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AWS Cloud Practitioner (Digital Cloud) > AWS Global Infrastructure > Flashcards

AWS Global Infrastructure Flashcards

1
Q

What is an AWS Region?

A

An AWS Region is a geographical area.

Each region consists of 2 or more availability zones.

Each AWS Region has multiple Availability Zones and data centers.

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2
Q

What is each Region designed to be?

A

Each Amazon Region is designed to be completely isolated from the other Amazon Regions.

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3
Q

How do you replicate data within region / between region?

A

You can replicate data within a region and between regions using private or public Internet connections.

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4
Q

What makes region easy to meet regional compliance and data residency requirements?

A

You retain complete control and ownership over the region in which your data is physically located, making it easy to meet regional compliance and data residency requirements.

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5
Q

What is an Availability Zone (AZ)?

A

AZs consist of one or more discrete data centers, each with redundant power, networking, and connectivity, housed in separate facilities.

Each Availability Zone is isolated, but the Availability Zones in a region are connected through low-latency links.

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6
Q

Is there a charge for data transfer between regions?

A

Note that there is a charge for data transfer between regions.

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7
Q

What must you do with EC2 instance and AMI in a Region?

A

When you launch an EC2 instance, you must select an AMI that’s in the same region. If the AMI is in another region, you can copy the AMI to the region you’re using.

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8
Q

What is a regional endpoint?

A

When you work with an instance using the command line interface or API actions, you must specify its regional endpoint.

To reduce data latency in your applications, most Amazon Web Services offer a regional endpoint to make your requests.

An endpoint is a URL that is the entry point for a web service.

For example, https://dynamodb.us-west-2.amazonaws.com is an entry point for the Amazon DynamoDB service.

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9
Q

What is an Availability Zone (AZ)?

A

Availability Zones are physically separate and isolated from each other.

AZs span one or more data centers and have direct, low-latency, high throughput, and redundant network connections between each other.

Each AZ is designed as an independent failure zone.

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10
Q

Can you select AZ when you launch an instance?

A

When you launch an instance, you can select an Availability Zone or let AWS choose one for you.

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11
Q

What is the benefit of having EC2 isntances across multiple AZs?

A

If you distribute your EC2 instances across multiple Availability Zones and one instance fails, you can design your application so that an instance in another Availability Zone can handle requests.

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12
Q

What can you use with Elastic IP address in AZs?

A

You can also use Elastic IP addresses to mask the failure of an instance in one Availability Zone by rapidly remapping the address to an instance in another Availability Zone.

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13
Q

How is an AZ represented?

A

An Availability Zone is represented by a region code followed by a letter identifier; for example, us-east-1a.

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14
Q

How does mapping work for AZs for each AWS account?

A

To ensure that resources are distributed across the Availability Zones for a region, AWS independently map Availability Zones to names for each AWS account.

For example, the Availability Zone us-east-1a for your AWS account might not be the same location as us-east-1a for another AWS account.

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15
Q

How do you coordinate AZ across accounts?

A

To coordinate Availability Zones across accounts, you must use the AZ ID, which is a unique and consistent identifier for an Availability Zone.

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16
Q

What are some geographical measures that AZs have?

A

AZs are physically separated within a typical metropolitan region and are in lower risk flood plains.

AZs use discrete UPS and onsite backup generation facilities and are fed via different grids from independent facilities.

AZs are all redundantly connected to multiple tier-1 transit providers.

17
Q

What is a Local Zone?

A

AWS Local Zones place compute, storage, database, and other select AWS services closer to end-users.

18
Q

What is the use of Local Zone?

A

With AWS Local Zones, you can easily run highly demanding applications that require single-digit millisecond latencies to your end-users.

19
Q

What is the difference between Local Zone and Region?

A

Each AWS Local Zone location is an extension of an AWS Region where you can run your latency sensitive applications using AWS services such as Amazon Elastic Compute Cloud, Amazon Virtual Private Cloud, Amazon Elastic Block Store, Amazon File Storage, and Amazon Elastic Load Balancing in geographic proximity to end-users.

20
Q

What kind of connection does Local Zone provide and what does that allow?

A

AWS Local Zones provide a high-bandwidth, secure connection between local workloads and those running in the AWS Region, allowing you to seamlessly connect to the full range of in-region services through the same APIs and tool sets.

21
Q

What is AWS Wavelength?

A

AWS Wavelength enables developers to build applications that deliver single-digit millisecond latencies to mobile devices and end-users.

22
Q

How does Wavelength make it easy to deploy?

A

AWS developers can deploy their applications to Wavelength Zones, AWS infrastructure deployments that embed AWS compute and storage services within the telecommunications providers’ datacenters at the edge of the 5G networks, and seamlessly access the breadth of AWS services in the region.

23
Q

What is the benefit of AWS Wavelength?

A

AWS Wavelength brings AWS services to the edge of the 5G network, minimizing the latency to connect to an application from a mobile device.

24
Q

What is AWS Outposts?

A

AWS Outposts bring native AWS services, infrastructure, and operating models to virtually any data center, co-location space, or on-premises facility.

25
Q

Are there any differences between on premise and AWS Cloud with AWS Outposts?

A

You can use the same AWS APIs, tools, and infrastructure across on-premises and the AWS cloud to deliver a truly consistent hybrid experience.

26
Q

What is AWS Outposts designed for?

A

AWS Outposts is designed for connected environments and can be used to support workloads that need to remain on-premises due to low latency or local data processing needs.

27
Q

What is an Edge Location?

A

Edge locations are Content Delivery Network (CDN) endpoints for CloudFront.

There are many more edge locations than regions.

Currently there are over 200 edge locations.

28
Q

What is a Regional Edge Cache?

A

Regional Edge Caches sit between your CloudFront Origin servers and the Edge Locations.

A Regional Edge Cache has a larger cache-width than each of the individual Edge Locations.

AWS Cloud Practitioner (Digital Cloud) (19 decks)

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