JAC 12th Computer Science Important Question 2022

JAC 12th Computer Science Important Question 2021-22: Jharkhand Academic Council Class 12th Computer Science Important Question 2022. Here we have given NCERT Important Questions For Class 12 Computer Science.

JAC 12th Computer Science Important Question 2022


  1. Write two advantages and disadvantages of networks.
  2. What do you understand by InterSpace?
  3. What is circuit switching and Message switching?
  4. Define Twisted Pair cable and Co-axial Cable?
  5. Difference between LAN and WAN
  6. What is Topology?
  7. Define BUS, STAR and Ring Topology?
  8. Give two advantages and two disadvantages of following network topologies :
    (i)Star (ii)Tree
  9. What is the modem? Name two categories of modems.
  10. Define the following :
    (i)RJ-45 (ii)Ethernet (iii) Ethernet card (iv)hub (v)Switch
  11. Define Protocol, Repeaters, Router, Bridge
  12. What is the Internet? What is E-mail?
  13. What is the URL? What is WWW?
  14. Full Form of :
    (i) HTTP: Hyper Text Transfer Protocol
    (ii) FTP: File Transfer Protocol
    (iii) SLIP: Serial Line Internet Protocol
    (iv) PPP: Point to Point Protocol
    (v) TCP/IP: Transmission Control Protocol/ Internet Protocol
    (vi) NTP: Network Time Protocol
    (vii) SMTP: Simple Mail Transfer Protocol
    (viii) POP: Post Office Protocol
    (ix) IMAP: Internet Mail Access Protocol
  15. What is TCP/IP?
  16. What is hacking?
  17. What is cracking? How is it different from hacking?
  18. What is Cyber Crime?
  19. What is wireless computing? How is it different from mobile computing?
  20. Full-Form of : (i) GSM (ii) CDMA (iii) WLL (iv) 3G (v) SMS (vi) EDGE (vii) UMTS


  1. What is a binary decision?
  2. What do you mean by tautology and fallacy?
  3. What is a logic gate? Name the three basic logic gates.
  4. What is the other name of NOT gate?
  5. What is the truth table? What is the other name of the truth table?
  6. What is the Principle of Duality?
  7. What are Minterms and Maxterms?
  8. Why are NAND and NOR gates called Universal gates?
  9. Prove the complementarity law of Boolean algebra with the help of a truth table.
  10. Prove x + x’y = x + y algebraically.
  11. Reduce the following Boolean expression using K-map : F(A, B, C, D) = Π(5, 6, 7, 8, 9, 12, 13, 14, 15) ‘
  12. Obtain a simplified form for a Boolean expression : F(X, Y, Z, W) = Σ(0, 1, 4, 5, 7, 8, 9, 12, 13, 15) using K-map method.

DATABASE MANAGEMENT SYSTEM – 4 MARKS                            

  1. What is data redundancy? What are the problems associated with it?
  2. How does database management systems ensure data security and privacy?
  3. What are the three levels of data abstraction?
  4. What do you understand by data independence?
  5. Name the different data models available for the database system. Which of them is the most preferred one?
  6. Define the following terms : (a) Relation (b) Tuple (c) Attribute (d) Domain (e) Primary key (f) Candidate key (h) degree
  7. What do you mean by a relational database?
  8. What is an Alternate Key?
  9. What is the function of a select and project operation?
  10. What does union operation do?
  11. What is meant by functional dependency? Give an example of functional dependence.
  12. Define 3 levels of Data Abstraction?
  13. What is Data Independence? Define various types?
  14. Define 3 levels of Data Abstraction?
  15. What is Relational Data Model?


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