Need Help for CCDA

Hi all,

Due to job demands, I need to certify CCDA pronto! I have CCNA knowledge, I was once CCNA certified and let it expire last year. I am trying to retake my CCNA, I failed it yesterday with a 775. Is there any advice anyone can give as far as what books to study, and those who have taken it what type of questions are focused on the test?

Thanks