George has launched three EC2 instances inside the US-East-1a zone with his AWS account. Ray has launched two
EC2 instances in the US-East-1a zone with his AWS account. Which of the below entioned statements will help George
and Ray understand the availability zone (AZ) concept better?
A.
The instances of George and Ray will be running in the same data centre
B.
All the instances of George and Ray can communicate over a private IP with a minimal cost
C.
All the instances of George and Ray can communicate over a private IP without any cost
D.
The US-East-1a region of George and Ray can be different availability zones
Explanation:
Each AWS region has multiple, isolated locations known as Availability Zones. To ensure that the AWS resources are
distributed across the Availability Zones for a region, AWS independently maps the Availability Zones to identifiers for
each account. In this case the Availability Zone US-East-1a where George’s EC2 instances are running might not be the
same location as the US-East-1a zone of Ray’s EC2 instances. There is no way for the user to coordinate the AvailabilityZones between accounts.
D
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D
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Should be A. The statement says they run the instances in the same zone not a region.
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In zones with the SAME NAME, but for both accounts the same zone name doesn’t mean the same zones
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D.
While a single Availability Zone can span multiple data centers, no two zones share a data center.
https://blog.rackspace.com/aws-101-regions-availability-zones
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