Senior Technology Lead

Senior Technology Lead Interview Questions and Answers

Updated 3 Mar 2025
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Q1. what are all the steps do you follow to prevent from PRD INC

Ans.

Steps to prevent PRD INC

  • Regularly update software and security patches

  • Implement strong access controls and authentication measures

  • Conduct regular security audits and penetration testing

  • Educate employees on cybersecurity best practices

  • Implement data encryption and backup procedures

Q2. How does Laravel prevent SQL Injection?

Ans.

Laravel prevents SQL Injection by using parameter binding and prepared statements.

  • Laravel uses parameter binding to automatically sanitize user input before executing SQL queries.

  • Prepared statements are used to separate SQL code from user input, preventing malicious SQL injection attacks.

  • Eloquent ORM in Laravel also helps prevent SQL injection by automatically escaping input values.

Q3. What is reverse routing in Laravel?

Ans.

Reverse routing in Laravel is the process of generating URLs based on route names.

  • Reverse routing helps in generating URLs dynamically without hardcoding them in the application.

  • It allows developers to easily change the URL structure without affecting the codebase.

  • Example: route('profile') will generate the URL for the 'profile' route.

  • Example: route('user.show', ['id' => 1]) will generate the URL for the 'user.show' route with the parameter 'id'.

Q4. Small output type program implementation

Ans.

Implementing a small output type program involves writing code to achieve a specific task or calculation.

  • Define the problem statement and expected output clearly

  • Choose the appropriate programming language and tools

  • Write the code to perform the required task

  • Test the program with sample inputs to ensure correctness

  • Optimize the code for efficiency if needed

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Q5. What design pattern used

Ans.

The design pattern used is the Singleton pattern.

  • Ensures a class has only one instance and provides a global point of access to it

  • Commonly used in scenarios where only one instance of a class is needed, such as database connections or logging

  • Implemented by creating a static method to return the same instance of the class every time it is called

Q6. Error handling using express

Ans.

Error handling in Express involves using middleware functions to catch and handle errors.

  • Use try-catch blocks in route handlers to catch synchronous errors

  • Use next function in middleware to pass errors to error handling middleware

  • Create a custom error handling middleware to handle errors globally

  • Use status codes and error messages to communicate errors to clients

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