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Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 392 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Associate SAA-C03
Question #: 392
Topic #: 1
[All AWS Certified Solutions Architect - Associate SAA-C03 Questions]

A company wants to deploy a new public web application on AWS. The application includes a web server tier that uses Amazon EC2 instances. The application also includes a database tier that uses an Amazon RDS for MySQL DB instance.

The application must be secure and accessible for global customers that have dynamic IP addresses.

How should a solutions architect configure the security groups to meet these requirements?

  • A. Configure the security group for the web servers to allow inbound traffic on port 443 from 0.0.0.0/0. Configure the security group for the DB instance to allow inbound traffic on port 3306 from the security group of the web servers.
  • B. Configure the security group for the web servers to allow inbound traffic on port 443 from the IP addresses of the customers. Configure the security group for the DB instance to allow inbound traffic on port 3306 from the security group of the web servers.
  • C. Configure the security group for the web servers to allow inbound traffic on port 443 from the IP addresses of the customers. Configure the security group for the DB instance to allow inbound traffic on port 3306 from the IP addresses of the customers.
  • D. Configure the security group for the web servers to allow inbound traffic on port 443 from 0.0.0.0/0. Configure the security group for the DB instance to allow inbound traffic on port 3306 from 0.0.0.0/0.
Show Suggested Answer Hide Answer
Suggested Answer: A 🗳️
by [deleted] at March 10, 2023, 4:18 p.m.
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awsgeek75
Highly Voted 8 months ago
Selected Answer: A
"The application must be secure and accessible for global customers that have dynamic IP addresses." This just means "anyone" so BC are wrong as you cannot know in advance about the dynamic IP addresses. D is just opening the DB to the internet. A is most secure as web is open to internet and db is open to web only.
upvoted 5 times
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Bhanu1992
Highly Voted 5 months, 3 weeks ago
The keyword is dynamic IPs from the customer, then B, C out, D out due to 0.0.0.0/0
upvoted 5 times
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Guru4Cloud
Most Recent 1 year ago
Selected Answer: A
It allows HTTPS access from any public IP address, meeting the requirement for global customer access. HTTPS provides encryption for secure communication. And for the database security group, only allowing inbound port 3306 from the web server security group properly restricts access to only the resources that need it.
upvoted 3 times
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jayce5
1 year, 3 months ago
Selected Answer: A
Should be A since the customer IPs are dynamically.
upvoted 1 times
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antropaws
1 year, 3 months ago
Selected Answer: A
A no doubt.
upvoted 2 times
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omoakin
1 year, 3 months ago
BBBBBBBBBBBBBBBBBBBBBB from customers IPs
upvoted 1 times
MostafaWardany
1 year, 3 months ago
Correct answer A, customer dynamic IPs ==>> 443 from 0.0.0.0/0
upvoted 2 times
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TariqKipkemei
1 year, 3 months ago
Selected Answer: A
dynamic source ips = allow all traffic - Configure the security group for the web servers to allow inbound traffic on port 443 from 0.0.0.0/0. Configure the security group for the DB instance to allow inbound traffic on port 3306 from the security group of the web servers.
upvoted 2 times
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elearningtakai
1 year, 5 months ago
Selected Answer: A
If the customers have dynamic IP addresses, option A would be the most appropriate solution for allowing global access while maintaining security.
upvoted 4 times
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Kenzo
1 year, 5 months ago
Correct answer is A. B and C are out. D is out because it is accepting traffic from every where instead of from webservers only
upvoted 4 times
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Grace83
1 year, 6 months ago
A is correct
upvoted 3 times
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WherecanIstart
1 year, 6 months ago
Selected Answer: B
Keyword dynamic ...A is the right answer. If the IP were static and specific, B would be the right answer
upvoted 4 times
pentium75
8 months, 3 weeks ago
Then why voted B?
upvoted 2 times
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boxu03
1 year, 6 months ago
Selected Answer: A
aaaaaaa
upvoted 1 times
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kprakashbehera
1 year, 6 months ago
Selected Answer: A
Ans - A
upvoted 1 times
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[Removed]
1 year, 6 months ago
Selected Answer: A
aaaaaa
upvoted 1 times
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A (35%)
C (25%)
B (20%)
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