NUMBER OF ATTEMPTS - You are allowed two attempts to get certified in this chapter. However, there needs to be a gap of 15 days between the 2 attempts. Once you start the test, it will be counted as an attempt even if you don't submit it.
VALIDITY - You need to complete your 2 attempts within 6 months of paying the fees.
CERTIFICATE - For qualifying scores, the downloadable certificate is issued instantly on submission. It will also be emailed to you.