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HSEB MODEL Question Paper of Computer Science
Grade XI
Subject Code: 130 ‘C’

Full Marks: 75 Pass Marks: 27 Time: 3 Hrs
Candidates are required to give their answer in their own words as far as practicable. The figures in the margin indicate full marks.

Attempt any three questions. [3 X 10 = 30]
1. Describe the application of computer system in our daily life. [10]
2. What is an operating system? Describe any the functions of operating system. [2 + 8]
3. Define the terms ‘Boolean Algebra’ and ‘Logic Gate’. Explain the NAND and X-OR gates with truth table and symbol. [2 + 8]
4. What is a high level programming language? Write an algorithm and flow chart to display the greatest number among any three numbers. [2 + 8]

Group ‘B’ – Short answer questions

Attempt any nine questions. [9 X 5 = 45]
5. Describe the features of digital computers. [5]
6. What is binary number system? Convert (BCA)8 octal number into (?)16 hexadecimal number. [1 + 4]
7. What is softcopy? List out any four differences between primary and secondary memory. [1 + 4]
8. What is program testing and debugging? Explain why logical errors are difficult and correct than syntax errors. [1 + 4]
9. What is word processor? Give the major features of word processor. [1 + 4]
OR
List the advantages and disadvantages of Internet.
10. What is spreadsheet application program? List the uses of spreadsheet. [1 + 4]
11. What is mobile computing? Explain why it is becoming more popular these days. [1 + 4]
OR
Differentiate between third generation computer and fourth generation computer on the basis of technology.
12. Describe the terms ‘Operator’, ‘Operand’ and ‘Operation’ with suitable examples. [5]
13. What is HTML? Describe the importance of HTML in web-page designing. [1 + 4]
OR
What is Database? List out the different application areas of Database Management System. [1 + 4]
14. Subtract (111)2 from (111001)2 using 1’s and 2’s complement method of subtraction. [2.5 + 2.5]

15. Write short notes on : [2.5 + 2.5]
(a) Cyber Law in Nepal
(b) E-Commerce



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