(Unit 3 of 4) Azure physical infrastructure

Question 1

Describe a REGION

Answer 1

A region is a geographical area on the planet that contains at least one, but potentially multiple datacenters that are nearby and networked together with a low-latency network.

https://learn.microsoft.com/en-us/training/wwl-azure/describe-core-architectural-components-of-azure/media/availability-zones-c22f95a3.png

Question 2

How does Azure utilise regions?

Answer 2

Azure intelligently assigns and controls the resources within each region to ensure workloads are appropriately balanced.

Question 3

Draw a diagram and describe Azure AVAILABILTY ZONES

Answer 3

1. Availability zones are physically separate datacenters within an Azure region.
2. Each availability zone is made up of one or more datacenters equipped with independent power, cooling, and networking.

https://learn.microsoft.com/en-us/training/wwl-azure/describe-core-architectural-components-of-azure/media/availability-zones-c22f95a3.png

Question 4

To ensure resiliency, a minimum of ( ) separate availability zones are present in all availability zone-enabled regions.

Answer 4

THREE

Question 5

Describe the use of A.Z

Answer 5

1. Build high-availability
2. Ensure your services and data are redundant

Question 6

What resources are A.Zs primarily for?

Answer 6

1.VMs
2. Managed disks
3. Load balancers
4. SQL databases

Question 7

Name the 3 service types that SUPPORT A.Z

Answer 7

1.Zonal services
2. Zone-redundant services
3. Non-regional services

Question 8

Describe the 1st type of service that supports A.Z (ZS)

Answer 8

You pin the resource to a specific zone (for example, VMs, managed disks, IP addresses).

Question 9

Describe the 2nd type of service that supports A.Z (ZRS)

Answer 9

The platform replicates automatically across zones (for example, zone-redundant storage, SQL Database).

Question 10

Describe the 3rd type of service that supports A.Z (NRS)

Answer 10

Services are always available from Azure geographies and are resilient to zone-wide outages as well as region-wide outages.

Question 11

Describe Azure Region pairs

Answer 11

Most Azure regions are paired with another region within the same geography.

This approach allows for the replication of resources across a geography that helps reduce the likelihood of interruptions

Question 12

Draw a diagram showing REGION PAIRS

Answer 12

https://learn.microsoft.com/en-us/training/wwl-azure/describe-core-architectural-components-of-azure/media/region-pairs-7c495a33.png

Question 13

List 2 advantages of REGION PAIRS

Answer 13

1. If an extensive Azure outage occurs, one region out of every pair is prioritized
2. Planned Azure updates are rolled out to paired regions one region at a time

Question 14

Give a brief summary of Azure SOVEREIGN REGIONS

Answer 14

Sovereign regions 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.