Oracle Cloud Infrastructure 2019 Developer Associate — Question 146

Which two statements define the types of DNS resolvers that exist? (Choose two.)

Answer options

• A. A custom resolver allows instances to use the host names of the hosts in your on-prem network that are connected to your VCN by an IPSec VPN connection.
• B. A VCN resolver allows instances to use the host names of the hosts in your on-prem network that are connected to your VCN by an IPSec VPN connection.
• C. A VCN resolver allows instances to use host names to communicate with instances on other VCNs in your tenancy.
• D. An Internet resolver allows instances to use the host names that are published on the Internet.

Correct answer: A, D

Explanation

The correct answers are A and D because a custom resolver and an Internet resolver serve specific purposes in DNS resolution. Option A correctly describes a custom resolver's ability to resolve host names in an on-prem network connected via IPSec, while option D accurately defines an Internet resolver's role in resolving publicly available host names. Options B and C incorrectly describe the functionality of VCN resolvers, which do not encompass the same capabilities as the correct answers.