicers, bookmarks, publishing, and Q&A.
Start exercisesTest your Introduction to Data Visualization knowledge, from charts and dashboards to heat maps, scatter plots, trends, and data storytelling.
Start exercisesTest your knowledge of cyber security risk management, including risk assessment, CIA, risk appetite, impact, residual risk, and frameworks.
Start exercisesTest your cybersecurity expertise with an advanced malware analysis quiz covering sandboxes, IOCs, hashes, reverse engineering, and detection.
Start exercisesTest your knowledge of data protection and security measures, including encryption, MFA, access controls, backups, phishing, and audits.
Start exercisesTest your information security awareness with questions on firewalls, phishing, malware, HTTPS, passwords, wireless security, and digital certificates.
Start exercisesTest your web application security knowledge with questions on SQL injection, XSS, CSRF, HTTPS, secure cookies, and input validation.
Start exercisesTest your computer and notebook software troubleshooting skills, from malware prevention and system repairs to startup issues and updates.
Start exercisesTest your knowledge of computer power systems, including PSUs, laptop batteries, USB charging, inverters, surge protection, and UPS devices.
Start exercisesTest your knowledge of computer and notebook cooling system maintenance, including fans, heat sinks, thermal paste, dust cleaning, and temperature monitoring.
Start exercisesTest your hardware diagnostics and troubleshooting skills, including hard drive testing, overheating, blank screens, RAM checks, and data backup.
Start exercisesTest your Python programming fundamentals with questions on syntax, variables, lists, loops, functions, strings, tuples, and operators.
Start exercisesTest your knowledge of basic algorithms, problem-solving techniques, time complexity, recursion, dynamic programming, and graph paths.
Start exercisesTest your knowledge of programming control structures, loops, conditionals, break, continue, for, while, and do-while statements.
Start exercisesTest your understanding of object-oriented programming basics, including classes, objects, encapsulation, inheritance, polymorphism, interfaces, and constructors.
Start exercisesTest your backend data validation skills: input validation, schemas, SQL injection prevention, secure APIs, frameworks, and HTTP error handling.
Start exercisesTest your knowledge of backend middleware functions, Express.js, request handling, logging, body parsing, CORS, and the next() callback.
Start exercisesTest your advanced REST API development knowledge, including HTTP methods, status codes, REST constraints, HATEOAS, CORS, URIs, and testing tools.
Start exercisesTest your knowledge of web servers, HTTP, HTTPS, Nginx, proxies, load balancers, modules, and backend development fundamentals.
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Free CourseWeb Development for beginners
4.7
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30 exercises
Free CourseAndroid for beginners
4.9
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Free CourseCyber security
4.8
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Free CourseExcel basic to advanced
4.8
(241)
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Free CourseSoftware testing for begginers
4.7
(214)
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Free CoursePython
4.6
(222)
6h13m
48 exercises
Free Course30 Days to Learn HTML and CSS
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(202)
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20 exercises
Free CourseJava for beginners
4.8
(183)
26h50m
49 exercises
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