AZ-204 Practice Question: Monitor, troubleshoot, and optimize Azure solutions
This AZ-204 practice question tests your understanding of monitor, troubleshoot, and optimize azure solutions. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. 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.
You need to analyze all exceptions that occurred in the last 24 hours from an application monitored by Application Insights. You want to group them by exception type, and for each type show the URL where it occurred and the count. Which Log Analytics Kusto query should you use?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
exceptions | where timestamp > ago(24h) | summarize count() by type, url
Option B is correct because the query filters exceptions from the last 24 hours using `timestamp > ago(24h)`, groups them by `type` (exception type) and `url` (the URL where the exception occurred), and then counts occurrences per group with `summarize count()`. This directly matches the requirement to show, for each exception type, the URL and the count.
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.
✗
exceptions | where timestamp > ago(24h) | summarize count() by type, cloud_RoleInstance
Why it's wrong here
This groups by exception type and cloud role instance, not by URL as required.
✓
exceptions | where timestamp > ago(24h) | summarize count() by type, url
Why this is correct
This query correctly filters the last 24 hours and groups by exception type and URL with a count of occurrences.
Related concept
Read the scenario before looking for a memorised answer.
✗
exceptions | where timestamp > ago(24h) | summarize count() by type, operation_Name
Why it's wrong here
Grouping by operation name gives the name of the operation (e.g., controller action) but not the URL as required.
✗
exceptions | where timestamp > ago(24h) | summarize count() by type
Why it's wrong here
This groups only by exception type, missing the URL information needed.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse `url` with `operation_Name` or `cloud_RoleInstance`, thinking those columns also represent the URL, but only `url` directly captures the request URL where the exception occurred.
Detailed technical explanation
How to think about this question
In Application Insights, the `exceptions` table contains a `url` column that records the full URL of the request that caused the exception, while `cloud_RoleInstance` identifies the host and `operation_Name` is the logical operation name (often derived from the request path). The `ago(24h)` function uses the UTC timestamp to filter records, and `summarize count() by type, url` performs an aggregation that groups by both columns, producing one row per unique exception-type/URL pair. This query is efficient because it leverages the pre-indexed `timestamp` column and avoids scanning the entire table.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-204 question in full detail.
Monitor, troubleshoot, and optimize Azure solutions — This question tests Monitor, troubleshoot, and optimize Azure solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: exceptions | where timestamp > ago(24h) | summarize count() by type, url — Option B is correct because the query filters exceptions from the last 24 hours using `timestamp > ago(24h)`, groups them by `type` (exception type) and `url` (the URL where the exception occurred), and then counts occurrences per group with `summarize count()`. This directly matches the requirement to show, for each exception type, the URL and the count.
What should I do if I get this AZ-204 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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