Briefing Amazon Knowledge

which of the following feature should you use?

In order to optimize performance for a compute cluster that requires low inter-node latency, which of the
following feature should you use?

A.
Multiple Availability Zones

B.
AWS Direct Connect

C.
EC2 Dedicated Instances

D.
Placement Groups

E.
VPC private subnets

Explanation:

http://aws.amazon.com/ec2/faqs/ (enhanced networking)