Leveraging the AWS Global Infrastructure

Question 1

What - in terms of user experience - is the main benefit of global deployment?

Answer 1

You dramatically reduce latency on average

Question 2

What is the main benefit to the organisation of deploying globally in terms of availability?

Answer 2

You are protecting against disasters and attacks

Question 3

What are edge locations used for?

Answer 3

To deliver content as close as possible to users

Question 4

What are 4 routing policies in Route 53?

Answer 4

• Simple routing
• Weighted routing (distributing to different instances with assigned weights)
• Latency routing (route user to the server with the lowest latency)
• Failover routing (R53 performs a health check on the main server, if it fails, redirects traffic to the secondary failover server)

Question 5

What is a latency routing policy in R53?

Answer 5

Route the user to the server which gives them the lowest latency

Question 6

What type of record is mapping a URL to an IPv4 IP address?

Answer 6

A record

Question 7

What type of record is mapping a URL to an IPv6 address?

Answer 7

AAAA record

Question 8

What is CloudFront? What is its purpose?

Answer 8

CloudFront is a content delivery network (CDN). It is used to deliver content as close as possible to users and thus with low latency.

Question 9

How does CloudFront reduce latency when delivering content to users?

Answer 9

By cache-ing (storing temporarily) content as the edge (aka as close to users as possible) in 216 points of presence globally.

Question 10

How does S3 transfer acceleration work?

Answer 10

The files that you want to move around are uploaded to the closest edge location (faster because the edge location is closer than other trying to go to the closest AZ).
From here, the file is moved around in the internal network for which the speeds are very fast.

Question 11

What are AWS Outposts?

Answer 11

Server racks that you can install in your own on-premises server rooms that offer the same services, APIs, tools etc. to build your apps as if it was in the cloud.
HOWEVER, the selection of AWS services available is of course significantly reduced compared to actually using the cloud.

Question 12

What are some benefits of AWS Outposts?

Answer 12

• Low latency access to on-premises systems
• Data stays on-premise (with you)
• Local data processing
• Easier migration from on-premise to the cloud
• Fully managed service

Question 13

What are 3 services that work on outposts? (7 examples total)

Answer 13

• EC2
• EBS
• S3
• EKS
• Elastic Container Service
• Relational Database Service
• Elastic Map Reduce

Question 14

What are AWS Wavelength zones?

Answer 14

Infrastructure deployments within the data centres of telecommunications providers.
Brings AWS connectivity to the edge of participating providers’ networks.

Question 15

What are AWS Local Zones?

Answer 15

Another, even more granular, specification for a service are to bring specific services even closer to users.
Enable a local zone on top of a hotspot of users (e.g. SW London) to give them low latency - useful if there is a lot of users and you want to upgrade the quality of their experience

Question 16

What does it mean if you have an active-passive region deployment?

Answer 16

Just one of the regions is active in both read and write. The other has only reading enabled

Question 17

In terms of domain names, what can you do in Route53?

Answer 17

Transfer domain names from other domain registrars, or register new domain names directly with R53