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Cisco 500-430 Exam - Topic 1 Question 5 Discussion

A Java-based web application was instrumented. The browser snapshots provide a detailed look at an individual page request, however the correlated server-side snapshots are missing forall requests. What are two reasons for this missing correlated server-side snapshots? (Choose two.)
A) Server has set the the HitpOnly flag on all cookies. and E) Server side application is not instrumented with server agent.
B) Correlated server-side snapshots work only for NET Applications.
C) Correlated snapshots are visible only if the injection mechanism is Automatic.
D) Correlated snapshots are visible only if browser is Chrome.
F) Correlated server-side snapshots are visible only if Java version is 1.7+.

Cisco 500-430 Exam - Topic 1 Question 5 Discussion

Actual exam question for Cisco's 500-430 exam
Question #: 5
Topic #: 1
[All 500-430 Questions]

A Java-based web application was instrumented. The browser snapshots provide a detailed look at an individual page request, however the correlated server-side snapshots are missing for

all requests. What are two reasons for this missing correlated server-side snapshots? (Choose two.)

Show Suggested Answer Hide Answer
Suggested Answer: A, E

According to the Cisco AppDynamics Professional Implementer (CAPI) documents, the two reasons for the missing correlated server-side snapshots are:

Server has set the HttpOnly flag on all cookies. (A) This is a valid reason because the HttpOnly flag is a security feature that prevents client-side scripts from accessing the cookies. However, the AppDynamics JavaScript Agent relies on the cookies to correlate the browser snapshots with the server-side snapshots. The JavaScript Agent injects a cookie named _appdyn_browser into the browser requests, which contains the correlation information. If the server sets the HttpOnly flag on all cookies, including the _appdyn_browser cookie, the JavaScript Agent cannot read or modify the cookie, and the correlation fails.To enable the correlation, the server should not set the HttpOnly flag on the _appdyn_browser cookie12.

Server-side application is not instrumented with server agent. (E) This is a valid reason because the server-side snapshots are collected by the AppDynamics app agents that instrument the application servers. The app agents monitor the business transactions that are executed by the server-side application, and capture the execution context, call graphs, errors, and metrics. If the server-side application is not instrumented with the app agent, the server-side snapshots are not available, and the correlation fails.To enable the correlation, the server-side application should be instrumented with the app agent that is compatible with the application server and the Controller34.

The incorrect options are:

Correlated server-side snapshots work only for .NET Applications. (B) This is not a valid reason because the correlated server-side snapshots work for any application server that is instrumented with the AppDynamics app agent, not only for .NET applications. The AppDynamics platform supports various application servers, such as Java, .NET, PHP, Node.js, Python, and C/C++.The app agents collect the server-side snapshots for the business transactions that are executed by the application server, regardless of the programming language or framework34.

Correlated snapshots are visible only if the injection mechanism is Automatic. This is not a valid reason because the correlated snapshots are visible regardless of the injection mechanism. The injection mechanism refers to the way the AppDynamics JavaScript Agent is inserted into the web pages. There are two injection mechanisms: Automatic and Manual. The Automatic injection mechanism uses the app agent to inject the JavaScript Agent into the web pages that are served by the application server. The Manual injection mechanism requires the user to manually insert the JavaScript Agent into the web pages. Both injection mechanisms support the correlation of the browser snapshots and the server-side snapshots, as long as the JavaScript Agent and the app agent are configured correctly .

Correlated snapshots are visible only if browser is Chrome. (D) This is not a valid reason because the correlated snapshots are visible regardless of the browser. The AppDynamics JavaScript Agent supports various browsers, such as Chrome, Firefox, Safari, Edge, and Internet Explorer. The JavaScript Agent collects the browser snapshots for the web pages that are loaded by the browser, and correlates them with the server-side snapshots, regardless of the browser type or version .

Correlated server-side snapshots are visible only if Java version is 1.7+. (F) This is not a valid reason because the correlated server-side snapshots are visible regardless of the Java version. The AppDynamics Java Agent supports various Java versions, such as 1.5, 1.6, 1.7, 1.8, and 11. The Java Agent collects the server-side snapshots for the business transactions that are executed by the Java application server, and correlates them with the browser snapshots, regardless of the Java version or vendor .


1: Browser Snapshots - AppDynamics

2: Troubleshoot Browser RUM - AppDynamics

3: Transaction Snapshots - AppDynamics

4: Supported Environments and Versions - AppDynamics

[5]: Browser Real User Monitoring - AppDynamics

[6]: Set Up and Configure Web EUM - AppDynamics

[7]: Browser Support - AppDynamics

[8]: Java Agent - AppDynamics

[9]: Java Supported Environments - AppDynamics

by Glenna at Dec 21, 2023, 02:16 AM

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Joye
9 months ago
HitpOnly flag can definitely mess things up too.
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Barrett
9 months ago
I thought it worked for all Java versions, not just 1.7+.
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Malcolm
10 months ago
Wait, does it really only work for NET Applications?
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Melissa
10 months ago
Totally agree, without the agent, no snapshots!
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Maurine
10 months ago
Missing server agent is a common issue.
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Shawana
10 months ago
I vaguely recall that if the server isn't instrumented with the agent, we wouldn't get those correlated snapshots.
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Cristal
11 months ago
I'm not entirely sure, but I feel like the browser type shouldn't matter for server-side snapshots.
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Belen
11 months ago
I think I saw a question like this before, and it mentioned something about the HitpOnly flag affecting cookie behavior.
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Sheridan
11 months ago
I remember something about the server needing to be instrumented properly; maybe that's why the snapshots are missing?
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Lacresha
11 months ago
I think the HitpOnly flag on cookies could be a potential reason. That would prevent the correlation between the browser and server-side data.
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Janna
11 months ago
I'm a bit confused by the options. Some of them don't seem to make much sense to me. I'll need to read through them carefully.
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Avery
11 months ago
Okay, let's see. I'm pretty sure the server agent instrumentation is the key here. I'll focus on that as a likely reason.
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Herman
11 months ago
Hmm, this seems like a tricky one. I'll need to think carefully about the possible reasons for the missing server-side snapshots.
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Art
11 months ago
Ah, I see. The server-side instrumentation is likely the culprit. If the application wasn't properly set up, that would explain the missing snapshots.
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Denise
11 months ago
Ah, I see. Adding the field to the Contract object's Field Set makes the most sense to ensure it's displayed during the Amendment process. Option A looks like the right approach to me.
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Emile
11 months ago
Okay, the question is talking about censored observations in a survival time study. I remember from my stats class that censored observations mean the subject didn't experience the event of interest by the end of the study. So I'm guessing the answer has to do with what that means about the subjects.
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Wai
11 months ago
Okay, let me think this through. I believe the steps would be to add the domain to the Export Email Whitelist and then enforce that whitelist. That should limit the tracking data to only the ntoretail.com emails.
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Dorcas
11 months ago
This seems like a straightforward question about healthcare institutions. I'll read through the options carefully and think about the key characteristics of each type.
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Deane
2 years ago
Hmm, I'm not so sure. What if the server has set the HttpOnly flag on all cookies? That could also prevent the correlation between the browser and server-side snapshots.
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Leonora
2 years ago
That's a good point. The question specifically mentions 'correlated server-side snapshots', so the server agent must be the issue here. I'm leaning towards option E as the correct answer.
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Willow
2 years ago
I think we can confidently select option E as one of the answers.
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Cassi
2 years ago
Looks like option E is a strong contender for one of the reasons for missing snapshots.
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Latrice
2 years ago
Definitely, without the server agent, the correlated snapshots can't be collected.
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My
2 years ago
So, the missing correlated server-side snapshots could be due to the server agent not being present on the server.
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Franklyn
2 years ago
That's true, if the server agent is not installed, correlated server-side snapshots won't be captured.
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Bo
2 years ago
Agreed, option E mentions that the server side application is not instrumented with a server agent.
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Izetta
2 years ago
I think the server agent not being installed is the issue.
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Katlyn
2 years ago
I agree, this is a bit of a head-scratcher. My initial thought is that the server-side application is not properly instrumented with the server agent, which would explain the missing server-side snapshots.
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Flo
2 years ago
This is a tricky question. It seems like the key is missing the correlated server-side snapshots, which should be available if the application is properly instrumented.
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