AZ900 Part 2

A storage account provides a unique namespace for your Azure Storage data that's accessible from anywhere in the world over HTTP or HTTPS (LRS)

Locally redundant storage

Azure Files:

Managed file shares for cloud or on-premises deployments.

Azure DNS also supports alias record sets. You can use an alias record set to refer to an Azure resource, such as

an Azure public IP address, an Azure Traffic Manager profile, or an Azure Content Delivery Network (CDN) endpoint.

Azure DNS uses _________________ , so each DNS query is answered by the closest available DNS server to provide fast performance and high availability for your domain.

anycast networking

The ________ access tier isn't available at the account level.

archive

Archive access tier:

Appropriate for data that is rarely accessed and stored for at least 180 days, with flexible latency requirements (for example, long-term backups).

________ storage stores data offline and offers the lowest storage costs, but also the highest costs to rehydrate and access data.

Archive

_______ is the lowest-cost redundancy option and offers the least durability compared to other options.

LRS

To mitigate the risk of loss of storage from disasters such as fires or flooding within a data center, Microsoft recommends using _______, _________, or _________ .

(ZRS), (GRS), or (GZRS) zone-redundant storage, geo-redundant storage, or geo-zone-redundant storage

(Blob) The storage client libraries are available for multiple languages, including

.NET, Java, Node.js, Python, PHP, and Ruby.

(LRS) replicates your data three times within a single data center in the primary region. LRS provides at least ____ nines of durability ____________ of objects over a given year.

11; (99.999999999%)

ZRS offers durability for Azure Storage data objects of at least _______ nines ____________ over a given year.

12; (99.9999999999%)

Azure Storage typically has an RPO of less than _____________ , although there's currently no SLA on how long it takes to replicate data to the secondary region.

15 minutes

GRS offers durability for Azure Storage data objects of at least ____ nines __________ over a given year.

16; (99.99999999999999%)

GZRS is designed to provide at least ____ nines ___________ of durability of objects over a given year.

16; (99.99999999999999%)

Each individual message in a queue can be up to _______ in size.

64 KB

REST API

A REST API (also known as RESTful API) is an application programming interface (API or web API) that conforms to the constraints of REST architectural style and allows for interaction with RESTful web services. REST stands for representational state transfer and was created by computer scientist Roy Fielding.

________ could contain gigabytes of binary data streamed from a scientific instrument, an encrypted message for another application, or data in a custom format for an app you're developing.

A blob

Azure Blobs:

A massively scalable object store for text and binary data. Also includes support for big data analytics through Data Lake Storage Gen2.

Azure Queues:

A messaging store for reliable messaging between application components.

What is anycast?

Anycast is a network addressing and routing method in which incoming requests can be routed to a variety of different locations or "nodes." In the context of a CDN, Anycast typically routes incoming traffic to the nearest data center with the capacity to process the request efficiently. Selective routing allows an Anycast network to be resilient in the face of high traffic volume, network congestion, and DDoS attacks.

Which Azure Virtual Machine feature staggers updates across VMs based on their update domain and fault domain?

Availability sets

___________ file shares can be mounted concurrently by cloud or on-premises deployments.

Azure Files

When you create a storage account, you select the primary region for the account. The paired secondary region is based on_______________________ , and can't be changed.

Azure Region Pairs

Azure DNS is based on _____________ , which provides features such as: • Azure role-based access control (Azure RBAC) to control who has access to specific actions for your organization. • Activity logs to monitor how a user in your organization modified a resource or to find an error when troubleshooting. • Resource locking to lock a subscription, resource group, or resource. Locking prevents other users in your organization from accidentally deleting or modifying critical resources.

Azure Resource Manager

Which Azure service allows users to use a cloud hosted version of Windows from any location and connect from most modern browsers?

Azure Virtual Desktop

Azure DNS is integrated in the _________ and uses the same credentials, support contract, and billing as your other Azure services.

Azure portal

Azure ___________ is an object storage solution for the cloud.

Blob Storage

_____________ can store massive amounts of data, such as text or binary data. Azure _______________ is unstructured, meaning that there are no restrictions on the kinds of data it can hold. ____________ can manage thousands of simultaneous uploads, massive amounts of video data, constantly growing log files, and can be reached from anywhere with an internet connection.

Blob Storage

¬¬______ aren't limited to common file formats.

Blobs

Azure Disks:

Block-level storage volumes for Azure VMs.

.NET is also referred to as a

Common Language Runtime (CLR). This is because in addition to the C# language, the .NET runtime can also execute compiled code written in F# and VisualBasic.

________ protects your data against server rack and drive failures. However, if a disaster such as fire or flooding occurs within the data center, all replicas of a storage account using _________ may be lost or unrecoverable.

LRS

CDN

Content Delivery Network

_____ copies your data synchronously three times within a single physical location in the primary region using LRS. It then copies your data asynchronously to a single physical location in the secondary region (the region pair) using LRS.

GRS

_____ is similar to running LRS in two regions, and ______ is similar to running ZRS in the primary region and LRS in the secondary region.

GRS; GZRS

Data in a _______ storage account is copied across three Azure availability zones in the primary region (similar to ZRS) and is also replicated to a secondary geographic region, using LRS, for protection from regional disasters.

GZRS

Microsoft recommends using ______ for applications requiring maximum consistency, durability, and availability, excellent performance, and resilience for disaster recovery.

GZRS

_______ combines the high availability provided by redundancy across availability zones with protection from regional outages provided by geo-replication.

GZRS

(GRS)

Geo-redundant storage

(GZRS)

Geo-zone-redundant storage

Objects in Blob storage can be accessed from anywhere in the world via ___________.

HTTP or HTTPS

Data in Azure Storage is accessible from anywhere in the world over

HTTP or HTTPS.

The available blob storage access tiers include:

Hot Access, Cold Access, Archive Access

_____ Azure Files shares are accessible from Linux or macOS clients.

NFS

NFS

Network File System

Cool access tier:

Optimized for data that is infrequently accessed and stored for at least 30 days (for example, invoices for your customers).

Hot access tier:

Optimized for storing data that is accessed frequently (for example, images for your website).

(storage account type) Premium block blobs

Premium storage account type for block blobs and append blobs. Recommended for scenarios with high transaction rates or that use smaller objects or require consistently low storage latency.

(Storage account type) Premium file shares

Premium storage account type for file shares only. Recommended for enterprise or high-performance scale applications. Use this account type if you want a storage account that supports both Server Message Block (SMB) and NFS file shares.

(Storage account type) Premium page blobs

Premium storage account type for page blobs only.

Azure _______________ is a service for storing large numbers of messages.

Queue Storage

With Azure _________________ you can access the messages from anywhere in the world via authenticated calls using HTTP or HTTPS.

Queue Storage

For read access to the secondary region, enable _____________ or _____________ .

RA-GRS; RA-GZRS RA stands for Read Access

Because Azure DNS is running on Azure, it means you can manage your domains and records with the Azure portal, Azure PowerShell cmdlets, and the cross-platform Azure CLI. Applications that require automated DNS management can integrate with the service by using the ____________________ .

REST API and SDKs

Remember, the data in your secondary region may not be up-to-date due to____.

RPO

The _____ indicates the point in time to which data can be recovered.

RPO

RA

Read Access

RA-GRS

Read-access geo-redundant storage

(RA-GZRS)

Read-access geo-zone-redundant storage

RPO

Recovery Point Objective

Azure Storage always stores multiple copies of your data so that it's protected from planned and unplanned events such as transient hardware failures, network or power outages, and natural disasters. ____________ ensures that your storage account meets its availability and durability targets even in the face of failures.

Redundancy

_____ Azure file shares are accessible from Windows, Linux, and macOS clients.

SMB; Additionally, SMB Azure file shares can be cached on Windows Servers with Azure File Sync for fast access near where the data is being used.

SMB

Server Message Block

Azure Files offers fully managed file shares in the cloud that are accessible via the industry standard ______________ or ______________ protocols.

Server Message Block (SMB) or Network File System (NFS)

(storage account type) Standard general-purpose v2

Standard storage account type for blobs, file shares, queues, and tables. Recommended for most scenarios using Azure Storage. If you want support for network file system (NFS) in Azure Files, use the premium file shares account type. Supported services: Blob Storage (including Data Lake Storage), Queue Storage, Table Storage, and Azure Files Redundancy Options: LRS, GRS, RA-GRS, ZRS, GZRS, RA-GZRS

Users or client applications can access blobs via. . .

URLs, the Azure Storage REST API, Azure PowerShell, Azure CLI, or an Azure Storage client library.

With ______ , your data is still accessible for both read and write operations even if a zone becomes unavailable. No remounting of Azure file shares from the connected clients is required.

ZRS

________ offers durability for Azure Storage data objects of at least 12 nines (99.9999999999%) over a given year.

ZRS

(ZRS)

Zone-redundant storage

Queues are commonly used to create. . .

a backlog of work to process asynchronously.

Data lake

a centralized repository designed to store, process, and secure large amounts of structured, semistructured, and unstructured data. It can store data in its native format and process any variety of it, ignoring size limits.

Hot, cool, and archive tiers can be set at the ______ level, during or after upload.

blob

One advantage of ______ storage over disk storage is that it doesn't require developers to think about or manage disks. Data is uploaded as ______ , and Azure takes care of the physical storage needs.

blob; blobs

You can't use Azure DNS to

buy a domain name. For an annual fee, you can buy a domain name by using App Service domains or a third-party domain name registrar. Once purchased, your domains can be hosted in Azure DNS for record management.

Data in the _______ access tier can tolerate slightly lower availability, but still requires high durability, retrieval latency, and throughput characteristics similar to hot data.

cool

For ______ data, a slightly lower availability service-level agreement (SLA) and higher access costs compared to hot data are acceptable trade-offs for lower storage costs.

cool

If your storage account is copied to a secondary region, then your data is ________ even if complete regional outage or a disaster in which the primary region isn't recoverable.

durable

Azure Storage offers two options for copying your data to a secondary region:

geo-redundant storage (GRS) and geo-zone-redundant storage (GZRS).

Microsoft recommends using ZRS in the primary region for scenarios that require _____________ .

high availability

For applications requiring ______________- , you can choose to additionally copy the data in your storage account to a secondary region that is hundreds of miles away from the primary region.

high durability

Only the ______ and ______ access tiers can be set at the account level.

hot and cool

A _________ can contain as many messages as your storage account has room for (potentially millions).

queue

Azure Storage offers two options for how your data is replicated in the primary region

locally redundant storage (LRS) and zone-redundant storage (ZRS).

One of the benefits of using an Azure Storage Account is having a unique ____________ in Azure for your data. In order to do this, every storage account in Azure must have a unique-in-Azure account name. The combination of the account name and the Azure Storage service endpoint forms the endpoints for your storage account.

namespace

With ZRS, if a zone becomes unavailable, Azure undertakes _______________ , such as DNS repointing. These updates may affect your application if you access data before the updates have completed.

networking updates

By default, data in the secondary region isn't available for read or write access unless there's a failover to the secondary region. If the primary region becomes unavailable, you can choose to fail over to the secondary region. After the failover has completed, the secondary region becomes the ________________ , and you can again read and write data.

primary region

Geo-redundant storage (with GRS or GZRS) replicates your data to another physical location in the secondary region to protect against regional outages. However, that data is available to be read only if the customer or Microsoft initiates a failover from the primary to secondary region. However, if you enable _____________ to the secondary region, your data is always available, even when the primary region is running optimally.

read access

The interval between the most recent writes to the primary region and the last write to the secondary region is known as the _____________ .

recovery point objective (RPO)

REST stands for ...

representational state transfer and was created by computer scientist Roy Fielding.

ZRS is also recommended for _________ _________ of data within a country or region to meet data governance requirements.

restricting replication

If the IP address of the underlying resource changes, the alias record set ...

seamlessly updates itself during DNS resolution.

The alias record set points to the ______________ , and the ________________ is associated with an IP address.

service instance

When you create your storage account, you'll start by picking the

storage account type.

Data in an Azure Storage account is always replicated ______ times in the primary region.

three

Azure DNS also supports private DNS domains. This feature allows you to

use your own custom domain names in your private virtual networks, rather than being stuck with the Azure-provided names.

The .NET runtime is

what actually knows how to execute our compiled code.

For Availability Zone-enabled Regions, _______________ replicates your Azure Storage data synchronously across three Azure availability zones in the primary region.

zone-redundant storage (ZRS)

Blob storage is ideal for:

• Serving images or documents directly to a browser. • Storing files for distributed access. • Streaming video and audio. • Storing data for backup and restore, disaster recovery, and archiving. • Storing data for analysis by an on-premises or Azure-hosted service.

When naming your storage account, keep these rules in mind:

• Storage account names must be between 3 and 24 characters in length and may contain numbers and lowercase letters only. • Your storage account name must be unique within Azure. No two storage accounts can have the same name. This supports the ability to have a unique, accessible namespace in Azure.