Why does the VM software I installed provide 4 virtual network connections?
How are these multiple VM network connections typically used, and what has to be configured differently for each?
6.If this virtual machine was converted from a physical system, verify that there are no hidden network adapters present.
VirtualBox allows you to configure up to 8 virtual NICs (Network Interface Controllers) for each guest vm (although only 4 are exposed in the GUI) and for each of these NICs you can configure:
VM's have NIC's that connect to virtual switches that are then assigned physical ports., most generally 6 nics per host
1 port for management network.
2 ports for the guests,
2 ports for iSCSI / NFS
1 Port for vMotion
I'm not sure I'm technical enough to relate to why you would want to be able to do all this - what type of applications or uses require such connectivity on a single machine ?
...selling what ?
My computer has only wifi but came out 4 network adaptors,so its normal as some are virtual.
VM software usually sets up network connections for network adapters that are installed on your computer. LAN and wireless are configured same as host OS.