Selenium webdriver interview questions

How to navigate between frames
Navigation between two window frames
Javascript Calendar validation
Select the dynamic elements using dynamic xpath
How to diff between Firefox chrome internet explore browser testing using webdriver
how to execute JavaScript using web driver
Implicit and explicit wait
Difference between selenium RC and webdriver
Use of selenium Grid
How to handle pop ups
How to select element with same of in two different places
How to test password
Data driven and keyword driven architecture

Algorithm coding interview questions

Following should be prepared before preparing interview for product/development base companies

Implement stack
Implementation of queue
Linked list implementation
Stack and queue implementation using linked list
Tree and binary tree implementation
Double linked list
Merge and quick sort
String operations
Arrays rotation
Search for integers in collection
Min, max and sum of elements