Questions 64 and 65

Explanations for questions 64 and 65

We'll cover the following

Question 64

You are planning to deploy a number of EC2 instances in your VPC. The EC2 instances will be deployed across several subnets and multiple AZs. Which AWS feature can act as an instance-level firewall to control traffic between your EC2 instances?

  1. AWS WAF
  2. Security group
  3. Route table
  4. Network ACL

Correct Answer: 2

Explanation: A security group acts as a virtual firewall for your instance to control inbound and outbound traffic. When you launch an instance in a VPC, you can assign up to five security groups to the instance. Security groups act at the instance level, not the subnet level. Therefore, each instance in a subnet in your VPC can be assigned to a different set of security groups.

INCORRECT:AWS WAF” is incorrect. AWS WAF is a web application firewall and does not work at the instance level.

CORRECT: “Security group” is the correct answer.

INCORRECT:Route table” is incorrect. Route tables are not firewalls.

INCORRECT:Network ACL” is incorrect. Network ACLs function at the subnet level.


Level up your interview prep. Join Educative to access 70+ hands-on prep courses.