HCLTech Senior Technical Lead Interview Questions, Process, and Tips

AWS Lambda is a serverless computing service that runs your code in response to events and automatically manages the underlying compute resources.

• AWS Lambda allows you to run code without provisioning or managing servers.

• It supports multiple programming languages including Node.js, Python, Java, and C#.

• You only pay for the compute time that you consume, with no upfront costs.

• Lambda can be used for a variety of use case...read more

Primary key uniquely identifies a record in a table, while unique key ensures that all values in a column are distinct.

• Primary key can't have null values, while unique key can have one null value.

• A table can have only one primary key, but multiple unique keys.

• Primary key is automatically indexed, while unique key may or may not be indexed.

API Testing: Understanding different http requests and error codes

• GET request is used to retrieve data from the server

• POST request is used to submit data to the server

• PUT request is used to update existing data on the server

• PATCH request is used to partially update existing data on the server

• HTTP error codes indicate the status of the request/response

• 200 OK - successful request

• 400 Bad Request - invalid request

• 401 Unaut...read more

An automation framework is a set of guidelines, standards, and best practices for automating software testing.

• It provides a structure for organizing test scripts and test data

• It allows for easy maintenance and scalability of automated tests

• It should support multiple technologies and platforms

• It should have reporting and logging capabilities

• Examples include Selenium, Appium, and Robot Framework

A program on string manipulation and operations.

• String concatenation using '+' operator

• String length using 'length()' method

• Substring extraction using 'substring()' method

• String comparison using 'equals()' method

• String search using 'indexOf()' method

Static functions are functions that belong to a class rather than an instance of the class.

• Static functions can be called without creating an instance of the class.

• They are often used for utility functions that don't require access to instance variables.

• Static functions can be accessed using the class name followed by the function name.

• Example: Math.max() is a static function in the Math class that returns the maximum ...read more