A server cluster looks like a?

A.
Single server from the user’s point of view.

B.
Dual server from the user’s point of view.

C.
Tripe server from the user’s point of view.

D.
Quardle server from the user’s point of view.

Explanation:
A “Cluster” is a grouping of machines running certain services providing high availability and fault
tolerance fro them. In other words, they are grouped together as a means of fail over support. From
the users view, a cluster is a single server, but its only a logical one, you can have an array of 4 server
in cluster all with the same IP address (/achieving correct resolution through ARP), there is no
difference for the client.