CIW Cheat Sheet 2026

The 30 highest-yield CIW facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. In internet marketing, what is a conversion rate? → The percentage of website visitors who complete a desired action
2. Which file format is best suited for photographic images on the web due to its lossy compression? → JPEG
3. What is SQL injection? → An attack that inserts malicious SQL code into input fields to manipulate a database
4. Which CSS3 property is used to add rounded corners to an element's border box? → border-radius
5. Which principle of web design states that related elements should be grouped together visually? → Proximity
6. Which of the following methods will aid in safeguarding your computer from malware attacks? → Update the definitions for your malware protection application frequently
7. What is the purpose of a shopping cart on an e-commerce website? → Allow customers to select and temporarily hold items before purchasing
8. Which SQL clause is used to filter groups after a GROUP BY operation? → HAVING
9. Which CSS property controls the space between the content and the border of an element? → padding
10. Which HTML5 semantic element is most appropriate for the main navigation links of a website? →
11. What does a 404 HTTP status code mean? → The requested resource was not found on the server
12. What is the CAN-SPAM Act designed to regulate? → Commercial email messages sent to consumers
13. Which SQL statement is used to retrieve data from a database? → SELECT
14. The information 2E22:4F00:000E:00D0:A267:97FF:FE6B:FE34 is referenced by which of the following? → An IPv6 address
15. Which CSS property is used to control the transparency of an element? → opacity
16. What class of intellectual property comprises company strategies, confidential software, and sales agreements? → Trade secret
17. What type of attack involves an attacker intercepting communication between two parties without their knowledge? → Man-in-the-Middle (MitM)
18. In database design, what is denormalization? → Intentionally introducing redundancy to improve read performance
19. What is the primary function of a Content Management System (CMS) in web design? → Allow non-technical users to create and manage website content without coding
20. What is a payment gateway in e-commerce? → A service that authorizes and processes online credit/debit card transactions
21. Digital signatures confirm the sender's identity, the accuracy of the contents, and → Enforce non-repudiation
22. What is a firewall primarily used for in network security? → Monitor and control incoming and outgoing network traffic based on security rules
23. What is the primary purpose of a privacy policy on a website? → Inform users how their personal data is collected, used, and protected
24. What is the principle of least privilege in security? → Grant users only the minimum permissions necessary to perform their job functions
25. What does the HTML `` element semantically represent? → Self-contained content such as an image, diagram, or code snippet
26. Which type of SQL JOIN returns only rows where there is a match in both tables? → INNER JOIN
27. Which of the following is required to build a WAN? → A router
28. Which HTML5 element represents a self-contained composition that could be independently distributed, such as a blog post? →
29. Which CSS display value causes an element to start on a new line and stretch the full available width? → block
30. What does the HTML `alt` attribute on an `` tag primarily provide? → Alternative text for accessibility and SEO