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IBM Exam C9510-401 Topic 3 Question 81 Discussion

Actual exam question for IBM's C9510-401 exam
Question #: 81
Topic #: 3
[All C9510-401 Questions]

While monitoring a cluster in the cell, the administrator notices that one server in the cluster periodically loses connections to the database. When this happens, requests to the server have a significantly decreased response time and various error conditions are listed in the log files for the server. Since the error codes are returned quickly, the server starts returning responses faster than the average service times for the application. Due to this, the weight for the server is increased and a large percentage of incoming requests are being routed to the erroneous server and the server is getting overloaded with requests.

How can the administrator detect these conditions in the future and take action to prevent this problem?

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Suggested Answer: A

Storm drain condition tracks requests that have a significantly decreased response time. This policy relies on change point detection on given time series data.

References: https://www.ibm.com/support/knowledgecenter/SSAW57_8.5.5/com.ibm.websphere.nd.doc/ae/cwve_odhealth.html


Contribute your Thoughts:

Elin
6 months ago
I think C could also be a good choice, monitoring the JVM heap usage can help determine server weight and prevent overload.
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Lynette
7 months ago
I agree with Allene, setting up the storm drain health policy seems like the best option to avoid this issue in the future.
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Allene
7 months ago
I disagree with Rolland, I believe the answer is A, configuring the storm drain health policy can help prevent server overload.
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Rolland
7 months ago
I think the answer is D, because enabling the PMI Extended statistic set can help monitor the connection pool and detect issues.
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