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Exam AZ-204 topic 2 question 39 discussion

Actual exam question from Microsoft's AZ-204

Question #: 39
Topic #: 2

You are developing a web application that runs as an Azure Web App. The web application stores data in Azure SQL Database and stores files in an Azure
Storage account. The web application makes HTTP requests to external services as part of normal operations.
The web application is instrumented with Application Insights. The external services are OpenTelemetry compliant.
You need to ensure that the customer ID of the signed in user is associated with all operations throughout the overall system.
What should you do?

A. Add the customer ID for the signed in user to the CorrelationContext in the web application
B. On the current SpanContext, set the TraceId to the customer ID for the signed in user
C. Set the header Ocp-Apim-Trace to the customer ID for the signed in user
D. Create a new SpanContext with the TraceFlags value set to the customer ID for the signed in user

Show Suggested Answer

Suggested Answer: A 🗳️

by nt_ar at April 25, 2022, 1:01 a.m.

Comments

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1989jay

Highly Voted 1 year ago

This question was on exam. 09/01/2024. Passed 872.

upvoted 13 times

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neelkanths

Highly Voted 8 months, 4 weeks ago

Selected Answer: A

Got it on 20 April 2024...Marks > 950...answer is correct....all questions from examtopics 400 question bank

upvoted 9 times

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raja33

Most Recent 3 months ago

Selected Answer: A

Got this in the exam today! Apr 19, 2025

upvoted 1 times

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applepie

1 year, 5 months ago

got this question today, answer A - 7/30/2023, score 895/1000

upvoted 5 times

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imanonion

2 years ago

Selected Answer: A

Answer by ChatGPT, which I think looks legit: "I would choose option A, Add the customer ID for the signed in user to the CorrelationContext in the web application. The CorrelationContext is a way to associate contextual information with a request as it flows through the system. It allows you to track a request as it passes through different components of the system, and to identify related log entries and telemetry data. By adding the customer ID to the CorrelationContext in the web application, you can ensure that it is associated with all operations throughout the overall system. This will allow you to track the request and identify related log entries and telemetry data for a specific customer.

upvoted 4 times

imanonion

2 years ago

Option B, On the current SpanContext, set the TraceId to the customer ID for the signed in user, is not correct because the TraceId is a unique identifier for a trace, and it is not meant to be used to store contextual information about the request. Option C, Set the header Ocp-Apim-Trace to the customer ID for the signed in user, is not correct because the Ocp-Apim-Trace header is used by Azure API Management to track requests as they pass through the API gateway, and it is not related to application instrumentation or tracing. Option D, Create a new SpanContext with the TraceFlags value set to the customer ID for the signed in user, is not correct because the TraceFlags value is used to indicate the state of the trace and is not meant to be used to store contextual information about the request."

upvoted 7 times

Puja079888

11 months ago

good explanation

upvoted 1 times

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OPT_001122

2 years, 2 months ago

Selected Answer: A

A. Add the customer ID for the signed in user to the CorrelationContext in the web application

upvoted 2 times

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Akiu

2 years, 3 months ago

OpenTelemetry uses correlation context and it fits the requirements: Correlation context carries user-defined properties. These properties are typically data that you would like to eventually aggregate for correlation analysis or use to filter your trace data, such as a customer identifier, ... https://lightstep.com/opentelemetry/context-propagation

upvoted 3 times

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chessace2000

2 years, 3 months ago

Selected Answer: B

It has to be OpenTelemetry compliant. This means using W3C correlation spec. CorrelationContext (A) is legacy correlation spec not W3C.

upvoted 2 times

warchoon

1 year, 11 months ago

tracestate: Carries system-specific tracing context. It is a part of correlation headers using W3C TraceContext. Correlation-Context is deprecated. But this is the same as the Request-Context which is currently in use.

upvoted 1 times

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willchenxa

2 years, 4 months ago

Selected Answer: A

A SpanContext represents the portion of a Span which must be serialized and propagated along side of a Baggage. https://open-telemetry.github.io/opentelemetry-js-api/interfaces/spancontext.html

upvoted 5 times

warchoon

1 year, 11 months ago

Agree https://learn.microsoft.com/en-us/azure/azure-monitor/app/opentelemetry-enable?tabs=java#set-the-user-id-or-authenticated-user-id

upvoted 1 times

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finnishr

2 years, 4 months ago

Selected Answer: B

The correct answer is B.

upvoted 1 times

DonH

1 year, 7 months ago

This answer is useless without any explanation. Come on guys this is annoying and NOT helpfull. Please clarify WHY it is the correct answer. Now we have a group of people stating A is correct and an other group stating B is correct. How are we suppose to know what is correct?

upvoted 3 times

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lhy904

2 years, 8 months ago

Why not B?

upvoted 2 times

warchoon

1 year, 11 months ago

"The value of trace-id SHOULD be globally unique. One recommended method to ensure global uniqueness, as well as to address some privacy and security considerations, to a satisfactory degree of certainty is to randomly (or pseudo-randomly) generate the trace-id. Implementers SHOULD use a trace-id generation method which randomly (or pseudo-randomly) generates at least the right-most 7 bytes of the ID." by specs ChatGPT is lying (as usual) that you can't use it to request, but you can't use TraceId with all operations throughout the overall system

upvoted 2 times

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nt_ar

2 years, 9 months ago

Selected Answer: A

That's correct

upvoted 2 times

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