A company is deploying a multi-instance application within AWS that requires minimal latency between the instances. What should a solutions architect recommend?
A.
Use an Auto Scaling group with a cluster placement group.
B.
Use an Auto Scaling group with single Availability Zone in the same AWS Region.
C.
Use an Auto Scaling group with multiple Availability Zones in the same AWS Region.
D.
Use a Network Load Balancer with multiple Amazon EC2 Dedicated Hosts as the targets.
among placement groups,a Cluster group allows instances to be in a single AZ to improve latency and throughput between the instances so answer AAAA
makes sense
While A is correct,
analysis of 'D':
aim is to use same underlying server ie control the placement in Dedicated host
(to reduce latency).
'Dedicated hosts' allow us to own entire server and control EC2 placement.They also give us control over cores/socket(for scenarios involving licensing based on cores).
'Dedicated instances' also allows us to own the server, but we cannot control which EC2 will land up on which server.
'D' would be correct if it was modified to:
Use a Network Load Balancer with multiple Amazon EC2 instances in same Dedicated Host as the targets.
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