Discuss WGU Cloud Deployment And Operations (D341) Exam Topic 1 Question 16

(An administrator deploys an EC2 instance with the public IP address 54.18.127.233 into a newly created VPC in us-west-2. The EC2 instance must be accessible via ec2-public-54.18.127.233.us-west-2.compute.amazonaws.com from the internet. Which solution should be used?)

AAssign a resource tag to the EC2 instance

BSet the VPC attribute enableDnsHostnames to true

CSet the VPC attribute enableDnsSupport to false

DAssign a resource-based name to the EC2 instance

Suggested Answer: B

Comprehensive and Detailed Explanation From Exact Extract:

To make the EC2 instance accessible via a public DNS hostname like ec2-public-54.18.127.233.us-west-2.compute.amazonaws.com, the administrator must set the VPC attribute enableDnsHostnames to true. This enables the automatic assignment of public DNS hostnames to instances with public IP addresses in the VPC. The WGU Cloud Deployment and Operations Study Guide (Section 3.2, VPC Configuration) states, 'Setting enableDnsHostnames to true in the VPC configuration ensures that EC2 instances with public IPs receive a public DNS hostname (e.g., ec2-public-<ip>.<region>.compute.amazonaws.com), facilitating internet accessibility.' Resource tags, disabling DNS support, and resource-based names do not enable this functionality.</region></ip>

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12 comments · newest first

Luis 1 month ago

Option C is definitely wrong. We need DNS support for public access.

Irving 1 month ago

Agreed! Without enabling DNS hostnames, the instance won't be reachable.

Lorean 1 month ago

I think option B is the best choice. DNS hostnames are crucial for access.

Ceola 2 months ago

Why would anyone set enableDnsSupport to false? That seems odd.

Jillian 2 months ago

Definitely B, no doubt about it!

Nickolas 2 months ago

Wait, can you really access it without DNS support?

Tamar 2 months ago

I think A is important too, but not the main issue here.

Billi 2 months ago

B is the right choice, you need DNS hostnames enabled.

Cristen 2 months ago

I’m a bit confused about the difference between DNS hostnames and DNS support. I think both might be relevant, but I’m leaning towards option B.

France 3 months ago

This question reminds me of a practice exam where we had to configure VPC settings for public access. I feel like option B is the right choice here.

Henriette 3 months ago

I'm not entirely sure, but I remember something about DNS support needing to be enabled for public IPs to resolve correctly.

Ronny 3 months ago

I think we need to enable DNS hostnames for the EC2 instance to be accessible via the public DNS name.

WGU Cloud Deployment and Operations (D341) Exam - Topic 1 Question 16 Discussion