BSCS Cheat Sheet 2026

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

1. What components are encompassed within the DBMS subsystem? → All of the above
2. When is it necessary for a computer to possess an IP address? → Connecting to a Wi-Fi hotspot
3. What is another term that can refer to a home computer network → LAN
4. Networks facilitate the sharing of files among computers. → TRUE
5. both a) and b) are always true When a separate-chaining hash table possesses a load factor λ of 5, what value does the average chain length assume? → 5
6. What is the difference between a permutation and a combination? → Permutations count ordered arrangements; combinations count unordered selections
7. What is the purpose of the program counter (PC) register? → Holds the memory address of the next instruction
8. What does IEEE 754 define? → Floating-point arithmetic and number representation
9. A network forms when a single device is linked to another. → FALSE
10. What are the drawbacks of networks? → Viruses
11. Which division of machine learning draws inspiration from the intricate network of neurons in the human brain? → Deep Learning
12. What capability does the operating system offer as a platform? → Applications
13. In the context of AI, what is the main emphasis of Cognitive Science? → Studying the human mind using AI techniques
14. Which design pattern ensures only one instance of a class exists? → Singleton
15. What is the tiniest, fundamental element that constitutes the foundation of almost all computer graphics? → Pixels
16. What is the von Neumann bottleneck? → The shared bus between CPU and memory limits throughput
17. What is a predicate in predicate logic? → A function that takes arguments and returns a truth value
18. The act of rebooting a computer or mobile device while it is still powered on. → Warm boot
19. What is the purpose of connecting computers into a network? → So they can share files and resources.
20. What is a closure in programming? → A function that captures variables from its enclosing scope
21. Which protocol allows two parties to establish a shared cryptographic secret over an insecure channel without transmitting the secret itself? → Diffie-Hellman key exchange
22. Which of the following is not a role performed by an operating system? → Checking for viruses
23. Within the domain of artificial intelligence, what is encompassed by the term "sentiment analysis"? → Analyzing emotional tone in text
24. What is type inference in programming languages? → The compiler automatically deduces the type of an expression
25. What is lexeme in the context of lexical analysis? → The actual sequence of characters in the source that matches a token pattern
26. Among the options listed, which one does NOT fall under the category of advantages associated with a DBMS? → Increase data isolation
27. Which hashing algorithm produces a 256-bit digest and is widely used in TLS, digital signatures, and blockchain applications? → SHA-256
28. Which field of technology seizes the public's imagination the strongest owing to its limitless potentials? → Artificial Intelligence
29. What does BNF (Backus-Naur Form) represent? → A notation for expressing context-free grammars
30. What does the DBMS catalog hold information about, which is the description of the database? → Metadata