A ticket site wants the number of virtual machines to grow when CPU stays high and to shrink when sales are quiet. Which cloud trait is that?
Select an answer to reveal the explanation.
Short Explanation
The site should stretch when the crowd shows up and snap back when the crowd leaves. That stretch is the rapid elasticity you configure for the virtual machines. Sharing hardware with other customers, paying for data that leaves, or belonging to an industry cloud does not add and remove machines as the CPU load changes.
Full Explanation
Rapid elasticity is the cloud trait of scaling resources up and down as demand changes. Growing the virtual-machine count while CPU stays high and shrinking it when sales are quiet is that trait. Multitenancy means several customers share the same underlying systems. Sharing is not the same as adding machines when CPU rises. Metered egress is a bill for data leaving the provider. A bill does not create or remove virtual machines. Community-cloud membership means a group of organizations share a cloud for a common purpose. Membership itself does not scale the ticket site with CPU. Exam caveat: elasticity still has to be configured. A provider does not add machines unless an autoscale rule or an operator says when CPU is high enough. Operational check: raise a test load, watch a new machine appear, drop the load, and confirm the extra machine is removed. Record the CPU threshold the autoscale rule uses so a later change does not add machines on a quiet day. Drop the test load and confirm the extra machine is removed, not left running.