A. By troubleshooting and resolving all the network issues.
B. By reducing the number of physical machines.
C. By reducing the number of physical network cables plugged into hosts.
D. By reducing the virtual network traffic.
Explanation: vSphere supports two main categories of virtual switches. It supports the standard switch and the distributed switch. Both switches help you reduce network clutter by reducing the number of physical network cables plugged into your ESXi hosts. Reference:http://webpages.uncc.edu/~smcleo12/teaching_portfolio_sterling_mcleod.pdf