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Exam AWS-SysOps topic 1 question 927 discussion

Exam question from Amazon's AWS-SysOps
Question #: 927
Topic #: 1
[All AWS-SysOps Questions]

A SysOps administrator is deploying a fleet of over 100 Amazon EC2 instances in an Amazon VPC. After the instances are set up and serving clients, a new DNS server needs to be added to the instances for DNS resolution.
What is the MOST efficient way to make this change?

  • A. Update the DHCP options set for the Amazon VPC.
  • B. Use AWS OpsWorks to update the DNS server configuration for each instance.
  • C. Use AWS Systems Manager to update the DMS server configuration for each instance.
  • D. Write a script to update the DNS server configuration for each instance.
Show Suggested Answer Hide Answer
Suggested Answer: A 🗳️
by USR at July 1, 2021, 1:43 p.m.
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sapien45
7 months, 3 weeks ago
DHCP Options Set ; easy, and more convenient
upvoted 2 times
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random_007
7 months, 3 weeks ago
option A is correct
upvoted 2 times
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ahaffar
7 months, 4 weeks ago
I think A is the best answer, in addition its auto-applied to the instances without rebooting https://wiki.outscale.net/display/EN/Modifying+the+DHCP+Options+Set+Associated+with+a+VPC
upvoted 3 times
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wahlbergusa
8 months ago
I was gonna pick "C" , but the question asks for the most efficient way hence "A" should be the correct answer.
upvoted 2 times
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Hizumi
8 months, 1 week ago
Answer is C because we need to add the new DNS server to the 100 instances, the most efficient way to get this done is use System Manager to automate the configuration
upvoted 1 times
Hizumi
8 months, 1 week ago
So I'm changing my answer to A based on this information: https://docs.aws.amazon.com/vpc/latest/userguide/VPC_DHCP_Options.html#AmazonDNS
upvoted 1 times
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mikelord
9 months ago
Answer: C System Manager
upvoted 1 times
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USR
9 months, 1 week ago
Answer is A
upvoted 1 times
bupend2
9 months ago
I agree with you. But say if you update it on the VPC level, it will reflect the same settings to every other resource on the VPC. Out of options given A is the best answer. But checking
upvoted 1 times
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Community vote distribution
A (35%)
C (25%)
B (20%)
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