AWS Global Infrastructure Flashcards

1
Q

What is a region?

A

A grouping of independently separated data centres in a specific geographic location known as “Availability Zones”

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2
Q

When in the console, can you see all resources at once, across multiple regions?

A

No, you can only view the resources in one region at a time but they will be across all availability zones in that region.

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3
Q

Are all AWS services region specific?

A

No, some services will work globally ie. across all regions. Eg. users created in IAM.

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4
Q

How do you switch between regions?

A

By selecting the region from the dropdown menu on the top right of the console.

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5
Q

Some AWS services have Global in the region drop down. What does this signify?

A

Some services are not region specific and work globally eg. IAM. The concept of regions therefore does not apply and you cannot select individual regions.

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6
Q

How is fault tolerance assured across Availability Zones?

A

Data centres within an AZ, have direct, low latency connections to each other but are although geographically close, are isolated from each other.

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7
Q

What comprises an Availability Zone (AZ)?

A

An AZ has multiple AWS Data Centres, the locations of which, are somewhat secretive for security purposes.

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8
Q

Well designed applications, utilise multiple Availability Zones in a region, why?

A

Fault tolerance and failover.

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9
Q

What is an Edge Location?

A

An AWS datacenter, which does not contain AWS Services but used to deliver content to parts of the world. Eg. CloudFront which is a CDN.

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10
Q

What are the benefits of an Edge Location?

A

Reduced space/time/latency required for requests from that part of the World.

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11
Q

What is a VPC and how does it related to AZ’s?

A

Virtual Private Cloud network. a VPC spans multiple AZ’s and Data Centers, allowing for high availability & fault tolerance.

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