Could you give examples of some of the open ended questions that you mention? Like that we can have a better idea and mention maybe some books to help with that.
For which technologies is it?
For which technologies is it?
How would you design an online shopping application like Amazon?
I get stumped with such questions because I don't understand where to start and which direction to take. In the previous interview I started with a high level technology stack I would use and then how the front end, middleware and database would be organized. They happened to be more interested in the Object modelling. I missed that.
In the recent interview I started with Object modelling, but they said they were interested in a high level tech stack I would go for and the reasons for each.
This makes me go a bit blank during interviews and I panic, blurting out 'Sorries' and 'I can't recollect it at this moment'.
By going to more interviews you will get much better at it. Try to go to the next one as soon as possible. Remember that for each person hired there where maybe 3 othercandidates that didnt make it so its normal.
Remember that there are many factors completely out of your control, but if you insist and lesrn from mistakes you will go through in the end.