It's called Cambridge IELTS Practice Testbank. It used to came with the purchase of digital product from the cambridge website. They have shut it down permanently. You can now prepare on 'IELTS Ready Premium' if you book your test via British Council and access upto 40 tests for FREE.

I have a question, do we get extra time at the end of listening test to check the all answers

In computer based test, you write answers directly on the given spaces as you proceed in the test. At the end of the recordings for each section, you usually get 30 seconds to check your answers of that section. And at the end of the listening test, you get 2-3 minutes to review/edit your answers.

@@knowledgeislandbybilal thankyou for you rply