CBSE Class 12 IP Viva: Important Questions You Must Know

The CBSE Class 12 Informatics Practices (IP) viva plays a crucial role in assessing a student’s understanding of practical concepts. To score well, students need to be prepared with theoretical knowledge, coding concepts, and real-world applications of Informatics Practices topics. This blog post will highlight some of the most important viva questions that can help you prepare effectively for your exam.

Key Topics Covered in Viva for CBSE Class 12 IP:

1. Data Handling Using Pandas and NumPy
2. Database Query Using SQL
3. Data Visualization Using Matplotlib
4. Cyber Security
5. Networking Concepts

Here is a breakdown of some important viva questions for each topic.

1. Data Handling Using Pandas and NumPy

Data handling and manipulation using Python libraries like Pandas and NumPy are at the core of CBSE Class 12 IP. You are likely to be asked about creating data frames, performing operations on data, and understanding basic functions of these libraries.

Possible Questions:

• What is a DataFrame in Pandas? How is it different from a NumPy array?
• How can you create a DataFrame in Python using Pandas?
• Write a Python command to delete a column from a DataFrame.
• What is the use of the iloc[] and loc[] functions in Pandas?
• How do you handle missing data in a DataFrame?
• How do you apply aggregate functions like sum(), mean(), or count() on a DataFrame?

2. Database Query Using SQL

SQL queries are essential in working with databases. You might be asked about creating databases, running queries, or manipulating data in tables.

Possible Questions:

• What is SQL? Explain its uses.
• Write the SQL query to create a new table.
• What is the difference between DELETE, TRUNCATE, and DROP in SQL?
• How do you retrieve specific columns from a table in SQL?
• Explain the use of JOIN in SQL. Provide an example.
• How do you implement group by and order by in SQL?

3. Data Visualization Using Matplotlib

Data visualization is essential for analyzing and interpreting data. You might be asked to demonstrate basic visualizations using Matplotlib in Python.

Possible Questions:

• What is Matplotlib? What are its main uses?
• Write a Python command to create a bar chart using Matplotlib.
• How can you create a line plot with Matplotlib?
• How do you label the x-axis and y-axis in a Matplotlib plot?
• Explain the role of plt.show() in Matplotlib.

4. Cyber Security

Cyber security questions are becoming increasingly important in the CBSE syllabus, with an emphasis on basic concepts of online safety and data protection.

Possible Questions:

• What is cyber security? Why is it important?
• What are phishing and malware attacks?
• Explain the difference between a virus and a worm.
• What is a firewall? How does it protect a network?
• What are strong passwords, and why are they important?

5. Networking Concepts

Networking concepts focus on understanding the basic structure of the internet and networks, which can be crucial during your viva.

Possible Questions:

• What is a computer network? Explain its types.
• What is the difference between LAN, MAN, and WAN?
• What is IP address? Differentiate between IPv4 and IPv6.
• What is DNS, and what role does it play in the internet?
• What are protocols, and why are they important in networking?

Final Tips for Preparing for Viva:

1. Revise the Basics: Make sure you are clear with the fundamental concepts of each topic. Brush up on coding syntax and SQL queries.
2. Practice Code: Be comfortable in writing and explaining Python code on the spot, especially regarding data handling and visualization.
3. Be Confident: Answer confidently even if you’re unsure. Try explaining your thought process to show your understanding.
4. Time Management: Be concise and to the point in your answers. Time is limited in a viva, so don’t over-explain.
5. Know Your Project: If your viva involves discussing a project, make sure you understand the code, the logic, and the tools you’ve used in your project thoroughly.

Conclusion

Being prepared for your CBSE Class 12 IP viva is essential to score well in your practical exams. Practice coding, revise your notes, and focus on the key questions outlined above to excel in your viva. Remember, clarity of concepts and confidence in your answers is key to performing well.