Capgemini Senior Engineering Lead Interview Questions and Answers

Binary search algorithm efficiently finds the target value in a sorted array.

• Divide the array in half and compare the target value with the middle element.

• If the target value is smaller, search the left half. If larger, search the right half.

• Repeat the process until the target value is found or the subarray is empty.

Database optimization involves improving the performance of a database system by reducing response time and resource consumption.

• Identify and eliminate redundant data

• Index frequently queried columns

• Normalize database schema

• Optimize queries by using appropriate joins and filters

• Use caching mechanisms to reduce database load

Use input validation, output encoding, and proper escaping to prevent XSS attacks.

• Sanitize user input by validating and filtering all input data.

• Encode output data to prevent malicious scripts from being executed.

• Escape special characters in user input before displaying it on the website.

• Implement Content Security Policy (CSP) to restrict the sources of content that can be loaded on your website.