AWS Solutions Architect Associate Practice Test

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How can the domain's zone apex be pointed towards an Elastic Load Balancer?

By using an Amazon Route 53 Alias record
By using an AAAA record
By using an Amazon Route 53 CNAME record
By using an A record

The correct answer is: By using an Amazon Route 53 Alias record

Pointing a domain's zone apex to an Elastic Load Balancer (ELB) can be effectively done using an Amazon Route 53 Alias record. The zone apex, also known as the root domain (e.g., example.com), requires a record type that can point directly to resources like ELBs without the limitations of traditional DNS records. An Alias record in Route 53 allows you to map the zone apex directly to the ELB. This is beneficial because Alias records do not require a dedicated IP address; instead, they can point to AWS resources like ELBs, CloudFront distributions, S3 buckets, and more. Additionally, Alias records can be used at the root domain level, which standard CNAME records cannot do since CNAME records are not allowed at the zone apex. The use of AAAA records is specifically meant for pointing to IPv6 addresses, and while they are essential in some contexts, they do not facilitate pointing to AWS resources like ELBs. A standard A record can technically point to an IP address, but since ELBs are dynamic and do not have fixed IP addresses, this method is not suitable for this purpose within the AWS ecosystem. CNAME records, while they can direct traffic to a domain within the DNS system,