What is one trend that puts pressure on existing network infrastructures and drives the need for software-defined networking (SDN)?
A. Companies are implementing private clouds, and network administrators must be able to respond to service requests quickly.
B. Companies increasingly host fewer functions per hypervisor.
C. Network infrastructures are allocating too much bandwidth to voice, video, and collaboration traffic, starving out other applications.
D. Network administrators increasingly provision security to permit only company-owned assets to connect to the network.
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