There were 3 rounds total.

1st round:

Few questions about XPath, string manipulation, types of waits in Selenium, and exceptions in Selenium.

2nd round:

Web services questions, questions on Rest Assured framework, questions on XPath, a string question (how to count repeated words in a given string), lambda expressions, and how to take a screenshot in Selenium.

3rd round: Quite a bit difficult.

Web services architecture, HTTP protocol, session IDs, cookies, cache, Selenium architecture, how Selenium works independent of the environment, different response codes in web services, the "1 chocolate, 3 wrappers" question, and printing words of a string in reverse order.

How to find the XPath of column2 from column1.

How to replace "cal" with "hyd" in a given string, "calchen cal", without using String.replace().