The answer is the KQL query `AzureActivity | where ActivityStatusValue == "Failed" | project TimeGenerated, OperationName, Caller`. This is correct because it uses the `where` clause to filter the AzureActivity table specifically for rows where the `ActivityStatusValue` field equals "Failed", isolating only unsuccessful operations, and then the `project` operator narrows the output to the required columns of timestamp, operation name, and caller identity. On the AZ-104 exam, this tests your ability to construct a KQL query to filter failed operations from the Azure activity log, a common scenario for troubleshooting and auditing. A frequent trap is confusing `ActivityStatusValue` with `Status` or forgetting to use the exact string "Failed" with proper capitalization; the activity log stores status as a string value, not a boolean. Remember the mnemonic "Where Failed, Project Three" to recall the filter clause first, then the three key columns.
AZ-104 Monitor and Maintain Azure Resources Practice Question
This AZ-104 practice question tests your understanding of monitor and maintain azure resources. 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.
Option A is correct because the KQL query filters the AzureActivity table using the `where` clause to return only rows where `ActivityStatusValue` equals 'Failed', then projects the relevant columns `TimeGenerated`, `OperationName`, and `Caller`. This directly meets the requirement to return only failed operations from the log entries.
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.
This filters the table to failed rows and keeps the useful columns for review.
Related concept
Read the scenario before looking for a memorised answer.
✗
AzureActivity | summarize count() by Caller
Why it's wrong here
This groups results by caller, but it does not return only failed operations.
✗
AzureActivity | top 10 by TimeGenerated
Why it's wrong here
This shows the most recent entries, but it does not filter by failure status.
✗
AzureActivity | where ActivityStatusValue == "Succeeded"
Why it's wrong here
This returns successful operations, which is the opposite of the stated requirement.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse the `ActivityStatusValue` field with other status fields like `Status` or `ResultType`, or mistakenly choose an aggregation query (Option B) that summarizes data without filtering, failing to meet the precise requirement to return only failed operations.
Trap categories for this question
Command / output trap
This shows the most recent entries, but it does not filter by failure status.
Detailed technical explanation
How to think about this question
The `AzureActivity` table in Azure Monitor Logs stores resource-level control plane events, and the `ActivityStatusValue` field uses values like 'Succeeded', 'Failed', 'Accepted', and 'Started' to indicate the outcome of each operation. The `project` operator in KQL is more efficient than `extend` or `select` for reducing column count, and using `where` before `project` optimizes query performance by filtering rows early. In real-world scenarios, this query is essential for auditing failed deployments or RBAC changes, where pinpointing the exact operation and caller is critical for root cause analysis.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-104 question in full detail.
Monitor and Maintain Azure Resources — This question tests Monitor and Maintain Azure Resources — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: AzureActivity | where ActivityStatusValue == "Failed" | project TimeGenerated, OperationName, Caller — Option A is correct because the KQL query filters the AzureActivity table using the `where` clause to return only rows where `ActivityStatusValue` equals 'Failed', then projects the relevant columns `TimeGenerated`, `OperationName`, and `Caller`. This directly meets the requirement to return only failed operations from the log entries.
What should I do if I get this AZ-104 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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