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Exam AWS-SysOps topic 1 question 311 discussion

Exam question from Amazon's AWS-SysOps
Question #: 311
Topic #: 1
[All AWS-SysOps Questions]

You run a web application with the following components Elastic Load Balancer (EL8), 3 Web/Application servers, 1 MySQL RDS database with read replicas, and
Amazon Simple Storage Service (Amazon S3) for static content. Average response time for users is increasing slowly.
What three CloudWatch RDS metrics will allow you to identify if the database is the bottleneck? (Choose three.)

  • A. The number of outstanding IOs waiting to access the disk.
  • B. The amount of write latency.
  • C. The amount of disk space occupied by binary logs on the master.
  • D. The amount of time a Read Replica DB Instance lags behind the source DB Instance
  • E. The average number of disk I/O operations per second.
Show Suggested Answer Hide Answer
Suggested Answer: ABD 🗳️
by karmaah at Nov. 22, 2019, 11:57 p.m.
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dexdinh91
4 months, 3 weeks ago
Selected Answer: BDE
I think BDE is correct
upvoted 1 times
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albert_kuo
10 months, 2 weeks ago
Selected Answer: BDE
the three CloudWatch RDS metrics that will help identify if the database is the bottleneck are B. The amount of write latency, D. The amount of time a Read Replica DB Instance lags behind the source DB Instance, and E. The average number of disk I/O operations per second.
upvoted 1 times
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antthomas
2 years, 3 months ago
Selected Answer: ABE
"The average would not help in bottleneck. The other factors clearly indicate the bottlenecks, the lags and outstanding requests."
upvoted 1 times
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TroyMcLure
2 years, 6 months ago
Correct Answers: A, B & E
upvoted 1 times
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gretch
2 years, 6 months ago
I think ABD according to https://jayendrapatil.com/aws-rds-monitoring-notification/ "The average would not help in bottleneck. The other factors clearly indicate the bottlenecks, the lags and outstanding requests."
upvoted 3 times
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dennismp
2 years, 6 months ago
A,B,E are correct ans
upvoted 3 times
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awscertified
2 years, 7 months ago
A. The number of outstanding IOs waiting to access the disk. B. The amount of write latency. E. The average number of disk I/O operations per second.
upvoted 2 times
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kteng
2 years, 7 months ago
i've elected on ADE, seems all agreed on E here...
upvoted 2 times
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aksliveswithaws
2 years, 7 months ago
D might cause end the user to get stale data but not increase in average response time so ABE is correct
upvoted 3 times
...
karmaah
2 years, 7 months ago
why Not E?..any comments ?
upvoted 3 times
...
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