Computer Science Class 12 Sample Paper 2024, Download Solved PDF

The Central Board of Secondary Education (CBSE) has released the computer science class 12 sample paper 2023-24 with solutions on the official website cbseacademic.nic.in. The computer science sample papers class 12 2024 are based on the latest Computer Science syllabus and exam pattern.

The CBSE Class 12 Computer Science exam will have a maximum of 100 marks. 70 marks for the computer science theory paper and 30 for practical exams. All students are asked to download and practice the Computer Science sample papers class 12 solved pdf 2024 several times before the actual exam.

Computer Science Class 12 Sample Paper 2023-24 with Solutions

The board also released the CBSE class 12 Computer Sample paper 2023-24 marking scheme for the academic year. Every year, the Council releases CBSE Class 12 Computer Science Sample Papers 2024 to assist students in performing exceptionally well on their CBSE final exams.

Previously, the Board made changes to the CBSE class 12 syllabus, including 20% MCQ-type questions, 40% competency-based questions, and the remaining 40% short-answer and long answer-type questions based on positive responses. If the students seriously practice this Computer Science sample paper 2024, they will be very well informed about the recent changes in patterns made by the board.

Computer Science Sample Papers Class 12 Solved Pdf 2024

Students should download and practice the CBSE Class 12 Computer Science Sample Papers 2024 PDF with solutions at least 2 times before the theory exam date. The practical exam for CBSE Class 12 Computer Science includes a lab test, report file, project, and viva.

Additionally, the syllabus for CBSE Class 12 Computer Science  is split into three main units: Unit I (20 marks), Unit II (10 marks), and Unit III (10 marks). Download the computer science sample papers class 12 solved pdf 2024 from the below box.

CBSE Class 12 Computer Science Sample Paper 2024- Instruction

The CBSE Sample papers for class 12 computer science have a total mark of 70. The Computer sample paper is divided into 5 sections. The total time spent attempting the paper is three hours. Before attempting the paper, please read the additional instructions below.

1. This question paper includes 35 questions.
2. The paper is divided into four sections: A, B, C, D, and E.
3. Section A consists of 18 questions (1 through 18). Each question carries one mark.
4. Section B consists of 7 questions (19-25). Each question carries two marks.
5. Section C consists of five questions (26-30). Each question carries three marks.
6. Section D consists of two questions (31 and 32). Each question carries four marks.
7. Section E consists of three questions (33–35). Each question carries 5 points.
8. All programming questions are directed to be answered using Python language only.

Computer Science Class 12 Sample Paper 2023-24 with solutions

SECTION A (Mark – 1)

1. State True or False:
“In a Python program, if a break statement is given in a nested loop, it terminates the execution of all loops in one go.”

Answer:

2. In a table in MYSQL database, an attribute A of datatype varchar(20) has the value “Keshav”. The attribute B of datatype char(20) has value
“Meenakshi”. How many characters are occupied by attribute A and
attribute B?
a. 20,6   b. 6,20
c. 9,6     d. 6,9

Answer: Option b) 6,20

3. What will be the output of the following statement:
print(3-2**2**3+99/11)
a. 244      b. 244.0
c. -244.0  d. Error

Answer: Option c) -244.0

4.  Select the correct output of the code:

Options:
a. PYTHON-IS-Fun
b. PYTHON-is-Fun
c. Python-is-fun
d. PYTHON-Is -Fun

Answer:PYTHON-is-Fun 

5. In MYSQL database, if a table, Alpha has degree 5 and cardinality 3, and another table, Beta has degree 3 and cardinality 5, what will be the degree and cardinality of the Cartesian product of Alpha and Beta?
a. 5,3     b. 8,15
c. 3,5     d. 15,8

Answer: Option b) 8,15

6. Riya wants to transfer pictures from her mobile phone to her laptop. She uses Bluetooth Technology to connect two devices. Which type of network will be formed in this case?
a. PAN     b. LAN
c. MAN    d. WAN

Answer: Option a) PAN

7. Which of the following will delete key-value pair for key = “Red” from a dictionary D1?
a. delete D1(“Red”)
b. del D1[“Red”]
c. del.D1[“Red”]
d. D1.del[“Red”]

Answer: Option b) del D1[“Red”]

8. Consider the statements given below and then choose the correct output from the given options:
pride=”#G20 Presidency”
print(pride[-2:2:-2])

Options:
a. ndsr
b. ceieP0
c. ceieP
d. yndsr

Answer: Option b) ceieP0

9. Which of the following statement(s) would give an error during execution of the following code?
tup = (20,30,40,50,80,79)
print(tup) #Statement 1
print(tup[3]+50) #Statement 2
print(max(tup)) #Statement 3
tup[4]=80 #Statement 4
Options:
a. Statement 1
b. Statement 2
c. Statement 3
d. Statement 4

Answer: Option d) Statement 4

10.  What possible outputs(s) will be obtained when the following code is executed?

Options:
a. RED*
WHITE*
BLACK*

b. WHITE*
BLACK*
c. WHITE* WHITE*
BLACK* BLACK*
d. YELLOW*
WHITE*WHITE*
BLACK* BLACK* BLACK*

Answer: Option b
WHITE*
BLACK*

11 Fill in the blank:
The modem at the sender’s computer end acts as a ____________.
a. Model
b. Modulator
c. Demodulator
d. Convertor

Answer:Option b) Modulator

12. Consider the code given below:

Which of the following statements should be given in the blank for
#Missing Statement, if the output produced is 110?
Options:
a. global a
b. global b=100
c. global b
d. global a=100

Answer: Option c) global b

13. State whether the following statement is True or False:
An exception may be raised even if the program is syntactically correct.

Answer: True

14. Which of the following statements is FALSE about keys in a relational database?
a. Any candidate key is eligible to become a primary key.
b. A primary key uniquely identifies the tuples in a relation.
c. A candidate key that is not a primary key is a foreign key.
d. A foreign key is an attribute whose value is derived from the primary key of another relation.

Answer: Option c) A candidate key that is not a primary key is a foreign key.

15. Fill in the blank:
In case of _____________ switching, before a communication starts, a dedicated path is identified between the sender and the receiver.

Answer:Circuit

16. Which of the following functions changes the position of file pointer and returns its new position?
a.flush()
b.tell()
c.seek()
d.offset()

Answer: Option c.  seek()

Q17 and 18 are ASSERTION AND REASONING-based questions. Mark the correct choice as
(a) Both A and R are true and R is the correct explanation for A
(b)Both A and R are true and R is not the correct explanation for A
(c) A is True but R is False
(d)A is false but R is True

17. Assertion(A): List is an immutable data type
Reasoning(R): When an attempt is made to update the value of an immutable variable, the old variable is destroyed and a new variable is created by the same name in memory.

Answer: Option d) A is false but R is True

18 Assertion(A): Python Standard Library consists of various modules.
Reasoning(R): A function in a module is used to simplify the code and avoid repetition.

Answer: Option b) Both A and R are true but R is not the correct explanation for A

CBSE Class 12 Computer Sample Paper 2024: Section B

SECTION B (Marks – 2)

19. (i) Expand the following terms: POP3 , URL
(ii) Give one difference between XML and HTML.
OR
(i) Define the term bandwidth with respect to networks. (1+1=2)
(ii) How is http different from https?

20. The code given below accepts a number as an argument and returns the reverse number. Observe the following code carefully and rewrite it after removing all syntax and logical errors. Underline all the corrections made.

21. Write a function countNow(PLACES) in Python, that takes the dictionary, PLACES as an argument and displays the names (in uppercase)of the places whose names are longer than 5 characters.
For example, Consider the following dictionary
PLACES={1:”Delhi”,2:”London”,3:”Paris”,4:”New
York”,5:”Doha”}
The output should be:
LONDON
NEW YORK
OR
Write a function, lenWords(STRING), that takes a string as an argument and returns a tuple containing length of each word of a string.
For example, if the string is “Come let us have some fun”, the tuple will have (4, 3, 2, 4, 4, 3)

22. Predict the output of the following code:

23. Write the Python statement for each of the following tasks using BUILT-IN functions/methods only:
(i) To insert an element 200 at the third position, in the list L1.
(ii) To check whether a string named, message ends with a full stop / period or not.

OR
A list named studentAge stores age of students of a class. Write the Python command to import the required module and (using built-in function) to display the most common age value from the given list.

24. Ms. Shalini has just created a table named “Employee” containing columns Ename, Department and Salary.
After creating the table, she realized that she has forgotten to add a primary key column in the table. Help her in writing an SQL command to add a primary key column EmpId of integer type to the table Employee.
Thereafter, write the command to insert the following record in the table:
EmpId- 999
Ename- Shweta
Department: Production
Salary: 26900
OR
Zack is working in a database named SPORT, in which he has created a table named “Sports” containing columns SportId, SportName,
no_of_players, and category.
After creating the table, he realized that the attribute, category has to be deleted from the table and a new attribute TypeSport of data type string has to be added. This attribute TypeSport cannot be left blank. Help Zack write the commands to complete both the tasks.

25. Predict the output of the following code:

Computer Science Sample Paper 2024 for Class 12: Section C

SECTION C

26. Predict the output of the Python code given below:

27. Consider the table CLUB given below and write the output of the SQL queries that follow.

(i) SELECT COUNT(DISTINCT SPORTS) FROM CLUB;
(ii) SELECT CNAME, SPORTS FROM CLUB WHERE,  DOAPP<“2006-04-30” AND CNAME LIKE “%NA”;
(iii) SELECT CNAME, AGE, PAY FROM CLUB WHERE
GENDER = “MALE” AND PAY BETWEEN 1000 AND 1200;

28. Write a function in Python to read a text file, Alpha.txt and displays those lines which begin with the word ‘You’.
OR
Write a function, vowelCount() in Python that counts and displays the number of vowels in the text file named Poem.txt.

29 Consider the table Personal given below:

Based on the given table, write SQL queries for the following:
(i) Increase the salary by 5% of personals whose allowance is known.
(ii) Display Name and Total Salary (sum of Salary and Allowance) of all personals. The column heading ‘Total Salary’ should also be displayed.
(iii) Delete the record of personals who have salary greater than 25000

30 A list, NList contains following record as list elements:
[City, Country, distance from Delhi]
Each of these records are nested together to form a nested list. Write the following user defined functions in Python to perform the specified operations on the stack named travel.
(i) Push_element(NList): It takes the nested list as an argument and pushes a list object containing name of the city and country, which are not in India and distance is less than 3500 km
from Delhi.
(ii) Pop_element(): It pops the objects from the stack and displays them. Also, the function should display “Stack Empty” when thereare no elements in the stack.
For example: If the nested list contains the following data:
NList=[[“New York”, “U.S.A.”, 11734],
[“Naypyidaw”, “Myanmar”, 3219],
[“Dubai”, “UAE”, 2194],
[“London”, “England”, 6693],
[“Gangtok”, “India”, 1580],
[“Columbo”, “Sri Lanka”, 3405]]
The stack should contain:
[‘Naypyidaw’, ‘Myanmar’],
[‘Dubai’, ‘UAE’],
[‘Columbo’, ‘Sri Lanka’]
The output should be:
[‘Columbo’, ‘Sri Lanka’]
[‘Dubai’, ‘UAE’]
[‘Naypyidaw’, ‘Myanmar’]
Stack Empty

CBSE Class 12 Computer Sample Paper 2023-24: Section D

SECTION D

31. Consider the tables PRODUCT and BRAND given below:

Write SQL queries for the following:
(i) Display product name and brand name from the tables PRODUCT and BRAND.
(ii) Display the structure of the table PRODUCT.
(iii) Display the average rating of Medimix and Dove brands
(iv) Display the name, price, and rating of products in descending order of rating.

32. Vedansh is a Python programmer working in a school. For the Annual Sports Event, he has created a csv file named Result.csv, to store the results of students in different sports events. The structure of Result.csv is :
[St_Id, St_Name, Game_Name, Result]
Where
St_Id is Student ID (integer)
ST_name is Student Name (string)
Game_Name is name of game in which student is participating(string) Result is result of the game whose value can be either ‘Won’, ‘Lost’ or ‘Tie’
For efficiently maintaining data of the event, Vedansh wants to write the following user defined functions:
Accept() – to accept a record from the user and add it to the file
Result.csv. The column headings should also be added on top of the csv file.
wonCount() – to count the number of students who have won any event.
As a Python expert, help him complete the task.

Computer Science Sample Paper 2024

SECTION E

33. Meticulous EduServe is an educational organization. It is planning to setup its India campus at Chennai with its head office at Delhi. The Chennai campus has 4 main buildings – ADMIN, ENGINEERING, BUSINESS and MEDIA

a) Suggest and draw the cable layout to efficiently connect various blocks of buildings within the CHENNAI campus for connecting the digital devices.

b) Which network device will be used to connect computers in each block to form a local area network?
c) Which block, in Chennai Campus should be made the server? Justify your answer.
d) Which fast and very effective wireless transmission medium should preferably be used to connect the head office at DELHI with the campus in CHENNAI?
e) Is there a requirement of a repeater in the given cable layout? Why/ Why not?

34 (i) Differentiate between r+ and w+ file modes in Python.
(ii) Consider a file, SPORT.DAT, containing records of the following
structure:
[SportName, TeamName, No_Players]
Write a function, copyData(), that reads contents from the file PORT.DAT and copies the records with Sport name as “Basket Ball” to the file named BASKET.DAT. The function should return the total number of records copied to the file BASKET.DAT.
OR
(i) How are text files different from binary files?
(ii) A Binary file, CINEMA.DAT has the following structure:
{MNO:[MNAME, MTYPE]}
Where
MNO – Movie Number
MNAME – Movie Name
MTYPE is Movie Type
Write a user-defined function, findType(mtype), that accepts mtype as a parameter and displays all the records from the binary file CINEMA.DAT, that have the value of Movie Type as mtype.

35 (i) Define the term Domain with respect to RDBMS. Give one example to support your answer.

(ii) Kabir wants to write a program in Python to insert the following record in the table named Student in MYSQL database, SCHOOL:
rno(Roll number )- integer
name(Name) – string
DOB (Date of birth) – Date
Fee – float
Note the following to establish connectivity between Python and
MySQL:
Username – root
Password – tiger
Host – localhost
The values of fields rno, name, DOB and fee has to be accepted from the user. Help Kabir to write the program in Python.
OR
(i) Give one difference between alternate key and candidate key.
(ii) Sartaj has created a table named Student in MYSQL database, SCHOOL:
rno(Roll number )- integer
name(Name) – string
DOB (Date of birth) – Date
Fee – float
Note the following to establish connectivity between Python and
MySQL:
Username – root
Password – tiger
Host – localhost

Sartaj, now wants to display the records of students whose fee is more than 5000. Help Sartaj to write the program in Python.

Sharing is caring!