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JAC Board 12th Important Subjective Questions :– Q1. Write a note on Fibre Optics Cable. Q2. What do you understand by Modem? Q3. Write the mode of transmission. Q4. Define ‘Band’. Q5. Write abbreviation of: (a) O.S.I. (b) I.S.O Q6. What is the difference between LAN and WAN? Q7. What are the components required for networking? Q8. Give the full form of the following: WATS, URL, HTTP & www Q9. What do you mean by topology? What are the most popular topology? Q10. What are the various physical media used for data transmission in a network system ? Q11. Write two advantage and disadvantage of star topology. Q12. What is a server? What is its role? Q13. Define the term Bandwidth. Give unit of Bandwidth. Q14. What is the purpose of using a MODEM? Q15. Give the advantages of email and World Wide Web services provided by INTERNET. Q16. Why do we need to network our system? Q17. Write the two advantages and disadvantages of the following topologies in network. (a) BUS (b) TREE Q18. What is world wide web and what are its advantages? Q19. What are the facilities provided by this server in a network environment? Q20. Explain in brief the networking needs and goals.

JAC Board 12th Computer Science Important Question Answer 2025 Multiple Choice Questions :- 1. C++ is developed by (a) Dennis Ritchie (b) Ken Thompson (c) Martin Richard (d) Bjarne Stroustrup 🎯 2. String Terminator character is (a) '\o' 🎯 (b) '\n' (c) '\b' (d) None Of These 3. DBMS stands for (a) Database Management System 🎯 (b) Database Manual System (c) Define Management Solution (d) None of These 4. The smallest individual unit in (a) Semicolon (b) Data Type (c) Token 🎯 (d) Keyword 5. The process of finding the location of the particular element in the array is called. (a) Traversal (b) Searching 🎯 (c) Sorting (d) None of These 6. The Boolean expression A•(B+C)=AB+AC is (a) Associative law (b) Commutative law (c) Absorption law (d) Distributive law 🎯 7. Destructor name is preceded by (a) ! (b) $ (c) # (d) ~ 🎯 8. The term 'attribute' refers to a (a) Table (b) Row (c) Column (d) Relation 🎯 9. Main is a/an (a) Object (b) Function 🎯 (c) Literal (d) None of These 10. F stream class is used for (a) Input operation (b) Output operation (c) Input/Output operation 🎯 (d) None of These 11. A set of logical operators is (a) + - * / % (b) ? : (c) > < >= <= (d) None of These 🎯 12. Pointer is a (a) variable that holds address of other variable (b) Pointer name is preceded by * (c) Void pointer is a pointer which can hold the address of any data type (d) All of these 🎯 13. STACK follows (a) GIGO Technique (b) FIFO Technique (c) LIFO Technique 🎯 (d) None of These 14. When several classes inherit the properties of same common class it is called. (a) Single inheritance (b) Multiple inheritance (c) Hierarchical inheritance 🎯 (d) None of These 15. People standing in a line is an example of (a) STACK (b) QUEUE 🎯 (c) ARRAY (d) Linked list 16. _____ is a Browser (a) C++ (b) Telnet (c) Firefox 🎯 (d) Cookies 17. Main is a/an (a) Object (b) Function 🎯 (c) Literal (d) None of These 18. Destructor has the same name as the constructor and it is preceded by (a) ! (b) $ (c) # (d) ~ 🎯 19. A set of logical operators is (a) + - * / % (b) ? : (c) > < >= <= (d) &&, ||, ! 🎯 20. Which of the following is not a feature of C++? (a) Operator overloading (b) Inheritance (c) Namespace (d) Reflection 🎯

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