IBM C1000-156 Exam - Topic 3 Question 34 Discussion

Actual exam question for IBM's C1000-156 exam

Question #: 34
Topic #: 3

[All C1000-156 Questions]

What is the main reason for tuning a building block?

AIncreasing the performance of the ecs-ec-ingress service

BReducing the number of false positives

CProperly documenting the building block for future administrators

DReducing EPS usage

Show Suggested Answer

Suggested Answer: B

Tuning a building block in IBM QRadar SIEM V7.5 is primarily aimed at reducing the number of false positives. This process involves adjusting the rules and logic within the building block to better differentiate between normal and suspicious activity. Here's the detailed explanation:

False Positives: High numbers of false positives can overwhelm analysts and obscure genuine threats. Tuning helps in refining detection criteria to reduce these false alarms.

Rule Adjustments: Modifying the thresholds, conditions, and filters within the building block rules to ensure they more accurately reflect the environment's typical behavior.

Improved Accuracy: Enhanced precision in detecting true security incidents, thus improving the overall effectiveness of the SIEM solution.

Reference IBM QRadar SIEM administration guides and best practice documents emphasize the importance of tuning to minimize false positives, ensuring more actionable alerts.

by Jennifer at Nov 19, 2025, 11:36 PM

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Jordan

1 day ago

I think it's more about performance, honestly.

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Regenia

6 days ago

B) Reducing the number of false positives - gotta love those false alarms, am I right?

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Eric

12 days ago

Tuning a building block? Sounds like a job for the "Building Block Whisperer"!

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Kerry

17 days ago

A) Increasing the performance of the ecs-ec-ingress service seems like a reasonable answer.

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Kassandra

22 days ago

D) Reducing EPS usage sounds like a good idea, but I'm not sure that's the main reason.

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Dorothea

27 days ago

C) Properly documenting the building block for future administrators is the way to go.

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Jade

1 month ago

Reducing EPS usage sounds familiar, but I can't recall if it was emphasized as the main goal in our studies.

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Desmond

1 month ago

I feel like documentation is crucial for future admins, but I don't know if that's the primary reason for tuning.

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Ettie

1 month ago

I remember a practice question that focused on reducing false positives, which seems really important too.

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Chanel

2 months ago

I'm a bit confused on this one. Could be any of those reasons, really. I'll have to carefully consider each option and try to eliminate the ones that don't seem as likely.

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Brock

2 months ago

I've got this! The main reason for tuning a building block is D - reducing EPS usage. Gotta optimize that performance, you know?

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Helene

2 months ago

Okay, let me think this through. I'm leaning towards C - properly documenting the building block for future administrators. That seems like an important reason to tune it, but I'll double-check my notes just to be sure.

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Jesusa

2 months ago

I think B is the best choice. False positives can really mess things up.

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Luisa

2 months ago

I think tuning a building block is mostly about improving performance, but I'm not sure if that's the main reason.

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Terry

3 months ago

Documentation is key for future admins, though!

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Carmela

3 months ago

It's all about reducing false positives!

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Tambra

3 months ago

Hmm, I think it might be B - reducing the number of false positives. That seems like a key reason to tune a building block, but I'm not 100% confident.

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Jani

3 months ago

I'm not sure about this one. I'll need to review the course materials on building block tuning to figure out the main reason.

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Scarlet

2 months ago

I think it's about reducing false positives.

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