"Azure Files enables you to set up highly available network file shares that can be accessed by using the standard Server Message Block (SMB) protocol."

https://docs.microsoft.com/en-us/azure/storage/common/storage-introduction#azure-files

Yes, Cosmos DB.

https://docs.microsoft.com/en-us/azure/cosmos-db/introduction#key-benefits

Multi-region writes and data distribution to any Azure region with the click of a button.

The first thing you create in Azure is a subscription. You can think of an Azure subscription as an "Azure account". You get billed per subscription.

A subscription is an agreement with Microsoft to use one or more Microsoft cloud platforms or services, for which charges accrue based on either a per-user license fee or on cloud-based resource consumption.

Box 1: No -

Azure resources deployed to a single resource group can be located in different regions. The resource group only contains metadata about the resources it contains.

When creating a resource group, you need to provide a location for that resource group. You may be wondering, "Why does a resource group need a location?

And, if the resources can have different locations than the resource group, why does the resource group location matter at all?" The resource group stores metadata about the resources. When you specify a location for the resource group, you're specifying where that metadata is stored. For compliance reasons, you may need to ensure that your data is stored in a particular region.

Box 2: No -

Tags for Resources are not inherited by default from their Resource Group

Box 3: Yes -

A resource group can be used to scope access control for administrative actions. By default, permissions set at the resource level are inherited by the resources in the resource group.

Reference:

https://docs.microsoft.com/en-us/azure/azure-resource-manager/resource-group-overview

Azure storage offers different access tiers: hot, cool and archive.

The archive access tier has the lowest storage cost. But it has higher data retrieval costs compared to the hot and cool tiers. Data in the archive tier can take several hours to retrieve.

While a blob is in archive storage, the blob data is offline and can't be read, overwritten, or modified. To read or download a blob in archive, you must first rehydrate it to an online tier.

Example usage scenarios for the archive access tier include:

- Long-term backup, secondary backup, and archival datasets

- Original (raw) data that must be preserved, even after it has been processed into final usable form.

- Compliance and archival data that needs to be stored for a long time and is hardly ever accessed.

Reference:

https://docs.microsoft.com/en-us/azure/storage/blobs/storage-blob-storage-tiers?tabs=azure-portal#archive-access-tier

Keywords = minimum number

"For all Virtual Machines that have two or more instances deployed across two or more Availability Zones in the same Azure region, we guarantee you will have Virtual Machine Connectivity to at least one instance at least 99.99% of the time."

https://azure.microsoft.com/en-us/support/legal/sla/virtual-machines/v1_8/

The question here is which is the Azure service that collects events from all azure resources and puts into a centralized repo.

AZURE MONITOR is the one which collects logs and events from all resources and puts the logs into Azure log analytics and events into Azure event hub. So the centralized units will be these but the service that allows us to do it is Azure monitor anyway so answer would be Azure Monitor.

An Azure availability zone is located in more than one point in a single region.

Box 1: Yes -

There are different replication options available with a storage account. The "minimum" replication option is Locally Redundant Storage (LRS). With LRS, data is replicated synchronously three times within the primary region.

Box 2: No -

Data is not backed up automatically to another Azure Data Center although it can be depending on the replication option configured for the account. Locally

Redundant Storage (LRS) is the default which maintains three copies of the data in the data center.

Geo-redundant storage (GRS) has cross-regional replication to protect against regional outages. Data is replicated synchronously three times in the primary region, then replicated asynchronously to the secondary region.

Box 3: No -

The limits are much higher than that. The current storage limit is 2 PB for US and Europe, and 500 TB for all other regions (including the UK) with no limit on the number of files.

Reference:

https://docs.microsoft.com/en-us/azure/storage/common/storage-account-overview

NO-NO-NO

1-Not every region has multiple Availability Zone. Some regions may have only one Availability Zone.

2-One can run both Linux and Windows virtual machines created in the availability zone.

3-Availability zones are used to replicate data and applications in the same region.