Which network technology addresses these customer business needs: shrinking budgets and IT staffs, more complex networks, and an increased need for network security?

Which network technology addresses these customer business needs: shrinking budgets and IT staffs, more complex networks, and an increased need for network security?

A.
optical network

B.
network management

C.
storage-area network (SAN)

D.
content delivery network (CDN)

E.
wireless local-area network (WLAN)