Deutsche Telekom Software Development Engineer In Test SDET interview questions

1)Why do we use Webdriver driver=new ChromeDriver(); in our framework instead of ChromeDriver driver=new ChromeDriver(); ? 2) _______=findElements(By>Xpath("*****"); in this statement what should come on the left side? 3)find the frequency of element occurrence in an int array. for ex- int arr[]={1,1,1,2,2,2,4,3,4,3,5,6}; 4)find each element is palindrome or not in an String array? 5)Debugging Techniques 6)framework flow 7)how to execute some particular test case in your framework?