A start-up firm has configured an Amazon S3 bucket as a static website with a DNS registered name as test.com.
For an appropriate record to be created in Amazon Route 53, the deployment team is seeking your advice.
Also, they are looking for TTL values that can be set for these records. Which of the following can be used for the creation of records within Amazon Route 53?
Click on the arrows to vote for the correct answer
A. B. C. D.Correct Answer: D.
Alias records can be used to map a DNS record test.com to the Amazon S3 bucket static website.
With Alias records, custom TTL values cannot be set.
Only default TTL values are used.
Option A is incorrect as with Alias record, a custom TTL value cannot be set.
Route 53 uses default TTL values for the resource.
Options B and C are incorrect as CNAME record cannot be used for apex records, i.e., for test.com.
For more information on Apex records with Amazon Route 53, refer to the following URLs,
https://aws.amazon.com/route53/faqs/ https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/resource-record-sets-choosing-alias-non-alias.htmlSure, I'd be happy to help explain this question!
The question is asking about how to configure DNS records in Amazon Route 53 to point to an Amazon S3 bucket that has been set up as a static website with a registered DNS name of test.com. Let's break down the answer options:
A. Create an Alias record for the domain name test.com with custom TTL values.
An Alias record in Route 53 is a special type of DNS record that allows you to map a domain name (in this case, test.com) to an AWS resource, such as an S3 bucket or an EC2 instance. This option suggests creating an Alias record for test.com with custom TTL (Time to Live) values. TTL is the amount of time a DNS resolver should cache a DNS record before querying the authoritative DNS server again. Custom TTL values would allow the deployment team to specify how long DNS resolvers should cache the Alias record for test.com before checking for updates. This option could work, so let's keep it in mind.
B. Create CNAME records for the domain name test.com with default TTL values.
A CNAME record in DNS is a type of record that maps one domain name to another. This option suggests creating CNAME records for test.com with default TTL values. However, CNAME records cannot be used for the root domain (test.com) because it violates a DNS specification. In other words, you cannot create a CNAME record for the domain apex (root) because it would create a conflict with other DNS records that are required to function properly. Therefore, this option is incorrect.
C. Create CNAME records for the domain name test.com with custom TTL values.
This option is similar to Option B, but with the addition of custom TTL values. As explained above, creating a CNAME record for the root domain is not possible. Therefore, this option is incorrect.
D. Create an Alias record for the domain name test.com with default TTL values.
This option is similar to Option A, but with default TTL values. This means that DNS resolvers would cache the Alias record for the default amount of time, which is determined by the DNS resolver's settings. This option is technically correct, but it may not be the best solution depending on the deployment team's requirements for TTL.
In conclusion, the best answer for this question is A. Create an Alias record for the domain name test.com with custom TTL values. This option allows the deployment team to create an Alias record for test.com that points to the S3 bucket, with the ability to specify how long DNS resolvers should cache the record before checking for updates.