Amazon
SOA-C02 · Question #558
A company deploys a new application on three Amazon EC2 instances across three Availability Zones. The company uses a Network Load Balancer (NLB) to route traffic to the EC2 instances. A SysOps…
The correct answer is A. Configure the security group that is associated with the EC2 instances to allow traffic from only. See the full explanation below for the reasoning.
Submitted by mateo_ar· Mar 30, 2026Security and Compliance
Question
A company deploys a new application on three Amazon EC2 instances across three Availability Zones. The company uses a Network Load Balancer (NLB) to route traffic to the EC2 instances. A SysOps administrator must implement a solution so that the EC2 instances allow traffic from only the NLB. What should the SysOps administrator do to meet these requirements with the LEAST operational overhead?
Options
- AConfigure the security group that is associated with the EC2 instances to allow traffic from only
- BConfigure the security group that is associated with the EC2 instances to allow traffic from only
- CCreate a network ACL Associate the network ACL with the application subnets. Configure the
- DUse a third-party firewall solution that is installed on a separate EC2 instance. Configure a firewall
How the community answered
(24 responses)- A83% (20)
- B4% (1)
- C4% (1)
- D8% (2)
Topics
#Security Groups#Network Load Balancer#EC2#Network Security
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