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Question 17 - MCPA - Level 1 discussion

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A System API is designed to retrieve data from a backend system that has scalability challenges.

What API policy can best safeguard the backend system?

A.
IPwhitelist
Answers
A.
IPwhitelist
B.
SLA-based rate limiting
Answers
B.
SLA-based rate limiting
C.
Auth 2 token enforcement
Answers
C.
Auth 2 token enforcement
D.
Client ID enforcement
Answers
D.
Client ID enforcement
Suggested answer: A, B, D

Explanation:

Answer: SLA-based rate limiting

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>> Client Id enforement policy is a "Compliance" related NFR and does not help in maintaining the "Quality of Service (QoS)". It CANNOT and NOT meant for protecting the backend systems from scalability challenges.

>> IP Whitelisting and OAuth 2.0 token enforcement are "Security" related NFRs and again does not help in maintaining the "Quality of Service (QoS)". They CANNOT and are NOT meant for protecting the backend systems from scalability challenges.

Rate Limiting, Rate Limiting-SLA, Throttling, Spike Control are the policies that are "Quality of Service (QOS)" related NFRs and are meant to help in protecting the backend systems from getting overloaded.

https://dzone.com/articles/how-to-secure-apis

asked 18/09/2024
Justin Kim
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