I have tried to download the ISO from the link provided in exam manual but the ISO seems corrupted.
I have contacted support via chat and they gave me different ISO image from August 2020.
This ISO seem to work but the MD5 checksum does not match:
MD5 hash of C:\Users\user\Downloads\rhrexboot-2020-08.iso
ba35acb890b5bf828b8dba8049d43706
Please help me as my exam is tomorrow. I am no longer able to contact support now to get any advice.