Saturday, March 14, 2026

Question 1

A company FutureTech Pvt. Ltd. has four departments in its office building:

Administration
Finance
Marketing
Development

Distances between departments:

Connection	Distance
Administration – Finance	45 m
Administration – Marketing	60 m
Administration – Development	75 m
Finance – Marketing	35 m
Finance – Development	50 m
Marketing – Development	40 m

The company also has a branch office in Chennai, located 1200 km away.

Questions

a) Suggest the most suitable department to install the network switch.

Answer: Finance Department

Reason:
Finance department has comparatively shorter distances with other departments (45 m, 35 m, 50 m).
Installing the switch at a central location reduces cable usage and improves network efficiency.

b) Which transmission media should be used for connecting departments within the building?

Answer: Twisted Pair Cable

Reason:
Twisted pair cables are widely used for LAN connections inside buildings because they are cheap, easy to install, and suitable for short distances.

c) Identify the network type formed between the main office and the Chennai branch.

Answer: WAN (Wide Area Network)

Reason:
WAN connects networks across cities, states, or countries. Since the distance is 1200 km, it forms a WAN.

d) Name the device used to connect these networks.

Answer: Router

Reason:
Routers connect different networks and control the flow of data packets between them.

Question 2

A university has the following departments:

Library
Computer Lab
Administration
Examination Cell

Distances between departments:

Connection	Distance
Library – Computer Lab	25 m
Library – Administration	35 m
Library – Examination	50 m
Computer Lab – Administration	30 m
Computer Lab – Examination	40 m
Administration – Examination	20 m

The university wants to connect its campus with another campus 450 km away.

Questions

a) Suggest the best place to install the network switch.

Answer: Administration Department

Reason:
Administration has relatively shorter and balanced distances (35 m, 30 m, 20 m) with other departments, making it the central point of the network.

b) Which cable will be suitable for interconnecting the departments?

Answer: Ethernet (Twisted Pair) Cable

Reason:
Ethernet cables support high-speed data transmission within LAN networks inside buildings.

c) What type of network will connect the two campuses?

Answer: WAN

Reason:
A connection covering large geographical areas such as cities or states is categorized as WAN.

d) Which device connects a LAN to the internet?

Answer: Router

Reason:
Routers act as gateways between internal networks and external networks such as the internet.

Question 3

A hospital has four departments:

Emergency
Pharmacy
Laboratory
Billing

Distances between departments:

Connection	Distance
Emergency – Pharmacy	20 m
Emergency – Laboratory	45 m
Emergency – Billing	30 m
Pharmacy – Laboratory	35 m
Pharmacy – Billing	25 m
Laboratory – Billing	40 m

The hospital wants to connect its network with another hospital 700 km away.

Questions

a) Suggest the best department to place the network switch.

Answer: Pharmacy

Reason:
Pharmacy department has shorter average distances (20 m, 35 m, 25 m) with other departments, which makes it the optimal central location.

b) Which network topology is commonly used with switches in such networks?

Answer: Star Topology

Reason:
In star topology, all devices connect to a central switch, making the network easy to manage and troubleshoot.

c) What type of network will connect the two hospitals?

Answer: WAN

Reason:
Networks spanning large distances across cities form a Wide Area Network.

d) Which device controls the data path between networks?

Answer: Router

Reason:
Routers analyze destination addresses and forward data packets through the best path.

Question 4

A publishing company has four departments:

Content Writing
Editing
Designing
Printing

Distances between departments:

Connection	Distance
Content – Editing	30 m
Content – Designing	55 m
Content – Printing	70 m
Editing – Designing	25 m
Editing – Printing	45 m
Designing – Printing	35 m

The company also has another office 1000 km away.

Questions

a) Which department is the most suitable for installing the switch?

Answer: Editing Department

Reason:
Editing has shorter and balanced distances (30 m, 25 m, 45 m) compared to others, making it the central connection point.

b) Which cable is most appropriate for connecting devices inside the office?

Answer: Twisted Pair Cable

Reason:
It is cost-effective and commonly used in LAN environments.

c) What type of network connects the two offices?

Answer: WAN

Reason:
The connection spans long distances between cities, so it is classified as a WAN.

d) Which device directs data packets between networks?

Answer: Router

Reason:
Routers determine the best path for data transmission between multiple networks.

Question 5

A bank has four sections:

Customer Service
Accounts
Loan Department
IT Department

Distances between sections:

Connection	Distance
Customer Service – Accounts	25 m
Customer Service – Loan	40 m
Customer Service – IT	60 m
Accounts – Loan	30 m
Accounts – IT	45 m
Loan – IT	35 m

The bank has another branch 1500 km away.

Questions

a) Which department is the best location to install the switch?

Answer: Accounts Department

Reason:
Accounts department has balanced distances to all other sections, making it the most efficient central point.

b) Which cable will be used for internal networking?

Answer: Ethernet / Twisted Pair Cable

Reason:
Twisted pair cables are standard LAN cables used for short-distance networking.

c) What type of network will connect the two bank branches?

Answer: WAN

Reason:
Networks connecting different cities over long distances are classified as WAN.

d) Which networking device connects these networks?

Answer: Router

Reason:
Routers connect different LAN networks and allow communication between distant locations.

Note: “Practice these 5 questions thoroughly—I’m confident you can score full marks in them!” 💪📚

Thank You!!!

=================================

Friday, March 13, 2026

Class 12 Informatics Practices 2026: 60 Most Important Questions with Answers for CBSE Board Exam

The Informatics Practices (065) subject is an important part of the Class 12 curriculum under the Central Board of Secondary Education (CBSE). Every year many students look for important questions that can help them score good marks in the board examination.

To help students prepare effectively for the CBSE Board Exam 2026, we have compiled 100 most important questions with answers based on the latest CBSE syllabus, previous year questions and sample paper trends.

These questions cover all the major topics of Informatics Practices such as:

Python Pandas and DataFrame operations
CSV file handling
SQL queries and database concepts
Internet, digital society and data privacy

Students can use these questions for revision, practice and last-minute preparation before the board examination.

📘 Informatics Practices 2026

60 Most Important Questions with Answers

PART 1 – MCQ (1–25)

Which library is used in Python for data analysis?
Answer: Pandas
What is a DataFrame in Pandas?
Answer: A two-dimensional tabular data structure consisting of rows and columns.
Which function displays the first five rows of a DataFrame?
Answer: head()
Which function displays the last rows of a DataFrame?
Answer: tail()
Which function gives a statistical summary of the data?
Answer: describe()
What is the full form of CSV?
Answer: Comma Separated Values
Which command is used to import Pandas?
Answer: import pandas as pd
What is the full form of SQL?
Answer: Structured Query Language
Which SQL command is used to retrieve data from a table?
Answer: SELECT
Which clause is used to filter records in SQL?
Answer: WHERE
Which clause is used to sort records in SQL?
Answer: ORDER BY
Which clause is used to group records in SQL?
Answer: GROUP BY
Which function counts the number of records in SQL?
Answer: COUNT()
Which function calculates the average value in SQL?
Answer: AVG()
Which function finds the maximum value in SQL?
Answer: MAX()
Which function finds the minimum value in SQL?
Answer: MIN()
Which symbol is used for lists in Python?
Answer: [ ]
Which symbol is used for dictionaries in Python?
Answer: { }
Which key uniquely identifies a record in a table?
Answer: Primary Key
Which key creates a relationship between two tables?
Answer: Foreign Key
What is the trace of personal data left on the internet called?
Answer: Digital Footprint
Give one example of data security.
Answer: Password protection
What is illegal copying of digital content called?
Answer: Piracy
What is identity theft?
Answer: Using someone else's personal information without permission.
Give one example of cybercrime.
Answer: Hacking

PART 2 – Very Short Answer Questions (26–50)

What is Pandas?
Answer: Pandas is a Python library used for data analysis and data manipulation.
What is a Series in Pandas?
Answer: A one-dimensional labeled array.
What is a DataFrame?
Answer: A two-dimensional data structure with rows and columns.
What is a CSV file?
Answer: A text file in which values are separated by commas.
What is SQL?
Answer: A language used to manage and manipulate data in a database.
What is a Primary Key?
Answer: A field that uniquely identifies each record in a table.
What is a Foreign Key?
Answer: A field used to link two tables.
What is a database?
Answer: An organized collection of data.
What is the Internet?
Answer: A global network connecting millions of computers.
What is the World Wide Web?
Answer: A collection of websites accessed through the Internet.
What is a digital footprint?
Answer: The record of a user's online activities.
What is data privacy?
Answer: Protection of personal data from unauthorized access.
What is cybercrime?
Answer: Crime committed using computers or the internet.
What is hacking?
Answer: Unauthorized access to a computer system.
What is phishing?
Answer: A method of stealing personal information using fake emails or websites.
What is malware?
Answer: Malicious software designed to damage systems.
What is a firewall?
Answer: A security system that monitors and controls network traffic.
What is cloud computing?
Answer: Storing and accessing data over the internet instead of a local computer.
What is e-commerce?
Answer: Buying and selling goods online.
What is e-governance?
Answer: Government services delivered through the internet.
What are Intellectual Property Rights (IPR)?
Answer: Legal rights that protect creations of the mind.
What is plagiarism?
Answer: Copying someone else's work without giving credit.
What is the digital divide?
Answer: The gap between people who have access to technology and those who do not.
What is data ethics?
Answer: Ethical guidelines for using data responsibly.
What is social media?
Answer: Online platforms used for communication and sharing information.

PART 3 – Short Answer Questions (51–60)

Write a Python code to create a DataFrame.


import pandas as pd

data = {"Name": ["Aman", "Riya"], "Marks": [85, 90]}
df = pd.DataFrame(data)

print(df)

Write a Pandas code to read a CSV file.


import pandas as pd

df = pd.read_csv("data.csv")
print(df)

Write a Pandas code to save data to a CSV file.


df.to_csv("data.csv")

Write an SQL query to display all records from a Student table.


SELECT * FROM Student;

Write an SQL query to display students with marks greater than 80.


SELECT * FROM Student
WHERE Marks > 80;

Write an SQL query to sort students by marks in ascending order.


SELECT * FROM Student
ORDER BY Marks;

Write an SQL query to sort students by marks in descending order.


SELECT * FROM Student
ORDER BY Marks DESC;

Write an SQL query to calculate the average marks.


SELECT AVG(Marks)
FROM Student;

Write an SQL query to count the total number of students.


SELECT COUNT(*)
FROM Student;

Write an SQL query to find the highest marks.


SELECT MAX(Marks)
FROM Student;


Thank You!!!
===============================

Thursday, March 12, 2026

Most Important Informatics Practices Questions for Class 12 Board Exam 2026

Class 12 Informatics Practices is an important subject for students preparing for the board examination. Many questions in the exam are based on Python Pandas, SQL queries, data handling, and cyber safety topics.

In this article, we will discuss 10 most important questions of Informatics Practices for Board Exam 2026. Practicing these questions will help students revise key concepts and perform better in the examination.

1. What is a Pandas DataFrame?

Answer:
A DataFrame is a two-dimensional data structure in the Pandas library used to store data in rows and columns, similar to a table or spreadsheet.

Example:

import pandas as pd

data = {'Name':['Aman','Riya','Rahul'],
'Marks':[85,90,78]}

df = pd.DataFrame(data)
print(df)

2. What is the difference between Series and DataFrame?

Answer:

Series	DataFrame
One-dimensional data structure	Two-dimensional data structure
Contains only one column	Contains multiple columns
Similar to a list or array	Similar to a table

3. How can we read and write a CSV file in Python?

Answer:
In Python, the Pandas library is used to read and write CSV files.

read_csv() → used to read a CSV file
to_csv() → used to write a CSV file

Example:

import pandas as pd
df = pd.read_csv("student.csv")
df.to_csv("newfile.csv")

4. How can you add and delete a column in a DataFrame?

Answer:

Add a column:

df['Age'] = [18,19,20]

Delete a column:

df.drop('Age', axis=1, inplace=True)

5. What do head() and tail() functions do in Pandas?

Answer:

head() → Displays the first five rows of a DataFrame.
tail() → Displays the last five rows of a DataFrame.

Example:

df.head()
df.tail()

6. What are DDL, DML and DCL commands in SQL?

Answer:

DDL (Data Definition Language):
Used to define the structure of the database.
Examples: CREATE, ALTER, DROP

DML (Data Manipulation Language):
Used to manipulate data in tables.
Examples: INSERT, UPDATE, DELETE

DCL (Data Control Language):
Used to control access to data.
Examples: GRANT, REVOKE

7. Write SQL queries for the following.

Table: STUDENT (RollNo, Name, Marks)

To display all records:

SELECT * FROM STUDENT;

To display students with marks greater than 80:

SELECT * FROM STUDENT
WHERE Marks > 80;

8. What are Aggregate Functions in SQL?

Answer:
Aggregate functions perform calculations on a group of values and return a single result.

Examples:

SUM() → calculates total
AVG() → calculates average
COUNT() → counts number of records

Example:

SELECT AVG(Marks) FROM STUDENT;

9. What is Digital Footprint?

Answer:
A Digital Footprint is the record of a person's online activities such as social media posts, online searches, and website visits.

Advantages:

Helps in building online identity
Useful for networking

Disadvantages:

Privacy risks
Personal information misuse

10. What is Cyber Crime?

Answer:
Cyber crime is any illegal activity carried out using computers or the internet.

Types:

Hacking
Phishing
Identity theft

Prevention:

Use strong passwords
Avoid clicking unknown links
Use antivirus software

Note : More important questions of Informatics Practices for the 2026 board examination will be shared shortly. Until then, students are encouraged to study these questions thoroughly

Thank You!!!

============================================

Wednesday, March 11, 2026

IP MYSQL QUERIES 2026

10 basic SQL queries

Assume a table named STUDENT

RollNo	Name	Class	Marks	City
1	Aisha	12	85	Delhi
2	Rahul	12	72	Mumbai
3	Neha	12	91	Delhi
4	Arjun	12	65	Kolkata
5	Riya	12	88	Mumbai

1. Display All Records

SELECT * FROM STUDENT;

2. Display Only Name and Marks

SELECT Name, Marks FROM STUDENT;

3. Display Students Scoring More Than 80 Marks

SELECT * FROM STUDENT

WHERE Marks > 80;

4. Display Students from Delhi

SELECT * FROM STUDENT

WHERE City = 'Delhi';

5. Display Students in Descending Order of Marks

SELECT * FROM STUDENT

ORDER BY Marks DESC;

6. Count Total Number of Students

SELECT COUNT(*) FROM STUDENT;

7. Find Maximum Marks

SELECT MAX(Marks) FROM STUDENT;

8. Find Average Marks

SELECT AVG(Marks) FROM STUDENT;

9. Display Students from Mumbai

SELECT Name FROM STUDENT

WHERE City = 'Mumbai';

10. Display Students Whose Name Starts with "R"

SELECT * FROM STUDENT

WHERE Name LIKE 'R%';

Note: Here are some MySQL queries that may be important for the Board Examination 2026. Students are advised to revise these queries carefully before the exam. Additional question sets are currently being prepared and will be published soon.

Thank You!

Wednesday, February 11, 2026

Multiple Choice Qestions (2026)

MULTIPLE CHOICE QUESTIONS

1. Online posting of rumours, giving threats online, posting the victim’s personal information, comments aimed to publicly ridicule a victim is termed as

a. Cyber bullying

b. Cyber crime

c. Cyber insult

d. All of the above

2. Ankit made a ERP - Enterprise resource planning solution for a renowned university and registered and Copyrights for the same. Which of the most important option; Ankit got the copyrights.

a) To get society status

b) To get fame

c) To get community welfare

d) To secure finance protection

3. Which of the following is not an example of Social media platform?

a. Facebook

b. Pinterest

c. Google+

d. Social channel

4. A responsible netizen must abide by

a. Net etiquettes

b. Communication etiquettes

c. Social media etiquettes

d. All of the above

5. A is some lines of malicious code that can copy itself and can have detrimental effect on the computers, by destroying data or corrupting the system.

a. Cyber crime

b. Computer virus

c. Program

d. Software

6. Which of the following activity is an example of leaving Active digital footprints?

a) Surfing internet

b) Visiting a website

c) Sending an email to a friend

d) None of the above

7. You are planning to go for a vacation. You surfed the internet to get answers for following queries.

a) Places to visit

b) Availability of air tickets and fares

c) Best hotel deals

d) All of these

8. Legal term to describe the rights of a creator of original creative or artistic work is called……..

a) Copyright

b) Copyleft

c) GPL

d) BSD

9. Intellectual Property is legally protected through

a) copyright

b) patent

c) registered trademark

d) All of the above

10. includes any visual symbol, word, name, design, slogan, label, etc., that distinguishes the brand from other brands.

a) Trademark

b) Patent

c) Copyright

d) None of the above

11. Gaining unauthorised access to a network or computer aur digital files with malicious intentions, is

called

a. Cracking

b. Hacking

c. Banging

d. Phishing

12. Legal term to describe the rights of a creator of original creative or artistic work is called

a. Copyright

b. Copyleft

c. GPL

d. None of these

13. OSS stands for

a. Open system security

b. Open system source

c. Open software and security

d. Open source software

14. Any fraudulent business practice that extracts money e from an unsuspecting, ignorant person is called

a. Stealing

b. Scam

c. Violation of copyright

d. Digital footprint

15. means no price is to be paid for the software.

a. Free software

b.
Freeware

c. shareware

d. Open source software

16. Any work / information that exist in digital form idea on internet or on an electronic device, is known as property.

a. Licence property

b. digital property

c. source code property

d. software property

17. Discarded electrical or or electronic devices are known as .

a. E waste

b. Software Waste

c. Hardware waste

d. Computer waste

18. The least restrictive open sourcelicence is licence.

a. Apache Licence

b. MIT licence

c. GNU licence

d. BSD licence

19. The original code written by programmers for a software is known as

a. Object code

b. Source code

c. Python code

d. Language code

20. means freedom to use the software.

a. Plagiarism

b. Freeware

c. Open software

d. Free software

21. IAD means

a. Internet advanced data

b. Internet addiction disorder

c. Internet advanced digitalization

d. Internet aggregate data

22. The is the Digital trail of your activity on the internet.

a. Copyleft

b. Digital footprint

c.
Digital data

d. Internet property

23. The the are the permissions given to use a product or someone's creator by the copyright holder.

a. Source code

b. Licence

c. Software authority

d. Digital rights

24. is a licence that gives right opposite to copyright.

a. Left copy

b. Digital copy

c. Copyleft

d. IPR

25. A software that can be freely accessed and modified is called

a. synchronous software

b. package software

c. open source software

d. middleware.

26. Which of the following is an advantage of open source software?

a. You can edit the source code to customise it

b. you need to be an expert to edit code

c. you have to pay

d. can sometimes with two generic for specialist purposes.

27. Which of the following is a disadvantage of open source software?

a. high quality software with lots of features.

b. not as customizable

c. may not have been tested as much as proprietary software so might have bugs.

d. you can added the source code to customize it

28. Which of the following is an advantage of proprietary software?

a. It is usually free

b. thoroughly tested because people are paying to use it.

c. Not as customizable.

d. Can sometimes be to generate for specialist purposes.

29. Which of the following is a disadvantage of proprietary software?

a. You need to be an expert to edit code.

b. You have to pay for this type of software.

c. It’s licensed.

d.
It is launched after proper testing.

30. The generally recognized term for the government protection afforded to intellectual property written

and electronic is called

a. Computer security law.

b. Aggregate information.

c. Copyright law

d. Data security standards.

31. Which of the following would be a creative work protected by copyright?

a. A list of all Indian President names

b. A Portrait of your family

c. A song you wrote

d. The name of your pet dog

32. Which of the following is not done by cyber criminals?

a. Unauthorised account access

b. Mass Attack using trojans as botnets

c. Email spoofing and spamming

d. report vulnerabilty in any system

33. What is the name of the IT law that India is having in the Indian legislature?

a. India's Technology IT Act 2000

b. India's Digital information technology DIT Act, 2000

c. India's Information Technology IT Act, 2000

d. The technology act, 2008.

34. What is meant by the term cybercrime?

a. Any crime that uses computers to jeopardize or attempt to jeoparadise in national security

b. The use of computer networks to commit financial or identity fraud

c. The theft of Digital information

d. Any crime that involves computers and networks

35. Every activity you perform on the internet is safe for how long?

a. 1 month

b. 1 year

c. As per my setting

d. Forever

36. A is an injury or disorder of muscles, nerves, tendons, ligaments and joints.

a. Repetitive Strain injury

b. Muscle injury

c. Nervous breakdown

d.
Joint pain

37. is a technology related health condition affecting eyesight.

a. Computer vision strain

b. Computer vision syndrome

c. Eyesight syndrome

d. Vision imbalance

Saturday, March 14, 2026

Question 1

Questions

Question 2

Questions

Question 3

Questions

Question 4

Questions

Question 5

Questions

Friday, March 13, 2026

📘 Informatics Practices 2026

60 Most Important Questions with Answers

PART 1 – MCQ (1–25)

PART 2 – Very Short Answer Questions (26–50)

PART 3 – Short Answer Questions (51–60)

Thursday, March 12, 2026

Wednesday, March 11, 2026

10 basic SQL queries

RollNo

Name

Class

Marks

City

1

Aisha

12

85

Delhi

2

Rahul

12

72

Mumbai

3

Neha

12

91

Delhi

4

Arjun

12

65

Kolkata

5

Riya

12

88

Mumbai

1. Display All Records

2. Display Only Name and Marks

3. Display Students Scoring More Than 80 Marks

4. Display Students from Delhi

5. Display Students in Descending Order of Marks

6. Count Total Number of Students

7. Find Maximum Marks

8. Find Average Marks

9. Display Students from Mumbai

10. Display Students Whose Name Starts with "R"

Note: Here are some MySQL queries that may be important for the Board Examination 2026. Students are advised to revise these queries carefully before the exam. Additional question sets are currently being prepared and will be published soon.

Wednesday, February 11, 2026