Question 1

You are designing a serverless architecture using Azure Functions to process images uploaded to Blob Storage.

The processing requires a custom Linux container image. The workload is highly unpredictable, with sudden massive spikes in uploads. The function must scale out rapidly to handle the spikes, but must not suffer from 'cold starts' (latency when a new instance spins up).

Which Azure Functions hosting plan should you recommend?

Accepted Answer

Combine the constraints: 'custom container' + 'rapid scale' + 'no cold starts'. Consumption fails on containers/cold starts. Dedicated fails on rapid scale. Premium does all three.

Question 2

What mistakes do candidates make on this AZ-305 question?

Accepted Answer

Choosing Consumption plan because it's 'serverless', forgetting that Consumption suffers from cold starts and cannot run custom Docker containers.

How to approach this question

Full Answer

Common mistakes

Practice the full Azure Solutions Architect Expert AZ-305 Practice Exam 4

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