Below are some of the important interview questions related to frameworks especially Testng:-
Which framework do you use in Automation?
What all the annotation you have used with TestNG?
From where you have store xpaths if in excel then how u have read excel data in ur test class?
How u have used TestNG as a reporting tool?
How U can run only 3 test cases out of 5 using testng annotations?
Explain what is parametric testing?
How TestNG is better than Junit?
Explain what is Group Test in TestNG?
Explain how you can execute tests case using TestNG?
How can we run test cases in parallel using TestNG?
How can we disable or prevent a test case from running?
Can u please explain the structure of Pom.xml?
If you want to get a decent job in the field of Selenium then you must have a look at the following Selenium training course. You can also watch the video tutorial on Selenium to clear all your doubts regarding it.