AZ-900 PRACTICE EXAM QUESTIONS & ANSWERS
Which 2 attributes are characteristics of private cloud deployment model?
a. Hardware must be purchased
b Company has complete control over physical resources and security
c. Apps provisioned/deprovisioned quickly
d. Pay-as-you-go - Answers - a, b
Private clouds require that hardware must be purchased for start-up and maintenance -
organizations also control all resources and security in this case. Quick provisioning and
pay-as-you-go models are public cloud traits.
Deploying and configuring cloud-based resources quickly as business requirements
change is called...?
a. agility
b. scalability
c. elasticity
d. high availability - Answers - a
Agility - deploy/configure cloud-based resources quickly.
Scalability - add CPU or RAM to a configuration
Elasticity - autoscale to handle high/low volume of traffic
High Availability - continuous user experience with no downtime.
Which cloud deployment model are you using if you have servers physically located at
your organization's on-site datacenter and you migrate a few servers to the cloud?
a. private cloud
b. public cloud
c. hybrid cloud - Answers - c
Hybrid cloud combines public and private by allowing data and apps to be shared
between them.
Why is cloud computing often less expensive than on-premises datacenters?
a. you are only billed for what you use
b. network bandwidth is free
c. cloud service offerings have limited functionality
d. services are only offered in a single geographical location - Answers - a
Charges can be incurred depending on network bandwidth, cloud services are flexible
and the providers offer service globally.
What are 2 basic services provided by all cloud providers? - Answers - c, d
All cloud providers provide compute and storage services. Colocation is when a
business rents space in a shared physical datacenter. Application development is the
responsibility of the customer and is typically done either in-house or through 3rd party.
Increasing compute capacity for an app by adding instances of resources such as
virtual machines is called...?
a. vertical scaling
,b. horizontal scaling
c. elasticity
d. high availability - Answers - b
Horizontal scaling is the act of adding more instances of resources.
What are cloud-based backup services, data replication and geo-distribution features
of?
a. disaster recovery plan
b. elastic application configuration
c. cost reduction plan
d. hybrid cloud deployment - Answers - a
Disaster recovery uses the services mentioned to keep data and code safe in the event
of a disaster.
What is high availability in a public cloud environment dependent on?
a. the service level agreement (SLA) that you choose
b. the vertical scalability of an app
c. cloud-based backup retention limits
d. capital expenditures - Answers - a
Different services have different SLAs. Sometimes different tiers of the same service will
offer different SLAs, which can increase or decrease the promised availability.
In cloud computing [answer choice] allows you to deploy applications to regional
datacenters around the world.
a. high availability
b. disaster recovery
c. geo-location
d. elasticity - Answers - c
You can deploy apps and data to regional datacenters around the globe, thereby
ensuring that your customers always have the best performance in their region. This is
referred to as geo-location.
Which cloud service model provides you with the most control over the hardware that
runs applications?
a. infrastructure as a service (IaaS)
b. platform as a service (PaaS)
c. software as a service (SaaS) - Answers - a
IaaS is the most flexible category of cloud services. It aims to give you complete control
over the hardware that runs applications. Users do not control the OS and do not
configure the underlying servers in PaaS. With SaaS, you are using as-is software
hosted in the cloud, instead of creating a platform to host a software yourself.
In a platform as a service (PaaS) model, which 2 components are the responsibility of
the cloud service provider?
a. operating system
b. physical network
, c. user access
d. information and data - Answers - a, b
In PaaS, the cloud provider is responsible for the OS, physical datacenter, physical
hosts and physical network. In PaaS, the customer is responsible for accounts and
identities.
Your organization is building a custom application. You need to focus on application
development rather than configuration and management of servers. Which cloud
service model should you use?
a. infrastructure as a service (IaaS)
b. platform as a service (PaaS)
c. software as a service (SaaS) - Answers - b
With PaaS, users can focus on application development because the cloud provider
handles all the platform management. In SaaS, the cloud provider manages all aspects
of the application environment, such as virtual machines, networking resources, data
storage and applications. IaaS is the closest service model to managing physical
servers.
Which cloud service model is used by Azure SQL Database?
a. infrastructure as a service (IaaS)
b. platform as a service (PaaS)
c. software as a service (SaaS) - Answers - b
platform as a service (PaaS)
You have an Azure virtual machine that is accessed between 9AM and 5PM daily. What
should you do to minimize costs but preserve the associated hard disks and data?
a. deallocate the virtual machine
b. delete the virtual machine
c. resize the virtual machine
d. implement Privileged Identity Management - Answers - a
If you have virtual machine workloads that are only used during certain periods, but you
run them every hour of every day, then you are wasting money. These virtual machines
are great candidates to deallocate when not in use and start back up when required to
save on compute costs.
You need to associate the costs of resources to different groups within an organization
without changing the location of the resources. What should you use?
a. resource tags
b. resource groups
c. subscriptions
d. administrative units - Answers - a
Resource tags can be used to group billing data and categorize costs by runtime
environment, such as billing usage for virtual machines running in a production
environment.
What is an Azure Storage account named storage001 an example of?
Which 2 attributes are characteristics of private cloud deployment model?
a. Hardware must be purchased
b Company has complete control over physical resources and security
c. Apps provisioned/deprovisioned quickly
d. Pay-as-you-go - Answers - a, b
Private clouds require that hardware must be purchased for start-up and maintenance -
organizations also control all resources and security in this case. Quick provisioning and
pay-as-you-go models are public cloud traits.
Deploying and configuring cloud-based resources quickly as business requirements
change is called...?
a. agility
b. scalability
c. elasticity
d. high availability - Answers - a
Agility - deploy/configure cloud-based resources quickly.
Scalability - add CPU or RAM to a configuration
Elasticity - autoscale to handle high/low volume of traffic
High Availability - continuous user experience with no downtime.
Which cloud deployment model are you using if you have servers physically located at
your organization's on-site datacenter and you migrate a few servers to the cloud?
a. private cloud
b. public cloud
c. hybrid cloud - Answers - c
Hybrid cloud combines public and private by allowing data and apps to be shared
between them.
Why is cloud computing often less expensive than on-premises datacenters?
a. you are only billed for what you use
b. network bandwidth is free
c. cloud service offerings have limited functionality
d. services are only offered in a single geographical location - Answers - a
Charges can be incurred depending on network bandwidth, cloud services are flexible
and the providers offer service globally.
What are 2 basic services provided by all cloud providers? - Answers - c, d
All cloud providers provide compute and storage services. Colocation is when a
business rents space in a shared physical datacenter. Application development is the
responsibility of the customer and is typically done either in-house or through 3rd party.
Increasing compute capacity for an app by adding instances of resources such as
virtual machines is called...?
a. vertical scaling
,b. horizontal scaling
c. elasticity
d. high availability - Answers - b
Horizontal scaling is the act of adding more instances of resources.
What are cloud-based backup services, data replication and geo-distribution features
of?
a. disaster recovery plan
b. elastic application configuration
c. cost reduction plan
d. hybrid cloud deployment - Answers - a
Disaster recovery uses the services mentioned to keep data and code safe in the event
of a disaster.
What is high availability in a public cloud environment dependent on?
a. the service level agreement (SLA) that you choose
b. the vertical scalability of an app
c. cloud-based backup retention limits
d. capital expenditures - Answers - a
Different services have different SLAs. Sometimes different tiers of the same service will
offer different SLAs, which can increase or decrease the promised availability.
In cloud computing [answer choice] allows you to deploy applications to regional
datacenters around the world.
a. high availability
b. disaster recovery
c. geo-location
d. elasticity - Answers - c
You can deploy apps and data to regional datacenters around the globe, thereby
ensuring that your customers always have the best performance in their region. This is
referred to as geo-location.
Which cloud service model provides you with the most control over the hardware that
runs applications?
a. infrastructure as a service (IaaS)
b. platform as a service (PaaS)
c. software as a service (SaaS) - Answers - a
IaaS is the most flexible category of cloud services. It aims to give you complete control
over the hardware that runs applications. Users do not control the OS and do not
configure the underlying servers in PaaS. With SaaS, you are using as-is software
hosted in the cloud, instead of creating a platform to host a software yourself.
In a platform as a service (PaaS) model, which 2 components are the responsibility of
the cloud service provider?
a. operating system
b. physical network
, c. user access
d. information and data - Answers - a, b
In PaaS, the cloud provider is responsible for the OS, physical datacenter, physical
hosts and physical network. In PaaS, the customer is responsible for accounts and
identities.
Your organization is building a custom application. You need to focus on application
development rather than configuration and management of servers. Which cloud
service model should you use?
a. infrastructure as a service (IaaS)
b. platform as a service (PaaS)
c. software as a service (SaaS) - Answers - b
With PaaS, users can focus on application development because the cloud provider
handles all the platform management. In SaaS, the cloud provider manages all aspects
of the application environment, such as virtual machines, networking resources, data
storage and applications. IaaS is the closest service model to managing physical
servers.
Which cloud service model is used by Azure SQL Database?
a. infrastructure as a service (IaaS)
b. platform as a service (PaaS)
c. software as a service (SaaS) - Answers - b
platform as a service (PaaS)
You have an Azure virtual machine that is accessed between 9AM and 5PM daily. What
should you do to minimize costs but preserve the associated hard disks and data?
a. deallocate the virtual machine
b. delete the virtual machine
c. resize the virtual machine
d. implement Privileged Identity Management - Answers - a
If you have virtual machine workloads that are only used during certain periods, but you
run them every hour of every day, then you are wasting money. These virtual machines
are great candidates to deallocate when not in use and start back up when required to
save on compute costs.
You need to associate the costs of resources to different groups within an organization
without changing the location of the resources. What should you use?
a. resource tags
b. resource groups
c. subscriptions
d. administrative units - Answers - a
Resource tags can be used to group billing data and categorize costs by runtime
environment, such as billing usage for virtual machines running in a production
environment.
What is an Azure Storage account named storage001 an example of?
