DL Cheat Sheet 2026

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

1. What is the recommended action when you receive a suspicious link in a text message from an unknown number? → Do not click the link; delete the message and block the number
2. Which Excel feature allows you to quickly summarize and analyze large datasets by dragging fields into rows, columns, and values? → PivotTable
3. A student copies text from Wikipedia directly into their essay. What ethical issue does this create? → It constitutes plagiarism and violates academic integrity
4. When organizing files on a computer, which practice is considered a good habit? → Using clear, descriptive file names and folder structures
5. A developer uses `git rebase` instead of `git merge`. What is the key practical difference? → Rebase creates a linear commit history by replaying commits
6. What type of attack floods a server with traffic to make it unavailable to legitimate users? → Distributed Denial-of-Service (DDoS)
7. What role does continuing education play in Digital Communication? → Keeping practitioners current with evolving best practices and new developments
8. What is the significance of documentation in Internet and Email? → It provides a record for accountability, quality assurance, and legal compliance
9. What is 'social engineering' in the context of cybersecurity? → Manipulating people psychologically to divulge confidential information or perform actions
10. When working with large datasets in Python, which library is specifically optimized for high-performance data manipulation and analysis? → Pandas
11. Which of the following is a sign that a website may not be trustworthy? → It has an excessive number of pop-up ads and no author information
12. Under the Children's Online Privacy Protection Act (COPPA), websites must obtain parental consent before collecting data from children under: → 13 years old
13. What is the role of an algorithm in social media platforms in relation to digital media literacy? → It curates and filters the content users see, potentially creating echo chambers
14. What is the most important foundational concept in Digital Communication? → Understanding core principles and their practical application in Digital Communication
15. A company wants to automate repetitive data entry tasks across multiple web forms. Which advanced technique is most appropriate? → Robotic Process Automation (RPA)
16. What is the most important foundational concept in Online Safety? → Understanding core principles and their practical application in Online Safety
17. Which of the following is an example of a hybrid cloud? → Combining private on-premises infrastructure with public cloud services
18. What is 'doxxing' and why is it considered unethical? → Publicly sharing someone's private personal information without consent
19. What is the most important foundational concept in Computer Fundamentals? → Understanding core principles and their practical application in Computer Fundamentals
20. In a spreadsheet, what does the SUM function do? → Adds together the values in a specified range of cells
21. What is the purpose of a file backup? → To create a copy of data to restore in case of loss or damage
22. What is 'patch management' and why is it important? → Regularly applying software updates to fix security vulnerabilities
23. What does 'bandwidth' refer to in the context of internet connections? → The maximum data transfer rate of a connection
24. Which of the following best describes 'phishing'? → A fraudulent attempt to obtain sensitive information by disguising as a trustworthy entity
25. What is the significance of documentation in Computer Fundamentals? → It provides a record for accountability, quality assurance, and legal compliance
26. A product manager wants to test whether a new website button color increases click-through rates. Which advanced testing methodology should be used? → A/B testing with statistical significance analysis
27. Which of the following is considered cyberbullying? → Repeatedly sending threatening messages to someone online
28. What does 'least privilege' mean in cybersecurity? → Giving users the minimum access rights needed to perform their job
29. Which of the following is a sign of misinformation? → The headline is sensational and lacks supporting evidence
30. Which practice BEST demonstrates responsible digital citizenship when engaging in online debates? → Using evidence-based arguments and respectful tone