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Exam AWS Certified SysOps Administrator - Associate topic 1 question 50 discussion

Exam question from Amazon's AWS Certified SysOps Administrator - Associate
Question #: 50
Topic #: 1
[All AWS Certified SysOps Administrator - Associate Questions]

A SysOps administrator is investigating why a user has been unable to use RDP to connect over the internet from their home computer to a bastion server running on an Amazon EC2 Windows instance.
Which of the following are possible causes of this issue? (Choose two.)

  • A. A network ACL associated with the bastion's subnet is blocking the network traffic.
  • B. The instance does not have a private IP address.
  • C. The route table associated with the bastion's subnet does not have a route to the internet gateway.
  • D. The security group for the instance does not have an inbound rule on port 22.
  • E. The security group for the instance does not have an outbound rule on port 3389.
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Suggested Answer: AC 🗳️
by haxaffee at Sept. 3, 2022, 7:31 p.m.
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haxaffee
Highly Voted 2 years, 2 months ago
Selected Answer: AC
Correct.
upvoted 8 times
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Geek20
Most Recent 6 months, 1 week ago
A&C are correct
upvoted 1 times
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jipark
1 year, 2 months ago
Selected Answer: AC
not D : RDP uses port 3389
upvoted 2 times
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fazlur21
1 year, 4 months ago
ac correct
upvoted 1 times
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MrMLB
1 year, 10 months ago
The possible causes of this issue are: A. A network ACL associated with the bastion's subnet is blocking the network traffic. C. The route table associated with the bastion's subnet does not have a route to the internet gateway. E. The security group for the instance does not have an outbound rule on port 3389.
upvoted 4 times
student2020
1 year, 9 months ago
E is wrong, the rule for 3389 must be inbound NOT outbound
upvoted 3 times
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AgboolaKun
5 months, 2 weeks ago
E is wrong because security groups are stateful. You only need to specify an inbound rule, outbound allows all traffic.
upvoted 1 times
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Jamshif01
1 year, 11 months ago
A - can be B - he is connecting via public anyway this is irrelevant C - yes it should have access to internet so he can connect outside D - this is for linux only E - can be so it's either AE or CE I vote for CE
upvoted 2 times
Jamshif01
1 year, 11 months ago
I was wrong about E it says outbound so the answer is AC 100%
upvoted 1 times
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Liongeek
1 year, 11 months ago
Selected Answer: AC
Ans: A&C
upvoted 2 times
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Gianiluca
2 years, 1 month ago
C and E - https://docs.aws.amazon.com/AWSEC2/latest/WindowsGuide/troubleshoot-connect-windows-instance.html
upvoted 2 times
Liongeek
1 year, 11 months ago
Outbound is not a concern here.
upvoted 1 times
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Surferbolt
2 years ago
Not E. Security Groups are stateful, inbound rules will apply to outbound rules.
upvoted 2 times
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nikkoe
2 years, 1 month ago
AC, outbound traffic has nothing to do with this
upvoted 2 times
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