Which version of OEM is Oracle DBO testing?

[CloverFam]

Does anyone who recently took the Oracle DBO test know which version of the Oracle Enterprise Manager is being tested? I have a "prep book" that is based on an older version of OEM, but I imanigne that Oracle has updated by now. I tried to check the Oracle site, but the PDF for DBO exam is "damaged".

[pando]

I think DBO is based on 1.6 and Internet Database Operator is based on 2.0 upwards