This document appears to be instructions for a computer science exam containing two sections - Group A with long answer questions and Group B with short answer questions. For Group A, students must answer 4 out of 5 questions, each worth 10 marks. The questions cover topics like strings, while loops, writing a program to find the sum and greatest number from user-input integers, differences between structures and unions, and classes in OOP. For Group B, students must answer 7 out of 15 questions, each worth 5 marks. The short answer questions cover topics such as system analysis in SDLC, differences between DDL and DML, network database models, normalization, computer networks and LANs, network topologies, OOP characteristics,

1. Sub Code: 230
HISSAN – Grade XII
Pre- Board Examinations 2078
Computer Science
Program: Science F.M:75
Time : 2.15 hrs
Candidates are required to give their answers in their own words as far as
practicable. The figures in the margin indicate full marks.
GROUP A
Long answer questions
Attempt any FOUR questions [4 10=40]
1. What is string? Explain any four string handling functions with example.
[10]
2. a) Describe while loop with example. [5]
b) WAP to check whether the given number is exactly divisible by 3 or
not. [5]
3. Write a program which asks to enter 10 integer numbers and find the sum
of the numbers and also find the greatest number. [10]
4. a) Differentiate between structure and union. [5]
b) Define class in OOP. [5]
5. a) What is DBMS. Define the terms data redundancy and
inconsistency. [1+2+2]
b) Explain pointer with example. [5]
GROUP B
Short answer questions
Attempt any SEVEN questions [7 5=35]
6. Describe system analysis phase of SDLC. [5]
7. Define database language. Differentiate between DDL and DML. [1+4]
8. What is network database model? Explain. [5]
9. Define the term normalization. Write advantages of normalization. [5]
10. What is computer network? Describe LAN. [1+4]
11. Describe Bus and Mesh network topology with diagram. [2.5+2.5]
12. What is OOP? List the characteristics of OOP. [1+4]
13. List applications of AI. [5]
14. List out the components of multimedia and explain any one. [5]
15. Write short notes on: [2.5+2.5]
a. Modem b.Encapsulation
THE END