Oracle Cloud Infrastructure 2019 Developer Associate — Question 140

Which two statements are true about data guard service on DB Systems in Oracle Cloud Infrastructure (OCI)? (Choose two.)

Answer options

• A. Data guard implementation requires two DB Systems, one running the primary database on a virtual machine and the standby database running on bare metal.
• B. Data guard implementation requires two DB Systems, one containing the primary database and one containing the standby database.
• C. Data guard configuration on the OCI is limited to a virtual machine only.
• D. Both DB Systems must use the same VCN, and port 1521 must be open.

Correct answer: B, D

Explanation

Option B is correct because data guard requires a primary and a standby DB System for proper operation. Option D is also correct as both DB Systems must be within the same VCN and have port 1521 open for communication. Options A and C are incorrect since data guard can operate between two DB Systems regardless of whether they are virtual machines or bare metal, and it is not limited to virtual machines only.