Exam 70-487 topic 1 question 78 discussion

Actual exam question from Microsoft's 70-487

Question #: 78
Topic #: 1

You are developing a Microsoft Azure web application. The application will be deployed to 10 web role instances. A minimum of 8 running instances is needed to meet scaling requirements.
You need to configure the application so that upgrades are performed as quickly as possible, but do not violate scaling requirements.
How many upgrade domains should you use?

A. 1
B. 2
C. 5
D. 10

Show Suggested Answer

Suggested Answer: B 🗳️
The .csdef is only used for Cloud Services, not for VMs. So regardless of what you set or even how you try to do it, Azure VM UDs come in groups of 5. With 8
VMs, that means you'll have 2 UDs.

by nfgmaia at Nov. 29, 2019, 6:21 p.m.

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nfgmaia

Highly Voted 5 years, 7 months ago

Correct answer is C (5 update domains). The question mentions a web role (which is a cloud service with a .csdef on which it's possible to configure the amount of UD's - up to a maximum of 20).

upvoted 30 times

GabF

5 years ago

I agree. See: https://docs.microsoft.com/en-us/azure/cloud-services/cloud-services-update-azure-service Section: "Distribution of roles across upgrade domains"

upvoted 3 times

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abalone

Highly Voted 5 years, 6 months ago

yes answer is 5.

upvoted 12 times

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pizzaHawai

Most Recent 4 years, 5 months ago

how to calculate: 10 - 8 = 2 10/2 -> 5 So C is correct.

upvoted 3 times

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mr_

4 years, 11 months ago

Agreed. 5 because each of the upgrade domains would have 2 web roles then (10 web roles divided into 5 upgrade domains -> 2 web roles per each upgrade domain). In that scenario when one upgrade domain will be down for upgrading then only 2 web roles will be down and remaining 8 will be up-and-running.

upvoted 8 times

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