When I answered this it was C
the most common are twisted pair, coaxial, Ethernet cross over, and fiber optic.
The phrase "elastic" refers to the ability of a user to construct, launch, and terminate server instances as needed while paying per second for active servers.
By giving users control over the physical location of instances, EC2 enables users to reduce latency and increase redundancy. the capacity to acquire resources as needed and to release resources as required. You want to carry out this task automatically in the cloud. Even if an instance becomes ill or based on criteria you specify, Amazon EC2 Auto Scaling will automatically adjust the number of instances in the group to maintain a fixed number of instances.
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