ICT Cheat Sheet 2026

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

1. A company wants to allow employees to use personal phones for work while keeping corporate data in an isolated container. What solution achieves this? → BYOD with containerization (e.g., Samsung Knox)
2. Which netiquette rule is most important to follow when participating in a professional online discussion forum? → Stay on topic and keep posts relevant to the discussion thread
3. What distinguishes a microkernel architecture from a monolithic kernel? → Microkernels keep only essential functions in kernel space and run services in user space
4. Which of the following is an example of biometric authentication? → Scanning a fingerprint
5. Which type of database backup copies only the data that has changed since the last full backup? → Incremental backup
6. Which cloud networking component acts as a virtual firewall controlling inbound and outbound traffic at the instance level? → Security Group
7. Which of the following is an example of volatile memory? → RAM
8. What is the role of DNS in internet communication? → Translates domain names to IP addresses
9. Which type of malware encrypts a victim's files and demands payment for the decryption key? → Ransomware
10. What is the maximum theoretical data transfer speed of USB 3.2 Gen 2x2? → 20 Gbps
11. Which of these operating systems is free? → Ubuntu
12. Port 443 is associated with which protocol? → HTTPS
13. What distinguishes a 'hybrid drive' (SSHD) from a standard HDD? → It combines a magnetic disk with a small NAND flash cache for frequently accessed data
14. In database design, what is an entity? → A real-world object or concept represented in the database
15. Which protocol operates at the OSI Network layer and is responsible for logical addressing and routing? → IP
16. Which protocol provides encrypted communication for secure web browsing? → HTTPS
17. Which addressing scheme does IPv6 use? → 128-bit hexadecimal addresses
18. What does 'presence status' refer to in collaboration platforms like Slack or Teams? → An indicator showing whether a user is online, away, or busy
19. What is the primary function of a public key infrastructure (PKI)? → To manage digital certificates and public/private key pairs for secure communications
20. Which of the following is an example of volatile memory, meaning its contents are lost when the computer powers off? → Random Access Memory (RAM)
21. What is a 'virtual whiteboard' tool such as Miro or MURAL primarily used for in remote collaboration? → Brainstorming, diagramming, and visual collaboration in real time
22. A smart home hub uses Z-Wave to control devices. What frequency band does Z-Wave primarily operate on in the US? → 908.42 MHz
23. What is the primary purpose of CSS in web development? → To control the presentation and styling of web pages
24. What does HTML stand for? → Hypertext Markup Language
25. A technician needs to remotely access a Windows computer to troubleshoot it. Which built-in Windows feature enables this? → Remote Desktop Protocol (RDP)
26. In containerization, what does a container image contain? → Application code, runtime, libraries, and configuration bundled together
27. Which of the following best describes a 'semaphore' in OS context? → A synchronization variable used to control access to shared resources
28. Which of the following is an example of an output device? → Monitor
29. What does 'refactoring' mean in software development? → Restructuring existing code without changing its external behavior
30. Which condition is NOT required for deadlock to occur? → Preemption