IBM C1000-189 Exam - Topic 2 Question 4 Discussion

Actual exam question for IBM's C1000-189 exam

Question #: 4
Topic #: 2

[All C1000-189 Questions]

What is the purpose of creating a custom service rule in Instana?

ATo set a global service name for all calls

BTo map services using existing meta-information of the infrastructure component

CTo create a manual service configuration

DTo apply the service.name tag of the infrastructure component

Show Suggested Answer

Suggested Answer: B

IBM Instana Observability enables users to create custom service rules to precisely associate telemetry with logical services using meta-information already present in infrastructure components. The documentation specifies: 'Custom service rules enable mapping of discovered entities to meaningful service constructs, using labels, tags, or annotations present on infrastructure components.' This supports the grouping and visualization of traffic/metrics for actual business workflows rather than default technical boundaries. By analyzing meta-data, such as Kubernetes labels, docker tags, or VM metadata, Instana automatically maps relevant requests and traces to the defined service names, improving observability and simplifying troubleshooting. Global service naming (A) and manual configuration (C) do not leverage infrastructure metadata and are not scalable in dynamic environments. Option D relies only on a service.name tag, missing broader meta-information mapping capabilities. The verified documentation supports answer B as the sole comprehensive approach for dynamic service discovery within Instana.

by Leonard at Nov 21, 2025, 04:06 PM

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Von

21 hours ago

Totally agree, C is the right choice!

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Benton

6 days ago

Option A is just too simple. I'm going with C for the win!

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Leeann

11 days ago

Haha, I bet the developers at Instana had a good laugh coming up with these answer choices.

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Apolonia

16 days ago

D is the way to go. Applying the service.name tag is the purpose of custom service rules.

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Ahmed

22 days ago

I think C is the correct answer. Custom service rules allow manual configuration.

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Yan

27 days ago

Option B seems the most logical choice here.

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Norah

1 month ago

This question reminds me of a practice one we did, and I think it was about setting global names, which might relate to option A.

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Shawana

1 month ago

I'm not entirely sure, but I feel like the service.name tag is important, so maybe option D is the right choice?

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Remona

1 month ago

I remember something about mapping services with meta-information, which sounds like option B could be relevant here.

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Reuben

2 months ago

I'm not entirely sure about this one. The options seem similar, but I think the key is that the custom service rule lets you apply the service.name tag, so I'll go with D.

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Justine

2 months ago

I'm pretty confident the answer is C. Creating a custom service rule allows you to manually configure the service, rather than relying on automatic detection.

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Freeman

2 months ago

Okay, I've got it! The custom service rule is to map services using the existing meta-information of the infrastructure component, so I'll choose option B.

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Tamra

2 months ago

It's mainly for manual service configuration.

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Johna

2 months ago

I think creating a custom service rule is mainly about manual configurations, so I might lean towards option C.

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Carlee

3 months ago

I feel like C makes sense too. Manual config can be useful.

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Jesusa

3 months ago

Hmm, I'm a bit confused on this one. Is it to set a global service name or to map services using existing meta-information? I'll need to think this through carefully.

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Rosalind

3 months ago

I think the purpose of creating a custom service rule in Instana is to manually configure the service, so I'd go with option C.

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Theron

2 months ago

I agree with Tamekia. Mapping is crucial for understanding the infrastructure.

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Tamekia

3 months ago

I see your point, but I think it's more about mapping services. Option B makes sense.

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