Question 56 of 179 from exam AZ-204: Developing Solutions for Microsoft Azure

Question 56 of 179 from exam AZ-204: Developing Solutions for Microsoft Azure

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Question

DRAG DROP - Your company has several websites that use a company logo image.

You use Azure Content Delivery Network (CDN) to store the static image.

You need to determine the correct process of how the CDN and the Point of Presence (POP) server will distribute the image and list the items in the correct order.

In which order do the actions occur? To answer, move all actions from the list of actions to the answer area and arrange them in the correct order.

Select and Place:

Actions If no edge servers in the POP have the image in cache, the POP requests the file from the origin server. Auser requests the image from the CDN URL. The DNS routes the request to the best performing POP location. ‘Subsequent requests for the file may be directed to the same POP using the CDN logo image URL. The POP edge server returns the file from cache if the TTLhas not expired. ‘The origin server returns the logo image to an edge server in the POP. An edge server in the POP caches the logo image and returns the image to the client. Answer Area @ © ©O

Explanations

Actions Answer Area If no edge servers in the POP have the image in cache, the POP requests the file from the origin server. Auser requests the image from the CDN URL. The DNS routes the request to the best performing POP location. Auser requests the image from the CDN URL. The DNS routes the request to the best performing POP location. If no edge servers in the POP have the image in cache, the POP requests the file from the origin server. ‘Subsequent requests for the file may be directed to the same POP using the CDN logo image URL. The POP edge server returns the file from cache if the TTLhas not expired. ‘The origin server returns the logo image to an edge server in the POP. An edge server in the POP caches the logo image and returns the image to the client. @ © |The origin server returns the logo image to | an edge server in the POP. An edge server in the POP caches the logo image and returns the image to the client. ‘Subsequent requests for the file may be directed to the same POP using the CDN logo image URL. The POP edge server returns the file from cache if the TTL has not expired. ©O

Step 1: A user requests the image.

A user requests a file (also called an asset) by using a URL with a special domain name, such as <endpoint name>.azureedge.net.

This name can be an endpoint hostname or a custom domain.

The DNS routes the request to the best performing POP location, which is usually the POP that is geographically closest to the user.

Step 2:If no edge servers in the POP have the.

If no edge servers in the POP have the file in their cache, the POP requests the file from the origin server.

The origin server can be an Azure Web App, Azure Cloud Service, Azure Storage account, or any publicly accessible web server.

Step 3: The origin server returns the.

The origin server returns the file to an edge server in the POP.

An edge server in the POP caches the file and returns the file to the original requestor (Alice)

The file remains cached on the edge server in the POP until the time-to-live (TTL) specified by its HTTP headers expires.

If the origin server didn't specify a TTL, the default TTL is seven days.

Step 4: Subsequent requests for.

Additional users can then request the same file by using the same URL that the original user used, and can also be directed to the same POP.

If the TTL for the file hasn't expired, the POP edge server returns the file directly from the cache.

This process results in a faster, more responsive user experience.

https://docs.microsoft.com/en-us/azure/cdn/cdn-overview
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