You are developing a Microsoft Azure web application. The application will be deployed to 20 web role
instances. A minimum of 18 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
Explanation:
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 18 VMs, that means you’ll have 5 UDs. UD0 – to – UD4 like the
following:
VMUpdate Domain
VM00
VM11
VM22
VM33
VM44
VM50VM61
VM72
VM83
VM94
VM100
VM111
VM122
VM133
VM144
VM150
VM161
VM172
This is D, 10
7
0
I agree:
20 instances and 10 upgrade domains means 2 instances / upgrade domain.
Upgrading one instance domain at a time = 18 instances available.
3
0
answer should be 10.
the explanation is for VMs. which apperantly have always 5 upgrade domains.
but the question is web role instance which is cloud services. that can have max 20 upgrade domains.
1
0
Answer is D, 10.
1
0
10 is correct
Based on my understanding of upgrade domains, the correct answer is 10.
10 upgrade domains and 20 instances means each upgrade domain containing 2 instances. As we know updating a Cloud Service involves updating one upgrade domain at a time. With 10 upgrade domains that would mean 2 of the instances will be updated while remaining 18 will keep on working.
2
0
D it’s the right response.
Upgrade domain it’s a container of instances that go down for applying updates.
So with 2 instances per upgrade domaine we will be sure that only 2 instances are DOWN and the rest of 18 instances are up and running correctly.
1
0