II PUC COMPUTER SCIENCE

MODEL QUESTION PAPER-1

Time: 3 Hours 15 Minutes                                                                                       Max. Marks: 70

PART A   

Answer all questions. Each question carries ONE mark.                          10 X 1 = 10

1.         What is cache memory?

2.         Write the standard symbol for OR gate.

3.         Name the data structure whose relationship between data elements is by means of links.

4.         Mention the access specifiers used in a class.

5.         What is this pointer?

6.         What is primary key?

7.         What is topology?

8.         What is cyber law?

9.         Define e-commerce.

10.       What will be the extension of hypertext markup language files?

PART B

Answer any FIVE questions. Each question carries TWO marks.                        5 X 2 = 10

11.       What would be the complement of the following:

a)     

b)    

12.       Draw a general K-map for 3 variables A, B and C.

13.       Explain data abstraction in OOPS.

14.       When is copy constructor used in a program?

15.       Mention any 4 file opening modes and their purpose.

16.       What is data mining?

17.       How do you modify the column name and width for existing table in SQL? Give an example.

18.       Mention the protection methods that can be used to secure a network.

PART C

Answer any FIVE questions. Each question carries THREE marks.                     5 X 3 = 15

19.       Explain different types of I/O ports.

20.       Draw the logic gate diagram to implement AND or OR gates using NAND gates only.

21.       Explain the memory representation of a stack using one-dimensional array.

22.       What is the relationship between object and pointers? Give example.

23.       Differentiate between ifstream class and ofstream class.

24.       What is a relationship? Classify and give example.

25.       Explain types of e-commerce.

26.       Give the features of DHTML.

PART D

Answer any SEVEN questions. Each question carries FIVE marks.                     7 X 5 = 35

27.       a) State the two absorption laws of Boolean algebra. Verify using truth table.

b) Simplify F = x.y +x.z +x.y.z using laws of Boolean algebra. State clearly the laws used  

    for simplification at each step.

28.       Write an algorithm to search for an element in an array using binary search.

29.       Write an algorithm to delete a data element from the front end of the queue.

30.       Write any 3 advantages and 2 disadvantages of object-oriented programming.

31.       A class clock has hour and minute as data members. Create member functions to initialize the data members, display the time and convert time in hours and minutes to minutes.

32.       Explain inline functions with syntax and example.

33.       Explain destructors with syntax and example.

34.       What is virtual base class? Give example.

35.       Explain the features of database system.

36.       Explain with example the creation of a table in SQL for storing the details of employees and write SQL queries to get the maximum and minimum in the salary domain.

37.       What is gateway? Explain.

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