SAP-C02 Exam - Question 10

Question

A retail company is operating its ecommerce application on AWS. The application runs on Amazon EC2 instances behind an Application Load Balancer (ALB). The company uses an Amazon RDS DB instance as the database backend. Amazon CloudFront is configured with one origin that points to the ALB. Static content is cached. Amazon Route 53 is used to host all public zones.

After an update of the application, the ALB occasionally returns a 502 status code (Bad Gateway) error. The root cause is malformed HTTP headers that are returned to the ALB. The webpage returns successfully when a solutions architect reloads the webpage immediately after the error occurs.

While the company is working on the problem, the solutions architect needs to provide a custom error page instead of the standard ALB error page to visitors.

Which combination of steps will meet this requirement with the LEAST amount of operational overhead? (Choose two.)

Examice · Accepted Answer

To provide a custom error page instead of the standard ALB error page with the least operational overhead, two steps are necessary. First, create an Amazon S3 bucket to host a static webpage and upload the custom error pages to that S3 bucket. This allows for a highly-available location to store the error pages. Second, configure a CloudFront custom error page to handle the custom error responses effectively. This setup leverages existing services with minimal additional configuration, offering an efficient and scalable solution without the need for complex DNS changes or handling custom code for each error.

Raj40 · Answer

A & E
https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/GeneratingCustomErrorResponses.html#custom-error-pages-procedure

atirado · Answer

Option A - This option helps: Allows exposing custom error pages from a highly-available location

Option B - This option requires a lot of set up

Option C - This option might not work because modifying DNS will redirect all traffic publicly accessible webpage

Option D - This option requires a lot of set up

Option E - This option helps: Shows a custom error page when the error occurs

Sarutobi · Answer

We need a combination, so A provides the error page; should we go with DNS health-check (C+A) or CloudFront (E+A)? In my case, I try to stick to a single service to do failover, and DNS is a great option, but it looks like, in this question, CloudFront is already present with the least-operational overhead.

kz407 · Answer

The only problem with E is that it say "Modify DNS records to point to a publicly accessible web page" at the end. It doesn't make sense to begin with. And configuring custom error responses in CF has nothing to do with DNS anyway.

cattle_rei · Answer

AE because it accomplishes the task and is the least complex.

bur4an · Answer

Agree with Raj40

rtguru · Answer

Correct answer is A&E

Parimal1983 · Answer

Custom error pages need to setup in different location then source (where web pages is hosted), configure CloudFront to use those custom error pages

NikkyDicky · Answer

AE is right

dimitry_khan_arc · Answer

C & E.
B & D are incorrect. Managing lambda is overhead.
A is incorrect. Static page from S3 need to retrieve with custom code.

severlight · Answer

I haven't found out why should we use C.

abeb · Answer

should be AE

azhar3128 · Answer

I think it is wordplay. Option A says to upload "error pages", which will be an overhead for creating a page for each error and unnecessary. that's where C & E are correct

MoT0ne · Answer

I think why is not A is because of this sentence - "The webpage returns successfully when a solutions architect reloads the webpage immediately after the error occurs." - so let's not think it as requiring a maintenance page

iulian0585 · Answer

A and E according to AWS documentation: https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/GeneratingCustomErrorResponses.html#custom-error-pages-procedur

roger8t8 · Answer

A & E 
https://aws.amazon.com/blogs/aws/custom-error-pages-and-responses-for-amazon-cloudfront/

agatim · Answer

Option A - Allow us to expose a error page with low effort.
Option B - Requires a lot of set up
Option C - Allow us to redirect all the traffic to our error page exposed by S3 in case of errors.
Option D - requires a lot of set up
Option E - Custom Error Pages in CloudFront refers to the same Origin (in our case the Load Balancer) so it does not work with all the other answers.

So correct answer are A and C

SAP-C02 Exam - Question 10

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