MBSE HSSLC Sample Question Paper Science

Total number of printed pages – 4 HSS/016

COMPUTER SCIENCE
(Theory)
SAMPLE QUESTION PAPER
Full Marks - 70
Time : 3 hours

General instructions:
(i) All questions are compulsory.
(ii) Programming Language: C++.
(iii) Figures in the margin indicate marks.

1. Choose the correct answer: 5×1=5
(a) If n = 9 and m = 2 then what will be the output of the expression n%m in C++?
(i) 4 (ii) 9 (iii) 1 (iv) 8
(b) How many elements can be stored in an array arr[5]?
(i) 6 (ii) 5 (iii) 4 (iv) 1
(c) Which of the following is a DDL command?
(i) CREATE TABLE (ii) insertion
(iii) SELECT (iv) None of the above
(d) What do you call the rule “if 0.1 = 0 then 1+0 = 1”?
(i) De Morgan’s theorem (ii) Distributive law
(iii) Associative law (iv) Principle of duality
(e) The full form of URL is –
(i) Uniform Resource Locator (ii) Universal Resource Locator
(iii) Universal Resource Language (iv) Uniform Resource Language.
2. Fill in the blanks: 5×1=5
(a) Member function of a class can be defined outside a class by using _________. (scope
resolution operator/friend function/dot operator)
(b) A stack is a linear structure implemented in ________ manner. (FIFO/underflow/LIFO)
(c) The number of rows in a relation is known as _______.(tuple/cardinality/attribute)
(d) The _______ gate is a gate with only one input signal and one output signal.
(OR/NOT/AND)
(e) A device that connects dissimilar network is called _______. (Hubs/Gateway/Switch)
3. State whether the following statements are True or False: 4×1=4
(a) C++ considers strings as single dimension character arrays.
(b) Simple data structures are normally built from the primitive data types.
(c) The full form of DML is “Data Model Language”.
(d) The dual of X+X’Y is X’.(X+Y’)

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4. Answer the following questions : 13×2=26
(a) Why is main function special in C++?
(b) What are the advantages of OOP?
(c) (i) Differentiate between actual parameters and formal parameters with a suitable C++ code.
OR
(ii) Differentiate between implicit type conversion and explicit type conversion.
(d) What is a constructor? What are the types of constructor?
(e) Is it possible to overload a constructor? If yes how?
(f) (i) When will you make a function inline and why?
OR
(ii) What is the significance of access specifiers in a class?
(g) How is computer memory allotted for a two – dimensional array?
(h) Define the term data structure and state its significance.
(i) (i) Explain the types of Data Structure.
OR
(ii) Explain the operations on Data Structure.
(j) What does '\0' signify in array? Explain with example.
(k) What are the various data models available for database systems?
(l) (i) What is meant by tautology and fallacy?
OR
(ii) What is meant by Minterm and Maxterm?
(m) How do repeaters differ from routers in terms of functionality?
5. Answer the following questions in detail: 10×3=30
(a) What is the difference between call by value and call by reference in a user defined function
in C++? Give an example in C++ to illustrate both.
(b) Discuss the concepts of Object Oriented Programming Language. How are these
implemented in software terms in C++?
(c) Illustrate the concept of function overloading with the help of an example.
(d) (i) What is copy constructor? Explain with an example.
OR
(ii) Define a class student with the following specifications:
private members of the class student
admno integer,
sname 20 characters,
eng, math, science float,
total float,
ctotal() A function to calculate eng + math + science.
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Public member functions of the class student
takedata() A function to accept values for sname, eng, math, science and
invoke ctotal() to calculate total.
Showdata() A function to display all the data members on the screen.
(e) Answer the questions (i) to (iii) based on the following code:
class regular
{
char schoolcode[10];
public:
void inregular();
void outregular();
};
class distance
{
char studycentrecode[5];
public:
void indistance();
void outdistance();
};
class course: public regular, private distance
{
char code[5];
float fees;
public:
void incourse();
void outcourse();
};
(i) Which type of inheritance is shown in the above example?
(ii) Write names of all the members accessible through an object of class course.
(iii) Is the function inregular() accessible inside the function indistance()? Justify
your answer.
(f) (i) An array X[7][20] is stored in the memory with each element requiring 2 bytes of
storage. If the base address of array is 2000, calculate the location of X[3][5] when the array
X is stored in column major order.
OR
(ii) An array G[50][20] is stored in the memory along the row with each of its element
occupying 8 bytes. Find out the location of G[10][15], if G[0][0] is stored at 4200.
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(g) Consider the following table:
Table: DOCTOR
ID NAME DEPT SEX EXPERIENCE
101 John ENT M 12
104 Smith ORTHOPEDIC M 5
107 George CARDIOLOGY M 10
114 Lara SKIN F 3
117 Lucy ENT F 3
118 Joseph MEDICINE M 15
Write SQL command for (i) to (iii)
(i) To show NAME, DEPT and EXPERIENCE of Doctors.
(ii) To display lists of doctors in ascending order of their ID.
(iii) To show the doctors from ENT department only.
(h) (i) State and prove the De Morgan’s theorem (any one) algebraically.
OR
(ii) Draw the logic circuit diagram for X' . (Y' + Z')
(i) What are the advantages of E-mail and World Wide Web services provided by INTERNET?
(j) Discuss the various types of networks.

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