Core Architectural components of Azure Flashcards
What is the physical infrastructure?
data centers around the world - yet not directly accessible.
resources arranged in racks with dedicated power, cooling, and networking infrastructure.
What are data centers grouped into?
Azure regions or Azure availability zones
- to help achieve resiliency and reliability
How many resource groups can a resource be in at the same time?
One
- a resource can only be in one group at a time
What happens to the resources within a resource group when an action or setting at the Resource Group level is applied?
The setting is applied to current and future resources.
What Azure feature replicated resources across regions that are at least 300 miles away from each other?
Region Pairs
What is a Region?
Geographical area on the planet that contains at least one data center.
Intelligently assigns and controls resources within each region to ensure workloads are appropriately balanced
What are availability zones?
Physically separate data centers within an Azure Region
If one Availability Zone goes down will others continue to work?
Yes. An AZ is set up to be an isolation boundary therefore they do not affect each other
How are Availability zones connected?
Through high speed private fiber optic networks
What are Availability zones made up of?
one or more data centers equipped with independent power, cooling, and networking
Important regarding AZ?
to ensure resiliency, a minimum of 3 separate availability zones are present in all availability zone- enabled regions.
However, not all Azure Regions currently support availability zones.
True or False
There is no extra cost to duplicating your services and transferring data between availability zones?
False. There can be added cost in order to do this
True or False
Availability Zones are primarily for VMs, managed disks, load balances, and SQL databases
True
Azure services that support availability zones are what 3 categories?
Zonal Services - pin the resource to a specific zone (ex. VMs, managed disks, IP addresses)
Zone-redundant Services (ex. zone redundant storage, SQL database)
Non-regional services - services are always available from AZURE geographies are are resident to zone wide outages as well as region wide outages
Can outages still happen even with additional resiliency from availability zones?
Yes
Region Pairs
most Azure regions are paired with another region within the same geogpraphy at least 300 miles away — making them region pairs
What happens if one region in a pair is affected by a natural disaster?
Services would automatically go to the other region in the pair.
Important about region pairs
not all Azure services automatically replicate data or automatically fall back from a failed region to cross replicate to another enabled region.
in these scenarios, recovery and replication must be configured by the customer
Advantages of region pairs
one region out of every pair is prioritized to make sure at least one is restored as quickly as possible.
planned updates are rolled out to paired regions one region at a time to minimize downtime and risk of application outage
data continues to reside within the same geography as its pair (except for Brazil)
True or False
most regions are paired in two directions
True
True or False
In a one way pairing direction the primary region does not provide backup for its secondary region
true
Sovereign Regions
instances of Azure that are isolated from the main instance of Azure.
this may be needed for compliance or legal purposes.
Soveregion Regions include :
US DOD Central
US Gov Virgina
US Gov Iowa and more
- government agencies and partners
True or False
Soveregion regions are operated by screened U.S. personnel and include additional compliance certifications
True
Management infrastructure includes:
Azure resources and resource groups
Subscriptions
Accounts
True or False
A resource is the basic building block of Azure
True
True or False
Anything you create, provision, deploy, etc is a resource
True
True or False
VMs, virtual networks, databases, cognitive services, etc are all considered resources
True
What is a resource group
Grouping resources together
T or F
When creating a resource you are required to place it into a resource group
True
T or F
Resource groups can be nested
False. You cannot put a resource group into another resource group
T or F
if an action is applied to a resource group then it will be applied to all resources within the group
True
T or F
If a resource group is deleted it does not delete all the resources that were in the group
False
if a resource group is deleted, all resources within the group are deleted
T or F
if access is granted or denied to a resource group, it applies to all resources?
True
Azure Subscriptions
subscriptions are a unit of management, billing, and scale.
T or F
Using Azure requires a subscription
True
T or F
An account can have multiple subscriptions but is only required to have one
True
What are the two types of Azure subscription boundaries?
Billing boundary - determines how an Azure account is billed for using Azure
Access control boundary - Azure applies access-management policies at the subscription level
What are a few reasons for adding additional subscriptions?
Enviornments
Organizational structures
Billing
T or F
Resource groups are gathered into subscriptions
True
How can you manage a lot of subscriptions?
By organizing subscriptions into containers called management groups and apply governance conditions to the management groups
T or F
All subscriptions in a management group automatically inherit the conditions applied to the management group
True
How many management groups can be supported in a single directory?
10,000 management groups
How many levels of depth can a management group tree support?
6 levels. This does not include the root level or subscription level
T or F
Each management group and subscription can only support one parent
True
