Kerala Plus One Question Paper 2025 Computer Science and Information Technology

KERALA BOARD

QUESTION
PAPER
2025
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Kerala Board of Public
Examinations

FY-352
Reg. No. : ......................................

Name : ...........................................

FIRST YEAR HIGHER SECONDARY EXAMINATION, MARCH 2025

Time : 2 Hours
Part – II Cool-off time : 15 Minutes
COMPUTER SCIENCE & INFORMATION TECHNOLOGY
Maximum : 60 Scores

General Instructions to Candidates :
 There is a ‘Cool-off time’ of 15 minutes in addition to the writing time.
 Use the ‘Cool-off time’ to get familiar with questions and to plan your answers.
 Read questions carefully before answering.
 Read the instructions carefully.
 Calculations, figures and graphs should be shown in the answer sheet itself.
 Malayalam version of the questions is also provided.
 Give equations wherever necessary.
 Electronic devices except non-programmable calculators are not allowed in the
Examination Hall.

 
    15  ‘  ’ .
 ‘  ’    
 .
      .
    .
  , , ,   
.
   .
    .
     
    .

FY-352 1 P.T.O.

PART-A
Answer any 5 questions from 1 to 6. Each carries 1 score. (5  1 = 5)
1. Find the odd one out :
(a) Assembler (b) Antivirus
(c) Interpreter (d) Compiler

2. Which of the following is a valid identifier ?
(a) name $ (b) name_1
(c) 123name (d) #name

3. Array is ________ data type.
(a) fundamental (b) derived
(c) user defined (d) None of these

4. gets( ) function is defined in _________ header file.
(a) string.h (b) stdlib.h
(c) stdio.h (d) ctype.h

5. Which of the following is an unguided media ?
(a) Optical fiber (b) Coaxial cable
(c) Radio waves (d) Twisted pair cable

6. The tools used to detect malicious software and cure the infected system is ________.
(a) cookies (b) firewall
(c) antivirus (d) None of these

PART-B
Answer any 11 questions from 7 to 19. Each carries 2 scores. (11  2 = 22)

7. Match the following :
(A) (B)
(a) First Generation Computer (i) Microprocessor
(b) Second Generation Computer (ii) Vacuum Tube
(c) Third Generation Computer (iii) Transistor
(d) Fourth Generation Computer (iv) Integrated circuit

8. Explain any two methods of representing integers in computer memory.

FY-352 2

PART-A
1  6    5  .
1  . (5  1 = 5)
1.  .
(a) Assembler (b) Antivirus
(c) Interpreter (d) Compiler

2.  valid identifier  ?
(a) name $ (b) name_1
(c) 123name (d) #name

3. Array  data type .
(a) fundamental (b) derived
(c) user defined (d) None of these

4. gets( ) function  header file-  define  ?
(a) string.h (b) stdlib.h
(c) stdio.h (d) ctype.h

5.   unguided media  ?
(a) Optical fiber (b) Coaxial cable
(c) Radio waves (d) Twisted pair cable

6. Malicious software   system-  
 tools  ________.
(a) cookies (b) firewall
(c) antivirus (d) None of these

PART-B
7  19    11  .
2  . (11  2 = 22)

7.   :
(A) (B)
(a) First Generation Computer (i) Microprocessor
(b) Second Generation Computer (ii) Vacuum Tube
(c) Third Generation Computer (iii) Transistor
(d) Fourth Generation Computer (iv) Integrated circuit

8.   integer- represent   
.

FY-352 3 P.T.O.

9. Write short notes on :
(a) ASCII
(b) EBCDIC

10. What is meant by free and open software ? Give two examples.

11. Classify the following tokens into keywords and identifiers :
(a) Short (b) Name
(c) Long (d) Continue

12. Define algorithm and flowchart.

13. What is the purpose of escape sequences ? Give two examples.

14. Explain any four built-in datatypes in C++.

15. Define data type modifier. Give two examples.

16. What is the difference between exit controlled and entry controlled loops ? Give
example for each category.

17. (a) What is an array ? (1)
(b) Declare an array to store 10 integer numbers. (1)

18. Explain any four advantages of modular programming.

19. Differentiate call by value and call by reference methods of passing arguments in
functions.

PART-C
Answer any 7 questions from 20 to 28. Each carries 3 scores. (7  3 = 21)
20. Explain basic logic gates with truth tables.

21. What is register ? Explain any four registers.

22. Explain various stages in data processing.

23. Write an algorithm and draw a flowchart to check whether the given number is odd or even.

24. Briefly explain switch statement with syntax and example.

FY-352 4

9.   :
(a) ASCII
(b) EBCDIC

10. Free and open software    ? 
 .

11.   token- keyword, identifier   .
(a) Short (b) Name
(c) Long (d) Continue

12. Algorithm, flowchart  .

13. Escape sequence-   ?   .

14. C++    built-in datatype- .

15. Data type modifier .   .

16. Exit controlled loop, entry controlled loop     ?
 category-  .

17. (a) Array   ? (1)
(b)  integer number-   array- declaration
. (1)

18. Modular programming-   .

19. Function- argument- pass  call by value, call by reference
   .
PART-C
20  28    7  .
3  . (7  3 = 21)
20. Truth table-  basic logic gate- .

21. Register   ?   register- .

22. Data processing-  stage- .

23.       
,  .

24. Switch statement- syntax,    .
FY-352 5 P.T.O.

25. Write a C++ program to print factorial of a given number.

26. Write short notes on :
(a) Strcpy( )
(b) Strcmp( )
(c) Strlen( )

27. Explain different types of guided media in data communication system.

28. Write short notes on :
(a) Spams
(b) Hacking
(c) Phishing

PART-D
Answer any 3 questions from 29 to 33. Each carries 4 scores. (3  4 = 12)
29. Convert the following numbers to the base specified :
(i) (1010101) 2 = (_____) 10

(ii) (96)10 = (_____)2

(iii) (ABC)16 = (_____)10

(iv) (128)10 = (_____)8

30. Write short notes on :
(a) Relational operators in C++. (2)
(b) Pre and Post operations of ++ operator. (2)

31. Write a program to print the sum of elements of an array of n elements.

32. (a) Compare LAN and WAN. (2)
(b) Define Client Server. (1)
(c) What is the use of Modem ? (1)

33. Explain the following :
(a) SMS
(b) MMS
(c) GPS
(d) Smart cards
_____________

FY-352 6

25.   factorial  C++  .

26.   :
(a) Strcpy( )
(b) Strcmp( )
(c) Strlen( )

27. Data communication system-  guided media .

28.   :
(a) Spams
(b) Hacking
(c) Phishing

PART-D
29  33    3  .
4  . (3  4 = 12)
29.       :
(i) (1010101) = (_____)
2 10

(ii) (96)10 = (_____)2
(iii) (ABC)16 = (_____)10

(iv) (128)10 = (_____)8

30.   :
(a) C++  Relational operator- (2)
(b) ++ operator- Pre, Post operation  (2)

31. ‘n’ element-   array- element-  
 .

32. (a) LAN, WAN   . (2)
(b) Client Server . (1)
(c) Modem-   ? (1)

33.   :
(a) SMS
(b) MMS
(c) GPS
(d) Smart cards
_____________

FY-352 7 P.T.O.

FY-352 8