IBM Exam C9510-401 Topic 6 Question 99 Discussion

Actual exam question for IBM's C9510-401 exam

Question #: 99
Topic #: 6

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?

AConfigure the storm drain health policy.

BConfigure the on demand router (ODR) transport chain to tune inbound connections.

CMonitor the JVM heap usage to determine a new server weight.

DEnable the PMI Extended statistic set and use the Connection Pool summary report.

Show Suggested Answer

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

by Justine at Sep 16, 2024, 10:22 PM

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Lavelle

27 days ago

D) is the way to go. Gotta love those extended stats and connection pool reports, they'll really help you get to the bottom of these kinds of issues.

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German

29 days ago

Haha, B) configuring the ODR transport chain to tune inbound connections? That's a good one! I'm pretty sure the answer is D, gotta use those performance monitoring tools.

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Fernanda

3 days ago

I agree, enabling the PMI Extended statistic set is crucial for preventing this issue in the future.

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Cassi

8 days ago

Yeah, monitoring the JVM heap usage could help us determine the server weight.

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Louisa

12 days ago

I think D is the right answer, we need to use those performance monitoring tools.

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Wilburn

1 months ago

I think D is the correct answer. Monitoring the connection pool and JVM metrics will give the admin the visibility they need to detect and address this problem.

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Nu

1 months ago

D) Enabling the PMI Extended statistic set and using the Connection Pool summary report seems like the way to go. That would give us the detailed metrics we need to identify the connection issues and adjust the server weight accordingly.

upvoted 0 times