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Azure Foundation Exam > AZ-900 > Flashcards

AZ-900 Flashcards

1
Q

What is High Availability?

A

High Availability refers to a set of technologies that minimize IT disruptions by providing business continuity of IT services through redundant, fault-tolerant, or failover-protected components inside the same data centre

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2
Q

What is Fault Tolerance?

A

FT describes how Azure will ensure you have zero downtime for their services

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3
Q

What is Disaster Recovery?

A

Disaster Recovery is a business continuity strategy that helps organizations secure data, applications, and workloads during planned or unplanned outages

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4
Q

What is scalability?

A

Scalability refers to scaling up or out to handle increased load.

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5
Q

What is elasticity?

A

Elasticity is the ability to quickly increase or decrease computer processing and resources. It is the ability of the system to scale automatically - basically auto-scaling

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6
Q

What is Capex vs Opex?

A

CapEx is money spent aquiring or maintaining fixed assets.

OpEx is the cost of running on a daily basis

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7
Q

What are IaaS, PaaS and Saas?

A

IaaS provides servers, storage and networking as a service.
PaaS is a superset of IaaS and includes middleware such as db management tools.
SaaS is a service built on top of PaaS, such as Office365

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8
Q

What are the pros and cons of private Cloud?

A

Pros:

  • complete control of your infrastructure
  • benefits of public Cloud
  • better security and privacy

Cons:

  • maintenance
  • staffing
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9
Q

What are the pros and cons of Public Cloud?

A

Pros:

  • no purchase of hardware
  • low monthly fees

Cons:

  • no control of features and versions
  • no physical access
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10
Q

What is Private Cloud?

A

The private cloud is defined as computing services offered either over the Internet or a private internal network and to selected users only instead of the general public.

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11
Q

What is Public Cloud?

A

Public Cloud is Azure, AWS, GCP. No upfront costs, but monthly usage costs. Little control over services and infrastructure

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12
Q

What is a Hybrid Cloud model?

A

Hybrid Cloud is the best of Public and Private, but can be complex

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13
Q

What are the Cloud Service models?

A

IaaS, PaaS and SaaS are the Cloud Service models.

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14
Q

What is the Azure Marketplace?

A

A means to use and integrate 3rd party products and services.

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15
Q

What are the Cloud Architecture models?

A

Private, Public and Hybrid are the Cloud Architecture models.

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16
Q

What is a region in Azure?

A

A region is a set of datacentres deployed within a latency-defined perimeter connected by a low-latency network.

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17
Q

What are paired regions?

A

Paired regions:

  • are in the same geographic area
  • enable failover from primary to secondary region
  • enable one region to be updated before its pair
  • some services use paired regions for replication
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18
Q

What is an Availability Zone?

A

AZs are individual physical locations within a region.

Each zone is made up of one or more datacentres equipped with independent power, cooling, and networking.

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19
Q

What are resource groups are what are the rules?

A

Resource Groups are containers for resources.

Every resource must be in a resource group.

Each resource can only exist in a single resource group.

Resources can be added or removed to a resource group at any time.
When a resource group is removed or deleted, all of the resources within it are deleted with it.

Resources can be moved from one resource group to another.

Resources from multiple regions can be in the same resource group.

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20
Q

What is ARM?

A

ARM is Azure Resource Manager.

The Azure Resource Manager is the common architectural layer which all commands must go through to interact with Azure resources. The Resource Manager manages all resources on Azure, and is the only tool that creates resources on Azure.

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21
Q

What are the benefits of ARM?

A

Group Resource handling - allow resources to be deployed, managed and monitored as a group.

Consistency - resources will be consistent

Access control - ARM makes it easier to assign access rights

Tagging - Tag resources to identify them for future scenarios and for billing purposes

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22
Q

What are the three foundational components of Cloud computing?

A

Compute, Networking and Storage are the three foundational components of Cloud computing

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23
Q

What ‘as-a-service’ are VMs?

A

VMs are part of IaaS because the hardware is emulated.

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24
Q

What are Azure Functions?

A

Azure Functions are single-task services that can take an input, process it, then die.

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25
Q

What are Azure VM scale sets?

A

Scale sets allow you to create and manage a group of Load Balanced VMs.

The number of VMs can automatically increase or decrease in response to demand or a defined schedule.

Scale sets provide high availability to your applications, and allow you to centrally manage, configure, and update a large number of VMs. With virtual machine scale sets, you can build large-scale services for areas such as compute, big data, and container workloads.

Scale sets are a set of identical VMS

The baseline VM is what is used to copy and scale up

The service itself is free and provides high availability

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26
Q

What is WVD?

A

WVD is a virtualised version of Windows that runs 100% in the Cloud.

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27
Q

What are the benefits of WVD?

A
  • WVD allows Window 10 licences to be re-used
  • Concurrency, multiple users can use the same VM instance
  • Access anywhere, Windows 10 can be used from any device that has a browser
  • Secure data, Azure Storage can be used to secure your data
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28
Q

What is Azure App Service?

A

App Service is a managed hosting service for web apps and mobile back-ends.

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29
Q

What is Azure Kubernetes Service?

A

Azure Kubernetes is an open-source tool for orchestrating and managing container images and applications.

Kubernetes service uses clusters and pods to scale and deploy applications.

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30
Q

In how many regions can a VNet be in?

A

A VNet belongs in a single region.

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31
Q

What is the benefit of using Subnets?

A

Subnets allow:

  • Resource Grouping - grouped resources are easier to oversee
  • Address Allocation - enabling a more efficient way to allocate addresses to resources on a smaller subnet.
  • Subnet Security - Network Security Groups can be used to secure individual subnets
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32
Q

What is a VPN used for?

A

A VPN is used to connect Cloud and on-premise infrastructure.

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33
Q

What does a VPN Gateway use to link an Azure VNet with on-premises infrastructure?

A

A VPN Gateway uses a VPN tunnel to send encrypted traffic from a VNet to on-premises infrastructure.

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34
Q

What is the difference between a VNet Gateway and a VPN Gateway?

A

A VNet gateway is a gateway into a virtual network.

A VPN gateway is a type of virtual network gateway. When you create a virtual network gateway resource in Azure, you can select the VPN or ExpressRoute gateway type in Azure.

A VPN gateway sends encrypted traffic between your virtual network and your on-premises location across a public connection. You can also use a VPN gateway to send traffic between virtual networks.

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35
Q

What is an Application Gateway?

A

An Application Gateway routes traffic based on content, not load. Unlike a Load Balancer which routes based on Load.

An AG works on the http request properties (url and host headers) rather than the IP address and port number.

AG’s support auto-scaling, end-to-end encryption, zone redundancy and multi-site hosting.

An application gateway is similar to a load balancer, but can redirect traffic based on attributes in the HTTP request, the request coming in from the internet. You can have a VM handling video, one handling images and so on. Application Gateways do not handle traffic security, nor manage any Virtual Networks.

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36
Q

What is Express Route?

A

Express Route is a means of directly connecting your on-premise infrastructure with Azure which does not use the internet.

Express Route enables a private, secure, high-bandwidth / low latency connection. However it is expensive.

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37
Q

What is a Vnet?

A

Azure virtual network enables Azure resources to securely communicate with each other, the internet, and on-premises networks.

Each VNet belongs to a single region and a single subscription.

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38
Q

What is a Load Balancer?

A

A Load Balancer distributes and balances the incoming traffic to an application or network.

A load balancer sits in front of two or more Virtual Machines to manage, and balance, the load to the Virtual Machines.

A Load Balancer uses IP addresses and port numbers to determining the receiving VM in the backend pool.

The max number of VMs to manage goes up to 1000. A load balancer ensures only healthy instances receive traffic and will stop sending traffic to any server that does not pass health checks. All ELB types can log traffic that passes through them.

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39
Q

What is a Content Delivery Network?

A

A CDN stores a cached version of your application on an Edge Node. This keeps a recent copy of your web application and can deliver this much faster to users close to an endpoint.

A CDN provides better performance and less traffic to your main server.

CDNs can handle a LOT more data than a typical web server, which makes it ideal to handle traffic spikes as well. CDNs don’t generally handle individual traffic routing rules nor security.

The content cache is updated as necessary.

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40
Q

What are the Blob Storage types?

A

Blobs store unstructured data. The Blob storage types are:

  • Block
  • Append
  • Page
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41
Q

What is Block blob storage?

A

Block storage is the storing of text and binary data up to 4.7TB and is made up of individually managed blocks of data.

Block blobs are used for handling large amounts of data very effectively.

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42
Q

What is an Append Blob?

A

Append blobs are Block blobs that are optimised for append operations. Append Blobs work well for logging where data is constantly appended.

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43
Q

What is a Page Blob?

A

A Page Blob is how disks are stored. Any part of the file could be accessed at any time, for example a virtual hard drive.

Page blobs are used for random read/write operations. Picture this like the computing-equivalent of having a scrap piece of paper, or ‘page’ on your desk to scribble notes on that you only need for temporary periods of time.

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44
Q

What are the three Blob Storage pricing tiers?

A

The Storage pricing tiers are:

  • Hot
  • Cool
  • Archive
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45
Q

What is the Hot Blob storage pricing tier?

A

The Hot pricing tier is for frequently accessed files. It has lower access times and higher access costs.

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46
Q

What is the Cool Blob storage pricing tier?

A

The Cool pricing tier has lower storage costs and higher access times. Data remains here for at least 30 days.

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47
Q

What is the Archive Blob storage pricing tier?

A

The Archive pricing tier has the lowest costs but highest access times.

Archive storage is a very cheap version of blob storage meant to store data that is very infrequently used, such as system backups.

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48
Q

What are the types of Azure Managed Disks?

A

There are 4 types of Azure Managed Disk:

  • HDD
  • Standard SSD
  • Premium SSD
  • UltraDisk
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49
Q

What are Blob containers?

A

Blob containers on Azure act similar to directories in a file system. They can contain an unlimited number of blobs.

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50
Q

What is Azure File Storage and when would you use it?

A

File storage is, as the name suggest, perfect for storing files of varying types and sizes.

Use file storage as an extension of your on-premises file systems to never run out of space and also prioritise what data you keep on-premises.

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51
Q

What is Disk Storage?

A

Disk storage is a full Virtual hard disk that you can access. It is usually attached to a Virtual machine. In fact, when you create a Virtual machine, disk storage is created too.

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52
Q

What must each Azure Storage account have?

A

Each storage account on Azure must have a unique name, as that is used to identify it on the Internet by giving it a web address.

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53
Q

What is Azure Managed Disk?

A

Azure manages the disks so you don’t have to worry about backup and uptime.

Azure guarantees size and performance as per the initial agreement.

It is easy to upgrade the disk size and type.

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54
Q

What is HDD Managed Disk?

A

HDD is a spinning Hard Drive. It is low cost and suitable for backups.

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55
Q

What is Standard SSD Managed Disk?

A

This is the production standard. It has higher reliability, scalability and lower latency than HDD.

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56
Q

What is Premium SSD Managed Disk?

A

Premium SSD is super fast and has high performance and very low latency. It can be used for critical workloads.

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57
Q

What is Ultra Disk Managed Disk?

A

To be used for the most demanding, data intensive workloads with disks available up to 64TB in size.

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58
Q

What are the Azure Databases?

A
  • Cosmos DB
  • Azure SQL
  • Azure DB for MySQL
  • Azure DB for PostgreSQL
  • Database Migration Services
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59
Q

What is Cosmos DB?

A

Cosmos DB is a globally scaled distributed database solution that offers very low latency, a range of tools to interact with the data and near-infinite scaling to handle demand.

Cosmos DB is not meant as a cheap storage service, nor for backup of data. Azure has Archive Data services for that.

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60
Q

What is the Azure Database Migration Service?

A

Using Azure Database Migration Service, you can migrate almost any kind of database to Azure SQL or SQL Server.

It is recommended by Azure to move your on-premises SQL Server instances to Azure SQL to improve efficiency and lower costs. It is not recommended to just migrate everything, as that is a case-by-case basis. Cosmos DB data is unlikely to match directly to Azure SQL.

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61
Q

What is Azure SQL?

A

Azure SQL is a fully managed service, which means Microsoft takes care of all the hardware and maintenance tasks for running the database. You only have to worry about using the database for storing and retrieving data.

Azure SQL is compatible with on-premise servers.

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62
Q

What are valid sources when migrating to Azure DB for MySQL using the Azure Database Service ?

A

Both MySQL and RDS MySQL are valid source databases when migrating to Azure DB for MySQL using the Azure Database Service

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63
Q

What databases are not currently supported migrating to Azure DB for MySQL?

A

Oracle and PostgreSQL are not currently supported when migrating to Azure DB for MySQL

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64
Q

How do Azure describe the power of a database?

A

The power of a database is how the data is sorted and indexed, as well as the flexibility in how to get the data out again. Databases are not cheaper, more secure, or more space-efficient than other types of storage.

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65
Q

What is Azure Database for MySQL?

A

Azure DB for MySQL is a very popular community driven open-source db. It is very robust and stable.

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66
Q

What is Azure database for PostgreSQL?

A

A very popular choice of relational database. It provides enterprise features like horizontal scaling.

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67
Q

What is Authentication?

A

Authentication is making sure you are you and confirming your identity. This is most commonly done using a username and password, but could also be with a fingerprint or face recognition.

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68
Q

What is Authorisation?

A

Authorisation is the provision of access and comes after authentication.

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69
Q

To how many AD tenants can a single user belong?

A

A single user can belong to a maximum of 500 Azure AD tenants as a member or a guest.

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70
Q

What is first provisioned when an Azure account is setup?

A

AAD is setup when an Azure account is setup.

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71
Q

What is a Tenant?

A

A tenant:

  • represents an organisation
  • is a dedicated instance of AAD that an organisation receives when signing-up to an Azure account
  • is completely separate from other AAD tenants
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72
Q

What is a subscription?

A
  • a billing entity, all resources within a subscription are billed together
  • cost separation, you can have multiple subscriptions within a tenant to separate costs
  • payment, if a subscription isn’t paid, all the resources and services will be stopped
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73
Q

What are the benefits of SSO with AAD?

A

If SSO is enabled you can seamlessly use applications without having to log in and utilise a single username and password.

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74
Q

What is Multi-factor authentication?

A

MFA is an extra layer of security using something you know, something you have and something you are.

75
Q

What service is also known as a form of ‘extreme PaaS’?

A

Azure Functions is a serverless service and is a form of extreme PaaS.

76
Q

What are examples of Iaas?

A

IaaS examples:

  • VMs
  • VNets
  • Storage
77
Q

What are examples of PaaS?

A

PaaS examples:

  • App Services
  • Azure CDN
  • Cosmos DB
78
Q

What are examples of SaaS?

A

SaaS examples:

- Microsoft 365

79
Q

In which Cloud Service model does the user have most of the responsibility?

A

IaaS gives the end user most of the responsibility, with SaaS the least

80
Q

What are the benefits of using Azure Marketplace?

A
  • It provides less maintenance overhead than creating your own service or application from scratch.
  • All offerings are certified by Microsoft
  • It allows you to venture into new markets by publishing on Marketplace
  • It is faster to build new projects by using ready-to-go services from the Marketplace
  • There is technical, design, and architectural support available when you list a service on the Marketplace
81
Q

What are the pros and cons of Hybrid Cloud?

A

Pros:

  • Avoid disruptions and outages
  • Adherence to regulations
  • Span both public and private Cloud
  • Alleviate CapEx investments

Cons:
- Complex infrastructure

82
Q

What is Azure Portal?

A

Azure Portal is the main means of managing your Azure resources.

83
Q

What is Azure CLI?

A

A text-only way to manage Azure resources. A stable, structured way to manage your Azure environment.

84
Q

What are ARM templates?

A

ARM Templates are a way to declare the objects you want, the types, names and properties in a JSON file which can be checked into source control and managed like any other code file.

ARM Templates are what really gives us the ability to roll out Azure “Infrastructure as code” … alternative to Terraform

85
Q

What is App Services?

A

App Services allows you to create web, mobile, API and logic apps.

86
Q

What are Scale Sets?

A

Scale sets are sets of identical VMs.

Scale sets automatically create and delete VMs for your application providing high availability protecting against server failures.

87
Q

What are Azure Container Instances?

A

Azure Container Instances host and run your containers on Azure.

Containers have less overhead than VMs and can be deployed consistently.

88
Q

What is Windows Virtual Desktop?

A

100% virtualised Windows 10.

WVD can be accessed with any device that has a browser and an internet connection

89
Q

What is the Internet of Things (IoT) ?

A

IoT is a network of millions of connected devices that function without human intervention.

90
Q

What is IoT Hub?

A

IoT hub collates and manages data feeds as a PaaS product. It enables all connected devices to send-in their data.

91
Q

What is IoT Central?

A

IoT Central is a SaaS offering with templates and dashboards for a quick start of an IoT solution.

92
Q

What is Azure Sphere?

A

Azure Sphere is an all in one solution for IoT devices in Azure.

Only specific hardware and chipsets are supported.

93
Q

What is Data Lake Analytics?

A

Data Lake Analytics enables parallel processing to sort a large data lake.

94
Q

What is HDinsights?

A

HDinsights is similar to Data Lake analytics but it is open-source based rather than being an MS service.

It enables parallel processing of data within a large data lake.

95
Q

What are Databricks?

A

Databricks, based on Apache Spark, can run and process a dataset on multiple computers at the same time.

96
Q

What is Azure Synapse Analytics?

A

Azure Synapse Analytics is an Azure Data warehouse offering and is used for reporting and data analysis

97
Q

What are the benefits of Big Data?

A

Big Data benefits:

  • Speed, processing large amounts of data quickly to provide value.
  • Cost Reduction, saving large amounts of money on storage and processing by using a Big Data solution in the Cloud.
  • Better Decision Making, immediate data processing and analysis in-memory means you can make better decisions faster
  • New products and services, enables you to understand what the customers want and deliver them better products and services.
98
Q

What is Azure Bot Service?

A

Azure Bot Service lets you build bots for Q&A services and virtual assistants.

99
Q

What is the Machine Learning Service?

A

The Machine Learning Service is a collection of tools to help you build AI applications.

100
Q

What does Azure DevOps consist of?

A
  • Azure boards
  • Azure pipelines
  • Azure repos
  • Azure Test Plans
  • Azure artifacts
101
Q

What is Azure DevTest Labs?

A

Azure DevTest Labs enables Environment Management without the incurring of costs.

102
Q

What is Azure Defence in Depth?

A

Defence in Depth describes the need for multiple layers of defence.

103
Q

What controls the data coming in and out of a network based on rules?

A

A firewall controls the data coming in and out of a network based on rules.

104
Q

What is used to protect a subnet or VM?

A

Network Security Groups are used to protect subnets and VMs.

105
Q

What is Azure Security Center?

A

Azure Security Center monitors security for your VMs. You can define policies to protect your resources and respond to incidents.

106
Q

What is Azure Key Vault used for?

A

Azure Key Vault is a secure way to share access to applications and resources with others without revealing the credentials.

107
Q

What is Azure Information Protection used for?

A

Azure Information Protection is used to share files and data securely inside and outside of Azure whilst still maintaining control.

It allows you to control who views, edits and prints the information.

108
Q

What is Azure Sentinel used for?

A

Azure Sentinel allows you to collect, aggregate, analyse and present security issues automatically for you to take action.

109
Q

What are Azure Dedicated Hosts?

A

Azure Dedicated Hosts are user owned hardware.

It gives a further level of control without losing Cloud benefits like scaling, scale sets, fault isolation and availability zones.

110
Q

What is Advanced Threat Protection?

A

Advanced Threat Protection allows you to secure and manage users of your organisation and monitor their behaviour.

It allows you to create a baseline and then report on any deviations from it.

111
Q

What is Azure Monitor used for?

A

Azure Monitor is used to collect telemetry data from resources which can then be analysed. This enables performance maximisation, availability and the identification of issues.

112
Q

What is Azure Advisor?

A

Azure Advisor gives recommendations based on your resource usage in order to save money, increase resiliency, security and performance.

113
Q

What is Azure Policy?

A

Azure Policy evaluates resources in Azure by comparing the properties of those resources to business rules

114
Q

What is Azure Blueprints?

A

Azure Blueprints enables cloud architects and central information technology groups to define a repeatable set of Azure resources that implements and adheres to an organization’s standards, patterns, and requirements.

115
Q

What is Azure Service Health used for?

A

Azure Service Health is used to notify about any planned and unplanned incidents on the Azure platform.

116
Q

What is Trust Center used for?

A

Trust Center is used as a repository to find audit reports and certificates awarded to Azure.

117
Q

What is Knowledge Center?

A

Knowledge Center is a collection of the most commonly asked questions.

118
Q

What are the Azure Support Plans?

A

The Support Plan tiers are:

  • Basic
  • Developer
  • Standard
  • Professional Direct
  • Premier
119
Q

How can you get free support from Azure?

A

You can get free Azure support by using the Azure documentation, Azure forums and social media accounts.

120
Q

What is a VPN Gateway?

A

A VPN gateway is a specific type of virtual network gateway that is used to send encrypted traffic between an Azure virtual network and an on-premises location over the public Internet.

121
Q

To limit spending on Azure, what is a recommended best practice?

A

Azure spending limits are the recommended way to manage the total spend on your Azure subscription.

When your usage results in charges that exhaust your spending limit, the services that you deployed are disabled for the rest of that billing period.

122
Q

Which factors have an influence on the cost of using products and services on Azure?

A

The factors that influence price of a service on Azure are resource size, resource location and the amount of bandwidth being used. How much you use a resource or the age of it do not influence the price.

123
Q

Which Azure calculator would you use to figure out monthly costs for Azure services?

A

The Pricing Calculator for Azure is a comprehensive tool that you can use to estimate any combination of services on Azure.

124
Q

What is the Total Cost of Ownership Calculator used for?

A

The Total Cost of Ownership Calculator can indicate the savings achieved by moving your on-premises services to Azure.

125
Q

Which features are in Azure Cost Management?

A
  • Visualize current costs for your Azure account.

- Visualize future costs for your Azure account.

126
Q

What are types of locks in Azure?

A
  • Read-only.

- Delete

127
Q

Which services can feed data into Azure Monitor?

A

Azure Monitor can accept data from almost any service, in order to monitor their operation and health.

You get a single dashboard to view all of the current metrics, or you can delve into the archived data through the interactive query language.

128
Q

What is a security policy in Security Center?

A

A security policy defines the desired configuration of your workloads and helps ensure you’re complying with the security requirements of your company or regulators.

129
Q

What are the Microsoft services that can tell you more about trust in the Azure platform?

A

You can use the Trust Center to find documentation of all the various compliance standards Azure is adhering to.

You can use the Service Trust Portal to read the audit reports for any part of Microsoft’s products, including Azure.

130
Q

What is the service for managing privacy on Azure called?

A

Privacy is a core component of each and every Azure service, so there isn’t a single service. All products are built with privacy as a first class citizen.

131
Q

What is the purpose of “models” in Machine Learning and Artificial Intelligence?

A

A model is the way that you define what you want your machine learning implementation to learn.

You give it a model, which is a set of rules, and the application then starts playing this model over and over again with the data you have provided. Over time, usually very fast, the model will find patterns in the data that follow the rules you have provided

132
Q

What are some of the likely outcomes from using Azure Data Lake Analytics to analyse Big Data?

A

Analysing Big Data can often lead to more precise decision-making for a business, a cost reduction on the storage of the data using a service like Azure Data Lake, and better products that take customer feedback and behaviour into account.

133
Q

When would you use Azure Logic Apps to solve a problem?

A

There are a lot of ways to schedule, automate, and orchestrate tasks and processes using Logic Apps.

Logic Apps connect systems both inside and outside of the Azure platform, integrating not only apps, but also data flows, services, and entire systems.

134
Q

What is a recommended use case for Azure SQL?

A

Using Azure Database Migration Service, you can migrate directly from Microsoft SQL Server to Azure SQL.

It is recommended by Azure to move your on-premises SQL Server instances to Azure SQL to improve efficiency and lower costs. It is not recommended to just migrate everything, as that is a case-by-case basis. Cosmos DB data is unlikely to match directly to Azure SQL.

135
Q

What are the advantages of using a database for storing data?

A

They offer the ability to sort and index data.

It is a very powerful way of getting the data out in exactly the format you want.

136
Q

What can you store in a blob container inside Azure Storage?

A

Any kind of binary file, such as videos, images, documents and applications. Blob containers on Azure act similar to directories in a file system. They can contain an unlimited number of blobs.

137
Q

Which types of blobs are supported by Azure storage?

A

Append blobs are used for operations where you are appending new data to existing content, rather than replacing it. Picture this like a log that you’re constantly adding to.

Page blobs are used for random read/write operations. Picture this like the computing-equivalent of having a scrap piece of paper, or ‘page’ on your desk to scribble notes on that you only need for temporary periods of time.

Block blobs are used for handling large amounts of data very effectively.

138
Q

What is a suitable use case for the Azure Files storage service?

A

Azure Files can be used to completely replace or supplement traditional on-premises file servers or NAS devices.

139
Q

What type of storage is archive storage?

A

Archive storage is a very cheap version of blob storage meant to store data that is very infrequently used, such as system backups.

140
Q

What is the primary use for disk storage?

A

Disk storage is a full Virtual hard disk that you can access. It is ideal as the disk for a Virtual machine. In fact, when you create a Virtual machine, disk storage is created too.

141
Q

What is an address space on a Virtual Network?

A

An address space is a range of IP addresses that can be assigned to resources attached to the Virtual Network.

142
Q

What are the three kinds of App Service?

A

Web Apps for Containers makes it simple to deploy web applications based in containers.

Web Apps allow you to easily deploy web-based applications with a number of languages.

API Apps are specifically used for building apps that will host API’s (Application Programming Interfaces) used by other applications.

143
Q

When can you delete a resource group from Azure?

A

At any time, as long as your resources or resource group are not locked by a related service.

144
Q

Select all the true statements per Microsoft’s definitions of cloud types.

A

In Private Clouds, your cloud infrastructure is physically isolated from other organizations.

Private Clouds can be hosted at your datacenter or hosted by a third-party service. Private Clouds offer advantages of flexibility, control, and scalability. In a Private Cloud, infrastructure and services exist on hardware and software dedicated to your organization.

A hybrid cloud combines a public cloud (such as Azure) with on-premises infrastructure (private cloud).

145
Q

Which cloud ability does elasticity describe?

A

The ability to quickly expand or decrease computer processing, memory and storage resources.

146
Q

What is consumption-based pricing on Azure?

A

Consumption-based pricing is when you are charged for only what you use (Pay-As-You-Go rate).

147
Q

How does scalability on Azure work?

A

In Microsoft’s definition, scalability is the ability of a system to handle increased load. Services covered by Azure Autoscale can match demand to the needed workload.

148
Q

What does fault tolerance describe for cloud computing?

A

Fault tolerance means that a failure can occur on Azure services and applications, but it will not affect its availability.

149
Q

What are the two types of scaling on Azure?

A

Scaling up/down, and scaling out.

150
Q

What is high availability in cloud computing?

A

If one resource on Azure dies unexpectedly, another resource will almost instantly take over the workload.

151
Q

Why would you use the Azure Cloud Shell?

A

Cloud Shell enables access to a browser-based command-line experience built with Azure management tasks in mind.

152
Q

What are some of the key advantages of using ARM templates for creating cloud infrastructure?

A
  • Idempotency.
  • Declarative.
  • Source Control.
153
Q

What are the service plan response times (sev c-a)?

A
  • 8
  • 8,4,1
  • 4,2,1
  • 4,2,1
154
Q

You have been asked to migrate a Windows-based legacy on-premise application to Azure with the minimal effort possible, which compute service should you choose?

A

The simplest migration approach would be to use Azure Migrate and target Virtual Machines - virtual machines have the closest similarity to the on-premises platform where the application resides.

155
Q

Which Azure DevOps tool would you use to share applications and code libraries?

A

Azure Artifacts is a service in Azure DevOps, which can host code libraries and applications for you to share internally or externally.

156
Q

What is Azure Boards?

A

Azure Boards is for project managers.

157
Q

What is Azure Repos?

A

Azure Repos holds your source code.

158
Q

You want to protect your Azure services from attacks that send large amounts of usually allowed traffic from the outside world and that might overwhelm your services. Which is the best way you can do this?

A

Azure DDoS Protection protects against denial of service attacks, which involve large amounts of data directed at your service so is the perfect service to protect our services. DDoS

159
Q

What is a policy in Azure?

A

A policy is a set of rules to ensure resources are compliant.

160
Q

What is the Azure Policy service?

A

Azure Policy is the service that ensures your resources are compliant to the policies.

161
Q

What is a security principal?

A

A security principal is an object representing an entity such as a user or group, which can access the resource.

162
Q

To what can a lock be assigned?

A

A lock can be assigned to a subscription, a resource group, or a resource.

163
Q

What are Azure Blueprints?

A

Azure Blueprints are templates for creating new Azure resources with adherence to rules and regulations built-in.

164
Q

What is the Cloud Adoption Framework?

A

The Cloud Adoption Framework is a collection of documents and guidance that walks you through setting up your Cloud infrastructure.

165
Q

What does Azure Monitor help you to achieve?

A
  • the maximising of performance
  • the maximising of availability
  • the identification of issues
166
Q

What is Azure Compliance Manager used for?

A

Compliance Manager gives recommendations about the compliance of your resources.

167
Q

What is Azure Information Protection used for?

A

Azure Information Protection is used to label, classify and protect data based on sensitivity

168
Q

You are looking to build and host your website on Azure without needing to manage the underlying infrastructure. Which type of Cloud service should you choose?

A

Platform as a service (PaaS) is a complete development and deployment environment in the cloud, with resources that enable you to deliver everything from simple cloud-based apps to sophisticated, cloud-enabled enterprise applications, all without you having to manage any of the underlying infrastructure or services.

169
Q

What Azure service is an on-demand analytics job service that simplifies big data?

A

Azure Data Lake Analytics is an on-demand analytics job service that simplifies big data.

170
Q

Which of the following tools can be used to manage Azure resources on a Google Chromebook?

A

Azure portal is a web application that is accessible on all modern desktop, tablet devices, and browsers.

Azure Cloud Shell is an interactive, browser-accessible shell for managing Azure resources.

171
Q

You want to get started in Artificial Intelligence on Azure using a visual workspace. Which service should you use?

A

Azure Machine Learning Studio provides a drag and drop visual interface for machine learning using pre-configured algorithms.

172
Q

You are deploying a pair of Azure virtual machines. You want to ensure that the application will remain available in the event of a complete data center failure. What Azure concept will help most in this task?

A

(Availability Zone) - Each Availability Zone is made up of one or more datacenters equipped with independent power, cooling, and networking within an Azure region. Configuring your Virtual Machines in distinct Availability Zones ensures that only a subset of the virtual machines in an availability zone will be affected in the event of hardware failure, OS update, or a complete data center outage.

173
Q

You attempt to create several managed disks in your Azure environment. In the Portal, you receive a message that you must increase your Azure subscription limits. What should you do to increase the limits?

A

( Create a new support request ) - If you want to raise the limit or quota above the default limit, open an online customer support request at no charge. Azure resource limits are bound to any tool set being used to create them. Limits for Portal-created resources apply to those created with PowerShell and Azure CLI.

174
Q

What ‘as-a-service’ is AAD?

A

Azure Active Directory is considered as SaaS due to the level of provider responsibility

175
Q

Which Azure tool allows you to view which user turned off a specific virtual machine during the last 14 days?

A

Azure Activity Log - it is a logging service that provides insight into subscription-level events that have occurred in Azure. This includes a range of data, from Azure Resource Manager operational data to updates on Service Health events. Events such as starting and stopping of virtual machines can be found here.

176
Q

What tool provides cost information and would help to identify underutilized and idle Azure resources in order to help reduce overall spending?

A

Azure Advisor helps you optimize and reduce your overall Azure spending by identifying idle and underutilized resources.

177
Q

Which of the following Azure storage types is most suitable for sharing files using the Server Message Block (SMB) protocol?

A

Azure Files provides highly available network file shares using the SMB protocol. This allows multiple VMs to read and write the files, and files may be accessed remotely using a URL.

178
Q

Can Azure virtual machines can be moved between availability zones and availability sets?

A

Moving Azure VMs to other Availability Sets is not supported. The virtual machine must be removed and recreated in a new or existing Availability Set.

179
Q

You are in the early stages of building your AI World Domination application. Which is the best Azure tool for managing your models, projects, data sets and more for the application?

A

Azure Machine Learning is a separate and modernized service that delivers a complete data science platform. It supports both code-first and low-code experiences. Microsoft recommends that new users choose Azure Machine Learning, instead of ML Studio (classic), for the latest range of data science tools.

180
Q

A Service Level Agreement (SLA) is?

A

The Service Agreement by Microsoft describes the commitment to the customer on uptime and connectivity availability for Azure services. Most but not all Azure services have a financially backed guarantee.

181
Q

What is the main benefit of file storage?

A

You can share access to the file storage across your machines and provide access to your on premise infrastructure

182
Q

What is Azure Cognitive services?

A

A collection of tools to bring AI / Machine Learning to your services.

183
Q

What is Azure Machine Learning Studio?

A

The main tool to allow you manage all the machine learning tools.

184
Q

What is Azure Machine Learning Service?

A

A collection of tools to help you build AI / Machine Learning Applications

Azure Foundation Exam (2 decks)

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