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Exam AWS Certified SysOps Administrator - Associate topic 1 question 88 discussion

Exam question from Amazon's AWS Certified SysOps Administrator - Associate
Question #: 88
Topic #: 1
[All AWS Certified SysOps Administrator - Associate Questions]

A company's application is hosted by an internet provider at app.example.com. The company wants to access the application by using www.company.com, which the company owns and manages with Amazon Route 53.
Which Route 53 record should be created to address this?

  • A. A record
  • B. Alias record
  • C. CNAME record
  • D. Pointer (PTR) record
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Suggested Answer: C 🗳️
by kati2k22cz at Sept. 4, 2022, 3:07 p.m.
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kati2k22cz
Highly Voted 1 year, 9 months ago
C is correct. "A CNAME record can redirect DNS queries to any DNS record. For example, you can create a CNAME record that redirects queries from acme.example.com to zenith.example.com or to acme.example.org. " https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/resource-record-sets-choosing-alias-non-alias.html
upvoted 5 times
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OlehKom
Most Recent 2 days, 3 hours ago
Selected Answer: C
A record: Domain → IP address Alias record: Domain → AWS resource CNAME record: Domain → Another domain PTR record: IP address → Domain (reverse lookup)
upvoted 1 times
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stoy123
3 months, 2 weeks ago
Selected Answer: B
B: Alias! It does the same as CNAME, it's cheaper and always preferred by AWS ;)
upvoted 1 times
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james2033
3 months, 2 weeks ago
Selected Answer: C
It is CNAME for www , not just on AWS Route 53, for all DNS domain name servers in the world. See screenshot https://gist.github.com/assets/1328316/b8cc838c-3821-457e-aefc-b3e0f70c8937 .
upvoted 1 times
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jipark
10 months ago
Selected Answer: C
why not B : - CNAME : hostname redirect to DNS - Alias : hostname redirect to ARN
upvoted 2 times
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hexie
1 year ago
Selected Answer: C
By what I understood, the website is hosted OUTSIDE AWS. Alias records arent more suitable when mapping AWS resources to another? Like mapping an ALB to Route 53 alias.. Plus its changing the root domain from example to company. Im going for CNAME.
upvoted 1 times
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braveheart22
1 year, 3 months ago
C is the right way to go. https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/resource-record-sets-choosing-alias-non-alias.html
upvoted 2 times
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dasadanan
1 year, 4 months ago
Selected Answer: C
I think the correct answer is c. You should never use a CNAME record for your root domain name (e.g. example.com). https://support.dnsimple.com/articles/differences-between-a-cname-alias-url/
upvoted 2 times
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squeeze_talus0y
1 year, 5 months ago
Selected Answer: B
If company.com is hosted in Route53 then Alias record can also be used. https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/resource-record-sets-choosing-alias-non-alias.html#resource-record-sets-choosing-alias-non-alias-comparison Alias records An alias record can only redirect queries to selected AWS resources, such as the following: Amazon S3 buckets CloudFront distributions Another record in the same Route 53 hosted zone For example, you can create an alias record named acme.example.com that redirects queries to an Amazon S3 bucket that is also named acme.example.com. You can also create an acme.example.com alias record that redirects queries to a record named zenith.example.com in the example.com hosted zone.
upvoted 2 times
Spike2020
1 year, 5 months ago
This website is hosted outside of AWS. It cannot be an alias.
upvoted 3 times
Gomer
1 year, 1 month ago
app.example.com is hosted outside of AWS, but the company.com domain is hosted by Route 53. Why can't the www.company.com alias record point to any external domain? I'm not expert in DNS or Route 53, but it seems that if "company.com" is hosted by Route 53, the "www" record in Route 53 for that domain could be redirected (pointed) to anything with an alias (including cnn.com). I don't have to own a file to be able to create a link to it (even if I don't have rights to the file).
upvoted 1 times
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BugsBunny9998666
1 year, 6 months ago
Selected Answer: C
URL to URL is CNAME. probably the only question in a whole sys ops where answer is CNAME
upvoted 4 times
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michaldavid
1 year, 6 months ago
Selected Answer: C
ccccccccc
upvoted 1 times
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Liongeek
1 year, 7 months ago
Ans: C
upvoted 1 times
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