A Company Hosts a Web Application on an Amazon EC2

question 48

Multiple Choice

A company hosts a web application on an Amazon EC2 instance in a production VPC. Client connections to the application are failing. A SysOps administrator inspects the VPC flow logs and finds the following entry: 2 111122223333 eni-<###> 192.0.2.15 203.0.113.56 40711 443 6 1 40 1418530010 1418530070 REJECT OK What is a possible cause of these failed connections?

• A) A security group is denying traffic on port 443.
• B) The EC2 instance is shut down.
• C) The network ACL is blocking HTTPS traffic.
• D) The VPC has no internet gateway attached.