Microsoft Azure Fundamentals: Describe cloud concepts Flashcards
Define Disaster Recovery
Ability to recover major incidents. May require manual intervention.
Define Elasticity
Define Scalability
Increase/decrease resources based on demand.
Give two examples of Hybrid Cloud Infastructure.
Private and Public Cloud
On Premises Infastructure and public cloud
Most commonly used.
You need to configure a virtual machines vertically.
What should you do ?
Add Compute and memory resources to each machine.
Best Solution for hardware running a customized database
IaaS
Custamizable key word
Best Solution for using a calendar to schedule meetings
SaaS
Best Solution for Business services analyzing marketing
PaaS
Platform to build
Demand on a server increases. You want to add a second a server to spread the load. This is known as…?
Horizontal Scaling
Which components are the responsibility of the user vs provider for PaaS
OS - Provider
Storage - Provider
Virtualization - Provider
Apps - User
Data - User
What cloud model requires infastructure to be on a private network
Private
You need to:
* Host web apps
* keep hardware and management to a minimum
* Be highly scalable.
What is the Appropriate Cloud model ?
Public Cloud Model
You need to maintain control over hardware and infastructure. Solution can be physically offsite.
What is the Appropriate Cloud model ?
Private Cloud Model
You need to use custom SaaS, minimize costs and keep data on site.
Appropriate Cloud model ?
Hybrid Cloud Model
What kind of service is a virtual machine
IaaS
Define Vertical Scaling
Scaling up by adding resources to increase the power of an existing resource. E.g. CPU and Memory.
Define Horizontal Scaling
Scaling across and increasing the amount of resources availible.
Define Cloud Agility
The ability to react quickly to allocate and de allocate cloud resources
Define fault tolerance
The property that enables a system to continue operating properly in the event of the failure. Backups!!
How is fault tolerance beneficial for customers ?
Backup components ensures customers aren’t affected when incidents happen
Define economies of scale
The ability to do things at a lower cost per unit on larger scales.
Define IaaS
Instant computing infrastructure over the internet. Basically renting servers, VMs, storage and networks
Define PaaS
PaaS provides a complete development and deployment environment int he cloud, i.e. building apps
Define SaaS
Software is hosted and managed for the customer
What are some potential downsides of Public cloud
Meeting security requirements
Meet compliance requirements
Lack of Hardware ownership therefore less management.
What do you call a snapshot of a running VM?
An image
What are the advantages of private cloud
Control over resources and security.
Can meet strict security, compliance and legal requirements.
Gives some common scenarios in which to use IaaS
Migrating workloads
Test and development
Website hosting
Storage, backup, and recovery
What is the http address of the global Azure portal
portal.azure.com
Define High Availability
The ability to keep cloud resources and services functioning for long periods of time
Which of the following is true when it comes to SaaS (Software as a service)?
You are responsible for scalability of the solution
You are responsible for the maintenance of the underlying hardware
You are responsible for configuring the solution
You are responsible for high availability of the solution
You are responsible for configuring the solution
You want to ensure that an application survives a region wide failure in Azure. Which of the following concept needs to be considered to fulfil this requirement?
Scalability Disaster Recovery Agility Elasticity
Disaster Recovery
Which of the following is a feature of the Azure SQL Data warehouse architecture?
High Availability Scalability Disaster Recovery Visualization
Scalability
A company is planning on creating several SQL Databases in Azure. They would be using the Azure SQL Database service. Which of the following is the right category to which the Azure SQL Database service belongs to?
Infrastructure as a service (IaaS) Platform as a service (PaaS) Software as a service (SaaS) Function as a service (FaaS)
PaaS
A company is planning on using Azure Storage Accounts. They have the following requirement: Replication of data to another region.
Can the Azure storage account automatically replicate data to another region?
Azure geo-redundant storage (GRS) replicates data to a secondary region automatically.
A company is planning on hosting a set of resources in their Azure subscription. They are currently aware that most Azure Service can provide an SLA of 99.9%. Which of the following technique could be used to increase the uptime for resources hosted in Azure?
Adding resources to multiple regions Adding resources to the same data center Adding resources to the same resource group Adding resources to the same subscription
Adding resources to multiple regions
An application consists of a set of virtual machines hosted in a Virtual Network. In a month, the application seems to have a load of around 20% for 3 weeks. During the last week the load on the application reaches 80%. Which of the following concept would you implement to ensure that cost and efficiency of the underlying application infrastructure?
High availability Elasticity Disaster recovery Fault tolerance
Elasticity
Key word is efficiency
Under which of the following cloud computing models would the Azure “Content Delivery” service fall into?
Infrastructure as a service (IaaS) Platform as a service (PaaS) Software as a service (SaaS) Function as a service (FaaS)
PaaS
Delivering a platform.
A company is planning on setting up a private cloud network. Which of the following is an advantage of setting up a private cloud network?
- A Private Cloud environment can only support an Infrastructure as a service model.
- A Private Cloud environment can only support a Platform as a service model.
- The Private Cloud environment can be rolled out to the general public
- The Private Cloud environment can be rolled out to select users
The Private Cloud environment can be rolled out to select users
Your company is planning on using the Azure App Service (PaaS) to host their set of web applications. Does Azure provide you full control over the operating system that hosts the web applications?
No
Your company is planning on using the Azure App Service (PaaS) to host their set of web applications. Does Azure provide the ability to scale the platform automatically?
Yes
A company wants to migrate their current on-premise servers to Azure. They want to ensure that the servers are running even if a single Azure Data Center goes down. Which of the following terms refers to the solution that needs to be in place to fulfill this requirement?
Fault tolerance Elasticity Scalability Low Latency
Fault tolerance
A company wants to host an application on a set of Virtual Machines. The application must be made available 99.99 percent of the time. In order to comply with the SLA requirement, what is the minimum number of Virtual Machines that should be used to host the application?
1 2 3 4
2
Which of the following terms refer to making a service available with no downtime for an extended period of time?
Agility Fault tolerance High availability
High availability
Which cloud model provides the greatest degree of ownership and control?
Hybrid Private Public
Private
Which cloud model provides the greatest degree of flexibility?
Public Private Hybrid
Hybrid
Which of the following describes a benefit of cloud services?
Economies of scale Fixed workloads Unpredictable costs
Economies of scale
Microsoft Office 365 is an example of?
Infrastructure as a Service Platform as a Service Software as a Service
SaaS
Which of the following describes Platform as a Service (PaaS)?
- Users are responsible for purchasing, installing, configuring, and managing their own software (operating systems, middleware, and applications).
- Users create and deploy applications quickly without having to worry about managing the underlying infrastructure.
- Users pay an annual or monthly subscription
Users create and deploy applications quickly without having to worry about managing the underlying infrastructure.
Which of the following requires the most user management of the cloud services?
Infrastructure as a Service Platform as a Service Software as a Service
IaaS
You’re developing an application and want to focus on building, testing, and deploying. You don’t want to worry about managing the underlying hardware or software. Which cloud service type is best for you?
Infrastructure as a Service (IaaS) Software as a Service (SaaS) Platform as a Service (PaaS)
PaaS
You plan to migrate several servers from an on-premises network to Azure. What is an advantage of using a public cloud service for the servers over an on-premises network?
- The public cloud is owned by the public, NOT a private corporation
- The public cloud is a crowd-sourcing solution that provides corporations with the ability to enhance the cloud
- All public cloud resources can be freely accessed by every member of the public
- The public cloud is a shared entity whereby multiple corporations each use a portion of the resources in the cloud
The public cloud is a shared entity whereby multiple corporations each use a portion of the resources in the cloud.
In which type of cloud model are all the hardware resources owned by a third-party and shared between multiple tenants?
private
hybrid
public
Public
You have 50 virtual machines hosted on-premises and 50 virtual machines hosted in Azure. The on-premises virtual machines and the Azure virtual machines connect to each other. Which type of cloud model is this?
hybrid private public
Hybrid
Azure Cosmos is an example of…
PaaS
What are two characteristics of the public cloud?
dedicated hardware unsecured connections limited storage metered pricing self-service management
metered pricing
self-service management
Which of the following ensures data-residency and compliance needs are met for customers who need to keep their data and applications close?
Geographies Regions Zones
Geographies
Microsoft Azure datacenters are organized and made available by?
Geographies Regions Zones
Regions
You plan to migrate a web application to Azure. The web application is accessed by external users. You need to recommend a cloud deployment solution to minimize the amount of administrative effort used to manage the web application. What should you include in the recommendation?
Software as a Service (SaaS) Platform as a Service (PaaS) Infrastructure as a Service (IaaS) Database as a Service (DaaS)
PaaS
You plan to provision Infrastructure as a Service (IaaS) resources in Azure. Which resource is an example of IaaS?
an Azure web app an Azure virtual machine an Azure logic app an Azure SQL database
Azure VM
You have an on-premises network that contains several servers. You plan to migrate all the servers to Azure. You need to recommend a solution to ensure that some of the servers are available if a single Azure data center goes offline for an extended period. What should you include in the recommendation?
fault tolerance elasticity scalability low latency
Fault tolerance
Your company hosts an accounting application named App1 that is used by all the customers of the company. App1 has low usage during the first three weeks of each month and very high usage during the last week of each month. Which benefit of Azure Cloud Services supports cost management for this type of usage pattern?
high availability high latency elasticity load balancing
elasticity
To which cloud models can you deploy physical servers?
private cloud and hybrid cloud only private cloud only private cloud, hybrid cloud and public cloud hybrid cloud only
private cloud and hybrid cloud only
An Azure web app that queries an on-premises Microsoft SQL server is an example of a ______ cloud.
hybrid multi-vendor private public
Hybrid
You have 1,000 virtual machines hosted on the Hyper-V hosts in a data center. You plan to migrate all the virtual machines to an Azure pay-as-you-go subscription. You need to identify which expenditure model to use for the planned Azure solution.
Which expenditure model should you identify?
operational elastic capital scalable
Operational
Your company plans to migrate all its data and resources to Azure. The company’s migration plan states that only Platform as a Service (PaaS) solutions must be used in Azure. You need to deploy an Azure environment that meets the company migration plan. Solution: You create an Azure App Service and Azure SQL databases.
Does this meet the goal?
Yes
Your company plans to migrate all its data and resources to Azure. The company’s migration plan states that only Platform as a Service (PaaS) solutions must be used in Azure. You need to deploy an Azure environment that meets the company migration plan. Solution:
You create an Azure App Service and Azure virtual machines that have Microsoft SQL Server installed.
Does this meet the goal?
No
VMs are considered infrastructure.
A company is planning on hosting their resources within Microsoft Azure. Management wants to know the Capital Expenditure (CapEx) and Operational Expenditure (OpEx) costs that would be incurred if they migrated their entire IT infrastructure to Microsoft Azure. Does Microsoft Azure provide flexibility to companies when it comes to Capital Expenditures (CapEx) and Operational Expenditures (OpEx)?
Yes
What’s the difference between scalability and elasticity ?
Scalability Manual Scaling.
Elasticity scales automatically to meet sudden demands.
Where will a private clouds infrastructure be located ?
On a private network
What is a region pair ?
Two paired data centers in the same geographic area at least 300 miles away
Where are availibilty sets located ?
Same data center in two different fault domains (rack of servers)
Which Azure feature enhances manageability and realibility by provisioning instances based om workload ?
Azure Autoscale
In a public cloud model who is responsible for installing critical updates on a VM ?
Customer
What is an availability zone ?
A physically separate zone within an Azure region
What are the benefits of availability zones ?
Zone redundant services
What are zone redundant services ?
If a zone becomes unavailable, you app can fail over into another availability zone without interruption
For IaaS, what is the subscriber responsible for ?
Apps
Data
Run time
Middle ware
OS
For IaaS, what is the provider responsible for ?
Virtualization
servers
storage
Physical Networking
What is a Service Level of Agreement (SLA) ?
Guarantee uptime of resources, usually stated as a percentage.
Who is responsible for the management of accounts ?
The User, in all service options.
What is Cloud Bursting
Cloud based resources come online to address increased workloads.
What are Spot instances ?
Taking adavantage of unutilized compute capacity to perform tasks, hence reducing costs.
In a public cloud model, who is responsible for installing critical updates on VMs ?
Customer
Which one of these statements best describes cloud computing?
- Cloud service providers lease expensive server hardware for long-term rentals.
- Customers hire service providers to build a cloud their corporate location.
- Cloud service providers offer computing resources to customers as a service.
- Customers host their applications using traditional IT stacks on vendor hardware.
Cloud service providers offer computing resources to customers as a service.
What are the four basic characteristics of cloud computing?
resource pooling, elasticity, pay per use, and automation
What type of cloud configuration enables Cloud Burst?
Hybrid
What is cloud bursting ?
A configuration that’s set up between a private cloud and a public cloud to deal with peaks in IT demand
What is Scalability an attribute of ?
The application
What is elasticity an attribute of ?
The infastructure
What attribute of the cloud allows the application to continue running without disruption because of instantaneous problems within a system?
Fault tolerance
What is the customer always responsible for ?
Data
What is the cloud provider always responsible for ?
Underlying Physical Infrastructure
