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Exam AWS-SysOps topic 1 question 732 discussion

Exam question from Amazon's AWS-SysOps
Question #: 732
Topic #: 1
[All AWS-SysOps Questions]

A company uses multiple accounts for its applications. Account A manages the company's Amazon Route 53 domains and hosted zones. Account B uses a load balancer fronting the company's web servers.
How can the company use Route 53 to point to the load balancer in the MOST cost-effective and efficient manner?

  • A. Create an Amazon EC2 proxy in Account A that forwards requests to Account B.
  • B. Create a load balancer in Account A that points to the load balancer in Account B.
  • C. Create a CNAME record in Account A pointing to an alias record for the load balancer in Account B.
  • D. Create an alias record in Account A pointing to the DNS name for the load balancer in Account B.
Show Suggested Answer Hide Answer
Suggested Answer: D 🗳️
Reference:
https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/routing-to-elb-load-balancer.html
by MrKhan at June 2, 2020, 6:19 p.m.
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waterzhong
Highly Voted 2 years, 6 months ago
D Alias records are best used for routing to an AWS Resource As a good reminder: A record = URL to IPv4 AAAA record = URL to IPv6 CNAME record = URL to URL (All the same, one url = Many URL's) Alias record = AWS service
upvoted 12 times
billcayman
2 years, 6 months ago
Good reminder, thank you.
upvoted 3 times
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albert_kuo
Most Recent 9 months, 1 week ago
Selected Answer: D
By creating an alias record in Account A that points directly to the DNS name of the load balancer in Account B, you can achieve efficient and cost-effective routing. This method leverages Route 53's alias functionality, which allows you to create a DNS record that behaves like a CNAME record but has the performance benefits of an A record.
upvoted 1 times
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RicardoD
2 years, 5 months ago
D is the answer create an ALIAS record in account A that points do to ALB on Account B
upvoted 2 times
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Kimle
2 years, 5 months ago
it's C .. you can't have alias record in your account to point at a service in other account , so CNAME in account A will point to Alias in account B which can point to a service "ALB"
upvoted 1 times
Kimle
2 years, 5 months ago
Sorry it's D , as kopper2019 mentioned below article is useful https://stackoverflow.com/questions/35928471/cross-account-alias-records
upvoted 1 times
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abhishek_m_86
2 years, 6 months ago
D. Create an alias record in Account A pointing to the load balancer in Account B. Seem correct
upvoted 3 times
Kimle
2 years, 5 months ago
it's C .. you can't have alias record in your account to point at a service in other account , so CNAME in account A will point to Alias in account B which can point to a service "ALB"
upvoted 1 times
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jackdryan
2 years, 6 months ago
I'll go with D
upvoted 1 times
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allsitesmember
2 years, 6 months ago
repeated
upvoted 1 times
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kopper2019
2 years, 6 months ago
D is correct https://stackoverflow.com/questions/35928471/cross-account-alias-records
upvoted 2 times
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rewiga
2 years, 6 months ago
I think it is C, The main point is that the resource is in a different account. I don't think you can create an alias record for a resource not in your account.
upvoted 3 times
jaribu
2 years, 6 months ago
CNAME — Canonical name The fully qualified domain name (for example, www.example.com) that you want Route 53 to return in response to DNS queries for this record. A trailing dot is optional; Route 53 assumes that the domain name is fully qualified. This means that Route 53 treats www.example.com (without a trailing dot) and www.example.com. (with a trailing dot) as identical.
upvoted 2 times
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hnmurugan
2 years, 6 months ago
D. Specific URL - https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/resource-record-sets-values-alias.html
upvoted 1 times
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exbash
2 years, 7 months ago
D. https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/routing-to-elb-load-balancer.html
upvoted 1 times
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MrKhan
2 years, 7 months ago
C, CNAME is required to point to the load balance.
upvoted 2 times
AWSum1
2 years, 6 months ago
D Alias records are best used for routing to an AWS Resource As a good reminder: A record = URL to IPv4 AAAA record = URL to IPv6 CNAME record = URL to URL (All the same, one url = Many URL's) Alias record = AWS service
upvoted 17 times
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