#### Model paper

11th Standard

Reg.No. :
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Computer Science

Time : 01:00:00 Hrs
Total Marks : 80

Part A

5 x 1 = 5
1. When a system restarts _______ which type of booting is used.

(a)

Warm booting

(b)

Cold booting

(c)

Touch boot

(d)

Real boot

2. Which of the mechanical calculators used for numerical calculations?

(a)

Abacus

(b)

Slide rule

(c)

Napier Bones

(d)

All of the these

3. File Management manages_______

(a)

Files

(b)

Folders

(c)

Directory systems

(d)

All the Above

4. Linux is a project of_____.

(a)

Ken Thomson

(b)

Dennis Ritchie

(c)

Linus Torvalds

(d)

William Shockley

5. Which notation is similar to programming languages?

(a)

Pseudo code

(b)

Flowchart

(c)

Statements

(d)

Decomposition

6. Part B

9 x 2 = 18
7. What is the function of an ALU?

8. Give four examples for secondary storage devices.

9. What are the different Operating Systems used in computer?

10. Name the types of Digital Network.

11. How do we refine a statement?

12. What is a Programming Language?

13. What is selection statement? write it's types?

14. What is the syntax to declare two – dimensional array.

15. How is encapsulation and abstraction are interrelated?

16. Part C

9 x 3 = 27
17. Write short note on impact printer.

18. Define touch screen?

19. Explain the process management algorithms in Operating System

20. Write the types of Operating System?

21. Draw a flowchart for -3case analysis using alternative statements.

22. What are the notations used for expressing algorithms?

23. Rewrite the following code so that it is functional:
v = 5;
do;
{
total += v;
cout << total;
while v <= 10

24. What is called nested structure. Give example

26. Part D

6 x 5 = 30
27. Explain the basic components of a computer with a neat diagram.

28. Explain booting of computer and its types.

29. Explain the concept of a Distributed Operating System.

30. Decanting problem. You are given three bottles of capacities 5 ,8 and 3 litres. The 8L bottle is filled with oil, while the other two are empty. Divide the oil in 8L bottle into two equal quantities. Represent the state of the process by appropriate variables. What are the initial and final states of the process? Model the decanting of oil from one bottle to another by assignment. Write a sequence of assignments to achieve the final state.

31. Construct an iterative algorithm to find quotient and remainder of two integer division.

32. Write programs to find the sum of the following series:
(a) $x-\frac { { x }^{ 2 } }{ 2! } +\frac { { x }^{ 3 } }{ 3! } -\frac { { x }^{ 4 } }{ 4! } +\frac { { x }^{ 5 } }{ 5! } -\frac { { x }^{ 6 } }{ 6! }$
(b) $x+\frac { { x }^{ 2 } }{ 2 } +\frac { { x }^{ 3 } }{ 3 } +...+\frac { { x }^{ n } }{ n }$