Exam AZ-220 topic 1 question 15 discussion

Actual exam question from Microsoft's AZ-220

Question #: 15
Topic #: 1

You are configuring a production environment for an Azure IoT solution.
You plan to deploy 1,000 IoT devices. Each device will send one device-to-cloud message every hour. Each message will be 4 KB.
You need to deploy an Azure IoT hub that will support the IoT device deployment. The solution must meet the following requirements:
✑ Perform bulk device operations such as creating multiple device identities.
✑ Minimize costs
What should you deploy?

A. one unit of the B1 tier
B. one unit of the free tier
C. one unit of the S1 tier
D. one unit of the S2 tier

Show Suggested Answer

Suggested Answer: A 🗳️

by d0bermannn at Dec. 31, 2021, 5:41 a.m.

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Kamilelo

Highly Voted 3 years, 4 months ago

Selected Answer: A

It's 24000 4kb messages per day, Free tier can handle 8000 0,5kb messages per day so it's not enought. Answer should be A

upvoted 13 times

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d0bermannn

Highly Voted 3 years, 5 months ago

Selected Answer: A

Do anybody really use free ter in prod.env? For me ans must be B1=A

upvoted 6 times

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feyey

Most Recent 2 years, 1 month ago

Selected Answer: A

The S1 tier provides the ability to perform bulk device operations and allows up to 400,000 messages per day. With 1,000 devices sending one message per hour, the total number of messages per day will be 24,000 (1000 devices * 24 hours). Each message is 4 KB, which translates to a total of 96 MB of data per day (24,000 messages * 4 KB). This is well within the message limit of the S1 tier (which allows up to 8,000,000 messages per month). Additionally, the S1 tier is a cost-effective option, as it is designed for moderate-scale solutions and provides a balance between cost and features. The free tier does not support bulk device operations, and the B1 and S2 tiers are designed for larger-scale solutions and are more expensive. Therefore, deploying one unit of the S1 tier will meet the requirements of the Azure IoT solution while minimizing costs.

upvoted 1 times

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PreetDP900

2 years, 2 months ago

So what is right answer??? I know i want to go for A as Free tier can't be used for prod environment.

upvoted 2 times

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longnt

2 years, 11 months ago

Selected Answer: A

Free tier message meter size is 0.5KB, it count 8 message for 4KB size. So in one hour 1000 device need 8000 messages, which use up all message/day of Freet tier, not enough.

upvoted 3 times