Microsoft Certified Azure Fundamentals Exam (AZ-900) ACTUAL UPDATED
QUESTIONS AND CORRECT ANSWERS
What are some computing services offered by a Cloud •Compute power - e.g. Servers or web applications
Provider? •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
Jim the systems admin at a fictitious company is an ANSWER: a). Virtual Machines. Because he will emulate a physical system, Jim can
absolute control freak! From the list below, choose the do whatever he likes (e.g. install software, configure updates etc.)
most appropriate cloud solution for him:
a). Virtual Machines
b). Containers
c). Serverless compute
Give the simplest definition of a container. A container is similar to a VM but it doesn't need a guest operating system.
What is Serverless Computing? 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.
Rob is new to cloud computing and is confused by the Vertical scaling: aka "scaling up", is the process of adding resources to increase
terms: "Vertical Scaling" and "Horizontal" scaling. Give the power of an existing server. Some examples of vertical scaling are: adding
him a brief rundown on the differences between the two! 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
Define: Scalability as it relates to cloud computing You can increase or decrease the resources and services used based upon the
needs of your organization.
Define: Elasticity as it relates to cloud computing 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)
Define: redundancy as it relates to cloud computing If one component fails, another is available to take its place and its workload.
Define: fault-tolerance as it relates to cloud computing Customers and end-users are not impacted when a disaster occurs.
Misha the cloud computing class nerd wants to engage Economies of scale is the ability to do things more efficiently or at a lower-cost
you in a discussion on Economies of Scale. Start the per unit when operating at a larger scale. In other words, more money is saved,
conversation off with an adequate definition and an when production rates are higher. Users also pay less for power consumption,
example. cooling and network connectivity than they would with on-premises
infrastructure.
, Compare / Contrast CapEx(Capital Expenditure) vs. •Capital Expenditure: the spending of money on physical infrastructure up front,
OpEx(Operational Expenditure) 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.
What is the primary benefit of CapEx? Fixed Costs and a predictable expense for your budget! Companies on a tight
budget will lean here.
What is the primary benefit of OpEx? Grows if demand is increased and shrinks accordingly. For new companies /
startups this will make lots of sense.
What is Cloud agility? 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.
Describe the Public Cloud 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.
Give one example of where you would use a public Deploy a website or blog. The web-server is handled by the cloud provider. You
cloud solution only worry about managing the site itself.
Give three disadvantages to using a public cloud model. •Security Requirements
• Government Policies
• Business requirements for a legacy software / application.
Describe the Private Cloud In a private cloud, you create a cloud environment in your own datacenter and
provide self-service access to compute resources to users in your organization
(You take the place of Microsoft Azure).
Give one example of where you would use a private An organization has data that cannot be put in the public cloud, perhaps for legal
cloud solution reasons. An e.g. may be where government policy requires specific data to be
kept in-country or privately.
Give three disadvantages to using a private cloud model. •Initial CapEx costs and must purchase the hardware for startup and maintenance
• Owning the equipment limits agility - to scale you must buy, install, and setup
new hardware
• Private clouds require IT skills and expertise.
Describe the Hybrid Cloud Combine public and private cloud(on premises data-center). Simple as that.
QUESTIONS AND CORRECT ANSWERS
What are some computing services offered by a Cloud •Compute power - e.g. Servers or web applications
Provider? •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
Jim the systems admin at a fictitious company is an ANSWER: a). Virtual Machines. Because he will emulate a physical system, Jim can
absolute control freak! From the list below, choose the do whatever he likes (e.g. install software, configure updates etc.)
most appropriate cloud solution for him:
a). Virtual Machines
b). Containers
c). Serverless compute
Give the simplest definition of a container. A container is similar to a VM but it doesn't need a guest operating system.
What is Serverless Computing? 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.
Rob is new to cloud computing and is confused by the Vertical scaling: aka "scaling up", is the process of adding resources to increase
terms: "Vertical Scaling" and "Horizontal" scaling. Give the power of an existing server. Some examples of vertical scaling are: adding
him a brief rundown on the differences between the two! 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
Define: Scalability as it relates to cloud computing You can increase or decrease the resources and services used based upon the
needs of your organization.
Define: Elasticity as it relates to cloud computing 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)
Define: redundancy as it relates to cloud computing If one component fails, another is available to take its place and its workload.
Define: fault-tolerance as it relates to cloud computing Customers and end-users are not impacted when a disaster occurs.
Misha the cloud computing class nerd wants to engage Economies of scale is the ability to do things more efficiently or at a lower-cost
you in a discussion on Economies of Scale. Start the per unit when operating at a larger scale. In other words, more money is saved,
conversation off with an adequate definition and an when production rates are higher. Users also pay less for power consumption,
example. cooling and network connectivity than they would with on-premises
infrastructure.
, Compare / Contrast CapEx(Capital Expenditure) vs. •Capital Expenditure: the spending of money on physical infrastructure up front,
OpEx(Operational Expenditure) 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.
What is the primary benefit of CapEx? Fixed Costs and a predictable expense for your budget! Companies on a tight
budget will lean here.
What is the primary benefit of OpEx? Grows if demand is increased and shrinks accordingly. For new companies /
startups this will make lots of sense.
What is Cloud agility? 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.
Describe the Public Cloud 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.
Give one example of where you would use a public Deploy a website or blog. The web-server is handled by the cloud provider. You
cloud solution only worry about managing the site itself.
Give three disadvantages to using a public cloud model. •Security Requirements
• Government Policies
• Business requirements for a legacy software / application.
Describe the Private Cloud In a private cloud, you create a cloud environment in your own datacenter and
provide self-service access to compute resources to users in your organization
(You take the place of Microsoft Azure).
Give one example of where you would use a private An organization has data that cannot be put in the public cloud, perhaps for legal
cloud solution reasons. An e.g. may be where government policy requires specific data to be
kept in-country or privately.
Give three disadvantages to using a private cloud model. •Initial CapEx costs and must purchase the hardware for startup and maintenance
• Owning the equipment limits agility - to scale you must buy, install, and setup
new hardware
• Private clouds require IT skills and expertise.
Describe the Hybrid Cloud Combine public and private cloud(on premises data-center). Simple as that.
