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Question 88 - 350-901 discussion

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An Etag header is included in the HTTP response for an API resource. What are two benefits of usingthe value of the Etag for future interactions involving the same API resource? (Choose two.)

A.

caching and optimization of response payloads

Answers
A.

caching and optimization of response payloads

B.

creating conditional requests

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B.

creating conditional requests

C.

categorizing and comparing this API resource with others

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C.

categorizing and comparing this API resource with others

D.

checking the integrity of the resource

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D.

checking the integrity of the resource

E.

requesting the list of operations authorized for this resource

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E.

requesting the list of operations authorized for this resource

Suggested answer: A, B

Explanation:

• The ETag HTTP response header is an identifier for a specific version of a resource. It lets caches bemore efficient and save bandwidth, as a web server does not need to resend a full response if thecontent has not changed. Additionally, etags help prevent simultaneous updates of a resource fromoverwriting each other ("mid-air collisions").

• The ETag or entity tag is part of HTTP, the protocol for the World Wide Web. It is one of severalmechanisms that HTTP provides for Web cache validation, which allows a client to make conditionalrequests.

asked 10/10/2024
Johan Benavides
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