How to create a LAN between two guest OSes in VirtualBox?

Question

virtual box

There are 2 OS, one Windows 7 Ultimate and Linux Debian.
How to connect them to one locale so that you can check from Linux via arp -a ?
What network settings should be made in the virtual machine settings, which network adapters to choose, what type of connection to choose and how to configure the OS itself?

Answer 1

1) мост на каждой
2) раздача с роутера ИП адреса в той же сети, гже и комп
3) profit

Answer 2

4) приватная сеть между виртуалками