Could not find prescribed CDH version

CCA175 is a hands-on, practical exam using Cloudera technologies. Each user is given their own CDH5 (currently 5.3.2) - I could not find CDH 5.3.2, could only find - QuickStarts for CDH 5.8 from cloudera site. But would not it be better if we could practice in CDH 5.3.2? Any help is highly appreciated. Thanks.