Oracle Cloud Infrastructure 2019 Developer Associate — Question 33

You have created a public subnet and an internet gateway in your virtual cloud network (VCN). The public subnet has an associated route table and security list.
However, after creating several compute instances in the public subnet, none can reach the Internet.
Which two are possible reasons for the connectivity issue? (Choose two.)

Answer options

• A. The route table has no default route for routing traffic to the internet gateway
• B. There is no stateful egress rule in the security list associated with the public subnet
• C. There is no dynamic routing gateway (DRG) associated with the VCN
• D. There is no stateful ingress rule in the security list associated with the public subnet

Correct answer: A, C

Explanation

Option A is correct because the route table must have a default route to allow traffic to the internet gateway. Option C is also correct as the absence of a dynamic routing gateway (DRG) can affect connectivity. Options B and D are incorrect; while egress and ingress rules are important for traffic control, the primary issues preventing internet access are related to the route table and DRG.