Yes we can
Well, you need a network interface card to connect to the Internet and/or your network. I'm pretty sure the answer is no.
You need a Interface card like this one http://www.happcontrols.com/validators/96060600kit.htm
types of network interface card
NIC - Network Interface card (sometimes also called a network adaptor card).
Network Interface Card Its a card that you attach to your computer to interface( or access) network resources and the internet
No, unless if the internal NIC (network interface card) is faulty, unusable, or if you don't have drivers for it.
a Network Interface Card
NIC stands for "Network Interface Card." It is a hardware component that allows a computer to connect to a network and communicate with other devices.
Gigabit Ethernet interface Controller interface Serial interface Multilink Group interface MFR (Multilink Frame Relay bundle interface) Dialer interface Loopback interface Tunnel interface ATM interface
It can also be called a network interface controller, network interface card, network adapter, and LAN adapter.
An input interface card