Core Architectural Components of Azure Flashcards
What does the Azure Free account inlcude?
1) Free access to popular Azure products for 12 months. 2) A credit to use for the first 30 days. 3) Access to more than 25 products that are always free.
What does the Azure free student account include?
1) Free access to certain Azure services for 12 months. 2) A credit to use in the first 12 months. 3) Free access to certain software developer tools.
What are the core architectural components of Azure?
1) The physical infrastructure and 2) The management infrastructure.
What is a Region?
A region is a geographical area on the planet that contains at least one, but potentially multiple data centers that are nearby and networked together with a low-latency network.
To ensure resiliency, a minimum of three separate availability zones are present in all availability zone-enabled regions. However, not all Azure Regions currently support availability zones.
What is an Availability Zones?
They are physically separate data centers within an Azure region. And Each availability zone is made up of one or more data centers equipped with independent power, cooling, and networking. The availability zones are connected through high-speed, private fiber-optic networks.
What are Region Pairs?
Most azure regions are paired with another region within the same geography (such as US, Europe, or Asia) at least 300 miles away. This approach allows for the replication of resources across a geography that helps reduce the likelihood of interruptions because of events such as natural disasters, civil unrest, power outages, or physical network outages.
Important: 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.
What are Sovereign Regions?
They are instances of Azure that are isolated from the main instance of Azure. You may need to use a sovereign region for compliance or legal purposes.
Azure sovereign regions include:
1) US DoD Central, Us Gov Virginia, Us Gov Iowa, and more: These regions are physical and logical network-isolated instances of Azure for US govt. agencies.
2)China EAST, NORT, and more: These regions are available through a unique partnership between MS and 21Vianet, whereby MS doesn’t directly maintain the datacenters.
What is a resource?
a resource is the basic building block of Azure. Anything you create, provision, deploy, etc. is a resource. Virtual Machines (VM), virtual networks, databases, cognitive services, etc. are all considered resources within Azure.
What is a resource group?
Resource groups are simply grouping of resources. When you create a resource, you’re required to place it into a resource group.
Important: While a resource group can contain many resources, a single resource can only be in one resource group at a time.
When you apply an action to a resource group, that action will apply to all the resources within that resource group.
What is an Azure subscription?
In Azure, subscriptions are a unit of management, billing, and scale. You can have multiple subscriptions under one account. For example, you can have Account A hold Dev Sub, Test Sub, and Production Sub. These will all help with facilitating billing.
