When a new program was added and executed on a server that has the virtual memory
function, a lot of swapping occurred and the performance of existing programs in
operation was decreased. In order to resolve this problem, which of the following is
the most appropriate method?
a) Installation of a high-speed CPU
b) Installation of a faster type of main memory
c) Installation of additional hard disk drives to expand the capacity of auxiliary storage
d) Installation of more main memory