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 Availability Zones
between accounts.