Microsoft Certified Azure Fundamentals Exam (AZ-900)
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 Vertical scaling: aka "scaling up", is the process of adding resources to increase
the 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 more CPUs, or adding more memory.
two!
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
OpEx(Operational Expenditure) 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.
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).
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 Vertical scaling: aka "scaling up", is the process of adding resources to increase
the 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 more CPUs, or adding more memory.
two!
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
OpEx(Operational Expenditure) 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.
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).
