Network card are used to physically attach a computer. True or false
The Correct Answer and Explanation is:
Answer: True
A network card, also known as a Network Interface Card (NIC), is a hardware component that enables a computer to connect to a network. This connection can be wired (through Ethernet cables) or wireless (via Wi-Fi signals), depending on the type of network card installed. Therefore, the statement that “network cards are used to physically attach a computer” is true, especially in the context of wired connections.
Explanation
A Network Interface Card (NIC) plays a vital role in computer networking. It acts as the bridge between a computer and a network, allowing the device to send and receive data. Without a NIC, a computer cannot communicate over a local area network (LAN) or the internet.
In the case of a wired connection, a network card typically features an Ethernet port where an Ethernet cable is plugged in. This cable is then connected to a switch, router, or modem. This is what is meant by “physically attaching” a computer to a network. In older computers, NICs were often installed as separate PCI cards, but modern computers usually have them integrated into the motherboard.
For wireless connections, a wireless NIC or Wi-Fi adapter performs the same function but connects the computer to a network via radio waves instead of a physical cable. These cards can also be integrated into the system or connected externally through USB ports.
NICs have a unique hardware address known as a MAC (Media Access Control) address, which identifies the device on the network. This helps in managing traffic and security within a network.
In summary, a network card is essential for networking purposes. Whether connecting physically via cable or wirelessly, it enables a computer to interact with other devices and access shared resources like printers, servers, or the internet. Thus, the statement is true when referring to physical (especially Ethernet-based) network setups.
