What is a common management problem in modern networks?

A.
Network administrators do not have enough management tools that are specialized for vendors
and technologies, forcing them to use non-standard solutions.

B.
When an application needs to be scaled out, server administrators often lag behind network
administrations due to the greater complexity of software.

C.
Network administrators need automation and standard templates to eliminate the delays and
errors of CLI-based configuration.

D.
As networks have expanded to include mote types of devices, network administrators have had
to work with more Layer 3 networking protocols.