PGT Computer Science Teacher Interview – 30 Important Questions

What is Object-Oriented Programming? Explain encapsulation, abstraction, inheritance and polymorphism with examples.
What is the difference between class and object? Give a practical example.
Explain method overloading and method overriding. How are they different?
What is the difference between compiler, interpreter and assembler?
What is the difference between procedural programming and object-oriented programming?
What is the difference between stack and heap memory?
What is recursion? What are its advantages and disadvantages? Give a practical programming example.
Explain linear and non-linear data structures with suitable examples.
What is the difference between an array, linked list, stack and queue?
What is time complexity? Explain Big-O notation with a simple example.

What is a DBMS and RDBMS? How are they different?
Explain primary key, foreign key, candidate key and composite key.
What is normalization? Explain 1NF, 2NF and 3NF with examples.
What is the difference between WHERE and HAVING in SQL?
Explain different types of SQL JOINs with examples.
What is the difference between DELETE, DROP and TRUNCATE?
What is referential integrity? Why is it important in a relational database?

What is the difference between a process and a thread?
What is deadlock? Explain its four necessary conditions.
Explain the OSI model and the function of each layer.
What is the difference between TCP and UDP? Give real-world applications of both.
Explain IP address, MAC address, DNS and DHCP.
What is the difference between LAN, MAN and WAN?
What is the difference between HTTP and HTTPS? How does HTTPS provide security?

What is cyber security? Explain common threats such as phishing, malware, ransomware and DDoS attacks.
How would you teach students about responsible use of AI tools such as ChatGPT?
What is Artificial Intelligence, Machine Learning and Generative AI? How are they different?
What are the major ethical concerns related to AI in education?

A student can write programs by memorising syntax but cannot solve a new problem. How would you improve the student's computational thinking and problem-solving ability?
How would you design a practical Computer Science lesson for a mixed-ability PGT classroom so that both weak and advanced students remain engaged?

TGT Computer Science Teacher Interview – 30 Important Questions

What is an algorithm? How is it different from a flowchart?
What are the basic components of a flowchart?
What is a variable? What is the difference between a variable and a constant?
Explain conditional statements and loops with simple examples.
What is the difference between a syntax error, logical error and runtime error?
What is a function? Why do we use functions in programming?
How would you explain arrays/lists to a beginner?
What is debugging and why is it important in programming?

What is a cyber attack? Give some common examples.
What is phishing and how can students protect themselves from it?
What is a strong password? Should students use the same password for every account?
What is a digital footprint? Why should school students be concerned about it?

How would you explain programming to students who are completely new to Computer Science?
How would you teach loops or recursion using real-life examples?
What would you do if some students finish a programming task very quickly while others are unable to write even the basic code?
If students are using AI to complete their programming assignments, how would you ensure that they are actually learning rather than simply copying AI-generated code?