### Q1: What are the three key components that work together in the communication between servers, databases, and applications?  
### Q2: How does the web server interact with the application server when handling client requests?  
### Q3: What is the significance of understanding the data flow in web applications for a back-end developer?  
### Q4: How does the client-server model enhance the efficiency of web applications in the finance industry?  
### Q5: In what ways can knowledge of the client-server model influence the design of a fintech application?  
### Q6: How can understanding data flow help in optimizing the performance of a web application?  
### Q7: How would you describe the interaction between a client and a server using a real-world analogy?  
### Q8: Can you explain the role of the database in the client-server model with an example from online banking?  
### Q9: How can effective communication skills aid in explaining complex technical concepts to non-technical stakeholders?