JAC Class 12 Computer Science Question Paper 2018 with Solution

About this paper

This is the Jharkhand Academic Council (JAC) Class 12 Computer Science paper from the 2018 board examination, with answers written in. Section A has 16 multiple-choice parts on main, destructors, logical operators, constructors, sorting, postfix conversion, databases and the OSI model. Section B, questions 2 to 10, compares object-oriented and procedural programming, evaluates expressions, lists operations on a linear data structure, counts nodes in a linked list and asks what a repeater is. Section C, questions 11 to 21, includes inheritance, an electricity-bill program at Rs. 2, Rs. 3 and Rs. 4 per unit plus Rs. 50, a postfix stack trace, Merge sort, SQL on a SPORTS table and reasons for networking. The truth table in Question 9 is handwritten. Marks and time are not printed.

Exam

JAC Class 12

Subject

Computer Science

Year

2018

Questions

21

Pages

4

Answers included

Yes

Paper pattern

• Section A

  Question 1 with 16 multiple-choice parts

• Section B

  Questions 2–10, very short answers

• Section C

  Questions 11–21, long answers including a bill program, Merge sort, SQL and a K-map

Topics covered

• C++ features, constructors and destructors
• Object-oriented and procedural programming
• Inheritance
• Linear data structures and linked lists
• Infix, postfix and stacks
• Merge sort
• Databases and SQL
• Boolean algebra and K-maps
• Repeaters and the OSI model
• Need for networking

Questions from this paper

1. Write two major differences between object-oriented programming and procedural programming.
2. What is the difference between a keyword and an identifier?
3. List four important operations associated with a linear data structure.
4. Write an algorithm to count the total number of nodes in a linked list.
5. An electricity board charges Rs. 2 per unit for the first 100 units, Rs. 3 per unit for the next 200 and Rs. 4 per unit beyond 300, plus a meter charge of Rs. 50. Write a C++ program to read the units consumed and print the charges.
6. What are the advantages offered by inheritance?