Welcome to the Community - The standard switch operates as a simple Layer 2 switch so you will have to set the IP address in the VM - you can either hard code the IP or use DHCP - as long as there is a DHCP server on your network. Using the vSphere CLient you will be able to open a console to the VM and set the IP address that way.-
Check out the videos on vSphere Standard switch and installing a Guest Operating system for more information - http://vmwarelearning.com/vsphere5_0/