JAC Class 12 Computer Science Question Paper 2019 with Solution

About this paper

This is the Jharkhand Academic Council (JAC) Class 12 Computer Science paper from the 2019 board examination, with answers under the questions. Section A is a block of multiple-choice items on the conditional operator, strlen, array indexing, constructors, Boolean laws and network topology. Section B, questions 2 to 10, distinguishes characters from strings, gives a queue-insertion algorithm, asks for the role of a database administrator and defines topology. Section C, questions 11 to 21, covers data hiding, constructors and destructors, the postfix expression 300, 10, 30, +, 20, *, +, insertion sort, SQL on a hospital M_C_DEPT table, a K-map and the terms node, network, client and server. Marks and time are not printed.

Exam

JAC Class 12

Subject

Computer Science

Year

2019

Questions

21

Pages

4

Answers included

Yes

Paper pattern

• Section A

  Question 1, multiple-choice items on C++, data structures, Boolean algebra and networks

• Section B

  Questions 2–10, very short answers

• Section C

  Questions 11–21, long answers: classes, postfix evaluation, insertion sort, SQL, a K-map and networking terms

Topics covered

• C++ operators, strings and arrays
• Loops and conditional operators
• Constructors and destructors
• Data hiding
• Queues and linked lists
• Stacks and postfix evaluation
• Insertion sort
• Database administration and SQL
• Boolean algebra and K-maps
• Network topology, nodes and servers

Questions from this paper

1. What is the difference between a character and a string in C++?
2. Write an algorithm to insert an element in a queue.
3. What is the role of a database administrator?
4. What is network topology?
5. Evaluate the postfix expression 300, 10, 30, +, 20, *, + using a stack.
6. Write an algorithm for insertion sort.