JAC Class 12 Computer Science Question Paper 2013 with Solution

About this paper

This is the Jharkhand Academic Council (JAC) Class 12 Computer Science paper from the 2013 board examination, with an answer under the questions. Group A has 16 multiple-choice parts, from who developed C++ and what a constructor is to SQL, minterms, the commutative law and the meaning of WLL. Group B, questions 2 to 10, covers pointers, header files, copy constructors, infix and postfix notation, the base address of an array, relations and Boolean equations, with an alternative on most of them. Group C, questions 11 to 19, asks about get and getline, data hiding, the this pointer, bubble sort, levels of data abstraction and a proof that X + XY = X + Y. Marks and time are not printed.

Exam

JAC Class 12

Subject

Computer Science

Year

2013

Questions

19

Pages

5

Answers included

Yes

Paper pattern

• Group A

  Question 1 with 16 multiple-choice parts

• Group B

  Questions 2–10, very short answers, most with an Or alternative

• Group C

  Questions 11–19, programs, class concepts, sorting, Boolean algebra and networking

Topics covered

• C++ operators and control statements
• Pointers and header files
• Constructors and inheritance
• Infix and postfix expressions
• Arrays and linked lists
• Sorting and searching
• Database relations, keys and SQL
• Boolean algebra
• Object-oriented programming
• Networks, LAN and MAN

Questions from this paper

1. How does a pointer variable differ from a simple variable?
2. What do you mean by a copy constructor?
3. Distinguish between infix and postfix expressions, with an example of each.
4. What is a relation? What is the difference between a tuple and an attribute?
5. What is the difference between the get() and getline() functions?
6. How does a class enforce data hiding and encapsulation?