Quick Answer
The answer is implementing ingestion-time data transformation to filter out noise, setting daily caps on high-volume tables, and using basic logs for low-security-value data sources. These three actions directly control Microsoft Sentinel cost optimization by reducing the volume of data billed per gigabyte ingested, as Sentinel’s pricing model charges for every GB sent to the workspace. Ingestion-time transformation strips out irrelevant fields before storage, daily caps on tables like SecurityEvent prevent runaway costs from verbose logs, and basic logs offer a cheaper tier for non-critical data. On the SC-200 exam, this question tests your understanding of cost governance within the “Manage Microsoft Sentinel” domain, often appearing as a scenario where a client has excessive noise from Windows event logs. A common trap is confusing retention settings with ingestion controls—retention affects storage cost, not ingestion cost. Memory tip: think “Filter, Cap, Tier”—the three pillars of Sentinel cost control.
This SC-200 practice question tests your understanding of manage a security operations environment. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which THREE actions are recommended practices for managing Microsoft Sentinel costs?
Set daily caps on high-volume tables.
Prevents runaway costs.
Use Basic Logs tier for verbose logs.
Cheaper than Analytics Logs.
Implement ingestion-time data transformation to filter out noise.
Reduces volume ingested.
Ingest all logs to ensure complete visibility.
Why wrong: Contradicts cost management.
Increase retention period to 1 year for all tables.
Why wrong: Increases cost.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Set daily caps on high-volume tables.
Setting daily caps on high-volume tables is a recommended practice because it prevents unexpected cost overruns by limiting the amount of data ingested into expensive tables like SecurityEvent or CommonSecurityLog. Microsoft Sentinel bills per GB ingested, so capping tables that generate large volumes of noise (e.g., verbose Windows event logs) directly controls costs without necessarily impacting security visibility, as critical alerts can still be generated from other sources.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Set daily caps on high-volume tables.
Why this is correct
Prevents runaway costs.
Related concept
Read the scenario before looking for a memorised answer.
Use Basic Logs tier for verbose logs.
Why this is correct
Cheaper than Analytics Logs.
Related concept
Read the scenario before looking for a memorised answer.
Implement ingestion-time data transformation to filter out noise.
Why this is correct
Reduces volume ingested.
Related concept
Read the scenario before looking for a memorised answer.
Ingest all logs to ensure complete visibility.
Why it's wrong here
Contradicts cost management.
Increase retention period to 1 year for all tables.
Why it's wrong here
Increases cost.
Common exam traps
The trap here is that candidates often confuse 'complete visibility' (Option D) with best practice, but Microsoft Sentinel explicitly recommends filtering noise at ingestion to reduce costs and improve signal-to-noise ratio, not ingesting everything.
Detailed technical explanation
Under the hood, Microsoft Sentinel uses Log Analytics workspaces where each table has a separate billing meter; daily caps are set at the workspace level via the 'daily quota' setting in the Usage and estimated costs blade, but they apply to all tables unless you use table-level retention policies or Basic Logs tier. Basic Logs (introduced in 2023) reduces ingestion cost by roughly 75% compared to Analytics Logs but limits query capabilities to simple searches and 30-day retention, making it ideal for verbose, low-security-value logs like DNS debug logs or firewall flow logs. Ingestion-time data transformation uses Data Collection Rules (DCRs) to filter or enrich logs before they are stored, reducing volume and cost at the point of ingestion, which is more efficient than post-ingestion filtering.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
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FAQ
Manage a security operations environment — This question tests Manage a security operations environment — Read the scenario before looking for a memorised answer..
The correct answer is: Set daily caps on high-volume tables. — Setting daily caps on high-volume tables is a recommended practice because it prevents unexpected cost overruns by limiting the amount of data ingested into expensive tables like SecurityEvent or CommonSecurityLog. Microsoft Sentinel bills per GB ingested, so capping tables that generate large volumes of noise (e.g., verbose Windows event logs) directly controls costs without necessarily impacting security visibility, as critical alerts can still be generated from other sources.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Same concept, more angles
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which TWO actions should you take to optimize cost in Microsoft Sentinel while maintaining security coverage? (Choose two.)
mediumWhy C: Option C is correct because reducing interactive retention for tables that do not require long-term, fast query access directly lowers storage costs. Microsoft Sentinel charges per GB for data stored in the interactive retention tier, while data moved to long-term retention (up to 12 years) is significantly cheaper. By tailoring retention periods to actual operational needs, you avoid paying premium rates for data that is rarely queried interactively.
Variation 2. Which TWO actions should you take to reduce the cost of Microsoft Sentinel while maintaining security coverage?
hardWhy B: Option B is correct because reducing the retention period for tables that do not require long-term storage directly lowers the data storage costs in Microsoft Sentinel. Sentinel charges per GB of data stored, and by shortening retention (e.g., from 90 days to 30 days) for non-critical tables, you reduce the volume of data retained without affecting security monitoring or incident investigation for the shortened period.
Last reviewed: Jun 25, 2026
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