HOTSPOT - For each of the following statements, select Yes if the statement is true. Otherwise, select No. NOTE: Each correct selection is worth one point. Hot Area:
Suggested Answer:
Availability zones expand the level of control you have to maintain the availability of the applications and data on your VMs. Availability Zones are unique physical locations within an Azure region. Each zone is made up of one or more datacenters equipped with independent power, cooling, and networking. To ensure resiliency, there are a minimum of three separate zones in all enabled regions. The physical separation of Availability Zones within a region protects applications and data from datacenter failures. With Availability Zones, Azure offers industry best 99.99% VM uptime SLA. By architecting your solutions to use replicated VMs in zones, you can protect your applications and data from the loss of a datacenter. If one zone is compromised, then replicated apps and data are instantly available in another zone. References: https://docs.microsoft.com/en-us/azure/virtual-machines/windows/manage-availability
Availability Zone: Unique physical locations within a region. Each zone is made up of one or more datacenters equipped with independent power, cooling, and networking.
So this is why the third question is yes, because your data will likely be stored in more than one data center, so if a data center goes down, it's highly likely another data center in the zone will have a backup and will move the activity to that location. This is what they mean by "fault tolerance" as well.
Fault tolerance is protection against a system failure (e.g. faulty power strip), not a whole data center. Redundant power sources would be an example of fault tolerance.
No, some zones can have only one Datacenter so your "likelyhood" is not the reason for the 3rd answer to be YES but rather the managed disk availability options :
https://docs.microsoft.com/en-us/azure/virtual-machines/disks-redundancy
Zone-redundant storage (ZRS) synchronously replicates your Azure managed disk across three Azure availability zones in the region you select. Each availability zone is a separate physical location with independent power, cooling, and networking.
A ZRS disk lets you recover from failures in availability zones. If a zone went down, a ZRS disk can be attached to a virtual machine (VM) in a different zone
In the broadest terms you can use availability zones for disk storage but this is seperate from an availability zone in its strictess sense. It depends on how liberally you interpret the question
A. No
B. Yes
C. Yes. Azure managed disks offer two storage redundancy options, zone-redundant storage (ZRS), and locally-redundant storage. Locally-redundant storage (LRS) replicates your data three times within a single data center in the selected region. Zone-redundant storage (ZRS) synchronously replicates your Azure managed disk across three Azure availability zones in the region you select. Each availability zone is a separate physical location with independent power, cooling, and networking. So, by using ZRS (means using multiple AZs you can protect Managed Disks from data center failure).
The thing with this question is that it is NOT properly word or framed.
the question should be said in this this way ..."you can use Availabilty zone to prevent YOUR company's Azure VM from a data center failure drives home the point more readily than saying ...you can use Availability zone to prevent a VM from a data center failure.
in this second senario, it could as well means VMs in azure that aren't mine or related to my company
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