Hi

well my answers are as below.

Hash Partitiion, was it introduced in oracle 8i or 9i ... practice question picks 9i?

Hash partitioning was introduced in 8i.
List Partitioning was introduced in 9i


b)
Guaranteed Protection

Basically, this is the “no data divergence” mode, and is therefore the strictest mode in which to operate Data Guard. It, of course, guarantees that the Standby is able to be brought into complete synchronism with the primary database, and therefore also implies that in the event of the primary database dying, there is absolutely no data loss.

so self test is correct

the other one i dont have any idea.sorry.

regards
Hrishy