- A
_GetWatchlist('name') and use the has operator
Why wrong: The has operator checks if a string contains a substring, not if an IP falls within a CIDR range. It would not handle IP range logic correctly.
- B
_GetWatchlist('name') and use the in operator
Why wrong: The in operator checks equality against a list of exact values. It cannot evaluate IP ranges dynamically; it would only match an exact IP listed, not a range.
- C
_GetWatchlist('name') and use the ipv4_is_in_range function with the watchlist as a parameter
ipv4_is_in_range(stringIP, stringRange) evaluates whether the IP is within the CIDR range. By passing the watchlist values, the analyst can match sign-in IPs against the stored ranges.
- D
_GetWatchlist('name') and use the contains operator
Why wrong: contains is a substring search, not suitable for IP range matching. It would incorrectly match IPs if the range string appears as a substring of the IP, which is not intended.
SC-200 Mitigate threats using Microsoft Sentinel Practice Question
This SC-200 practice question tests your understanding of mitigate threats using microsoft sentinel. 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.
A SOC analyst creates a watchlist in Microsoft Sentinel from a CSV file containing IP ranges (10.0.0.0/16) and a tag. The analyst wants to use this watchlist in a KQL query to check if a sign-in IP is within the ranges. Which KQL function should be used?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
_GetWatchlist('name') and use the ipv4_is_in_range function with the watchlist as a parameter
Option C is correct because the `ipv4_is_in_range` function is designed to check whether an IPv4 address falls within a specified CIDR range. When combined with `_GetWatchlist('name')`, you can iterate over the watchlist entries and use `ipv4_is_in_range` to compare the sign-in IP against each range. This is the only approach that correctly handles CIDR notation (e.g., 10.0.0.0/16) rather than performing string matching or exact value comparison.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
_GetWatchlist('name') and use the has operator
Why it's wrong here
The has operator checks if a string contains a substring, not if an IP falls within a CIDR range. It would not handle IP range logic correctly.
- ✗
_GetWatchlist('name') and use the in operator
Why it's wrong here
The in operator checks equality against a list of exact values. It cannot evaluate IP ranges dynamically; it would only match an exact IP listed, not a range.
- ✓
_GetWatchlist('name') and use the ipv4_is_in_range function with the watchlist as a parameter
- ✗
_GetWatchlist('name') and use the contains operator
Why it's wrong here
contains is a substring search, not suitable for IP range matching. It would incorrectly match IPs if the range string appears as a substring of the IP, which is not intended.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse string-matching operators (has, contains, in) with IP-specific functions, failing to recognize that CIDR range evaluation requires a dedicated function like `ipv4_is_in_range`.
Detailed technical explanation
How to think about this question
The `ipv4_is_in_range` function uses bitwise masking to compare the network prefix of the IP address against the CIDR range, ensuring accurate subnet membership. In KQL, you typically use `where ipv4_is_in_range(SignInIP, WatchlistIPRange)` after expanding the watchlist with `_GetWatchlist('name') | project IPRange`. This is critical in SOC workflows where watchlists contain multiple CIDR ranges, as it avoids false positives from string-based operators.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this SC-200 question test?
Mitigate threats using Microsoft Sentinel — This question tests Mitigate threats using Microsoft Sentinel — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: _GetWatchlist('name') and use the ipv4_is_in_range function with the watchlist as a parameter — Option C is correct because the `ipv4_is_in_range` function is designed to check whether an IPv4 address falls within a specified CIDR range. When combined with `_GetWatchlist('name')`, you can iterate over the watchlist entries and use `ipv4_is_in_range` to compare the sign-in IP against each range. This is the only approach that correctly handles CIDR notation (e.g., 10.0.0.0/16) rather than performing string matching or exact value comparison.
What should I do if I get this SC-200 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
This SC-200 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SC-200 exam.
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