Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A SOC analyst wants to create a Microsoft Sentinel scheduled analytics rule that alerts when a user from a critical department (e.g., Finance) logs on from an IP address that is not in the company's approved IP address ranges. The analyst has an Azure Sentinel watchlist named 'FinanceApprovedIPs' containing the allowed IP ranges. Which KQL operator should be used in the rule's query to efficiently check if the IP address from SigninLogs falls within any of the watchlist ranges?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Best answer
join kind=inner (watchlist) on $left.IPAddress $right.IPRange with condition using ipv4_is_in_range() or ipv4_lookup()
This pattern joins the sign-in data with the watchlist and uses IP range comparison functions to check if the IP falls within any allowed range.
B
Distractor review
where IPAddress has any (watchlist)
'has' is for substring matching, not IP range comparison.
C
Distractor review
where IPAddress in (watchlist)
'in' checks for exact equality, not range inclusion.
D
Distractor review
where IPAddress startswith (watchlist)
'startswith' only matches the beginning of the string, not applicable to IP ranges.
Common exam trap
Common exam trap: usable hosts are not the same as total addresses
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Technical deep dive
How to think about this question
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
KKey Concepts to Remember
- CIDR notation defines the prefix length.
- Block size helps identify subnet boundaries.
- Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
- The required host count determines the smallest suitable subnet.
TExam Day Tips
- Write the block size before choosing the subnet.
- Check whether the question asks for hosts, subnets or a specific address range.
- Do not confuse /24, /25, /26 and /27 host counts.
Related practice questions
Related SC-200 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A Microsoft Sentinel scheduled analytics rule detects impossible travel but creates too many duplicate incidents for the same user within a short period. Which two rule settings should you tune? (Choose 2.)
Question 2
A phishing email was delivered to several users. The analyst wants to find all messages in the campaign, see delivery actions, and perform remediation from the Microsoft 365 Defender portal. Which tool should they use?
Question 3
A security analyst in Microsoft Defender for Cloud receives an alert that an Azure VM has a vulnerability with a high severity. The analyst wants to see the detailed finding, including the steps to remediate. Which blade or page should the analyst open?
Question 4
A company uses Microsoft Defender for Cloud to protect an Azure Kubernetes Service (AKS) cluster. The security team wants to receive security alerts about suspicious activities within the cluster, such as a container running with root privileges or attempts to read sensitive host paths. Which Defender for Cloud plan must be enabled to generate these alerts?
Question 5
A security analyst is configuring Microsoft Sentinel scheduled analytics rules to detect brute-force attacks on Microsoft Entra ID. Arrange the steps in the correct order from first to last.
Question 6
An organization uses Microsoft 365 Defender. A security analyst is investigating a malware incident on a user's device. The automated investigation and response (AIR) has already isolated the device from the network. The analyst now needs to collect a copy of a specific suspicious file from the device for further analysis. Which action should the analyst initiate from the device's entity page?
FAQ
Questions learners often ask
What does this SC-200 question test?
CIDR notation defines the prefix length.
What is the correct answer to this question?
The correct answer is: join kind=inner (watchlist) on $left.IPAddress $right.IPRange with condition using ipv4_is_in_range() or ipv4_lookup() — When comparing an IP address against a watchlist that contains IP ranges (CIDR), the 'ipv4_is_in_range()' function can check if an IP falls within a specific prefix. The watchlist can store ranges as strings, and the query can iterate over them. A more efficient approach is to use the 'ipv4_lookup()' function if the watchlist is structured as a lookup table. However, the most common and straightforward operator is to use the 'where' clause with 'ipv4_is_in_range()' for each row. Since the watchlist contains multiple ranges, you typically join the watchlist and use 'ipv4_is_in_range()' in the join condition. Option A is correct. Option B 'has' is for substring matching, not IP range. Option C 'in' works for exact match only. Option D 'startswith' is for prefix matching of strings, not IP ranges.
What should I do if I get this SC-200 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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