Microsoft Certified Azure Fundamentals Exam (AZ-900) Questions and Answers.

Microsoft Certified Azure Fundamentals
Exam (AZ-900) Questions and Answers
Question 1
What are some computing services offered by a Cloud Provider?
Correct Answer
•Compute power - e.g. Servers or web applications
•Storage - e.g. Files and Databases
•Networking - e.g. secure connections between the cloud provider and on-
premises.
•Analytics - e.g. visual telemetry and performance data



Question 2
Jim the systems admin at a fictitious company is an absolute control freak! From the
list below, choose the most appropriate cloud solution for him:
a). Virtual Machines
b). Containers
c). Serverless compute
Correct Answer
ANSWER: a). Virtual Machines. Because he will emulate a physical system, Jim can
do whatever he likes (e.g. install software, configure updates etc.)



Question 3
Give the simplest definition of a container.
Correct Answer
A container is similar to a VM but it doesn't need a guest operating system.




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,Question 4
What is Serverless Computing?
Correct Answer
Serverless computing lets you run application code(e.g. functions) without creating,
configuring, or maintaining a server. When compared to VMs and Containers, it is
the lightest and fastest deployment method.



Question 5
Rob is new to cloud computing and is confused by the terms: "Vertical Scaling" and
"Horizontal" scaling. Give him a brief rundown on the differences between the two!
Correct Answer
Vertical scaling: aka "scaling up", is the process of adding resources to increase the
power of an existing server. Some examples of vertical scaling are: adding more
CPUs, or adding more memory.

Horizontal scaling: aka "scaling out", is the process of adding more servers that
function together as one unit. For example, you have more than one server
processing incoming requests



Question 6
Define: Scalability as it relates to cloud computing
Correct Answer
You can increase or decrease the resources and services used based upon the needs
of your organization.



Question 7
Define: Elasticity as it relates to cloud computing

Correct Answer
As your workload changes due to a spike or drop in demand, a cloud computing
system can compensate by automatically adding or removing resources. (e.g. a
web-site during Black Friday Sale)




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,Question 8
Define: redundancy as it relates to cloud computing
Correct Answer
If one component fails, another is available to take its place and its workload.



Question 9
Define: fault-tolerance as it relates to cloud computing
Correct Answer
Customers and end-users are not impacted when a disaster occurs.



Question 10
Misha the cloud computing class nerd wants to engage you in a discussion on
Economies of Scale. Start the conversation off with an adequate definition and an
example.
Correct Answer
Economies of scale is the ability to do things more efficiently or at a lower-cost
per unit when operating at a larger scale. In other words, more money is saved,
when production rates are higher. Users also pay less for power consumption,
cooling and network connectivity than they would with on-premises infrastructure.



Question 11
Compare / Contrast CapEx(Capital Expenditure) vs. OpEx(Operational Expenditure)
Correct Answer
•Capital Expenditure: the spending of money on physical infrastructure up front,
and then deducting that expense from your tax bill over time. CapEx is an upfront
cost, which has a value that reduces over time.
•Operational Expenditure: spending money on services or products now and
being billed for them now. You can deduct this expense from your tax bill in the
same year. There's no upfront cost. You pay for a service or product as you use it.




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, Question 12
What is the primary benefit of CapEx?
Correct Answer
Fixed Costs and a predictable expense for your budget! Companies on a tight
budget will lean here.



Question 13
What is the primary benefit of OpEx?
Correct Answer
Grows if demand is increased and shrinks accordingly. For new companies / startups
this will make lots of sense.



Question 14
What is Cloud agility?
Correct Answer
Cloud agility is the ability to rapidly change an IT infrastructure to adapt to the
evolving needs of the business. For e.g. if your service peaks one month, you can
scale to demand and pay a larger bill for the month. If the following month the
demand drops, you can reduce the used resources and be charged less. This agility
lets you manage your costs dynamically, optimizing spending as requirements
change.



Question 15
Describe the Public Cloud
Correct Answer
Microsoft Azure is a public cloud provider. There is no local hardware to manage or
keep up-to-date - everything runs on your cloud provider's hardware. In some
cases, you can save additional costs by sharing computing resources with other
cloud users.




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