Essential Network Hardware and Cabling Standards

Network Hardware Definitions

• NIC (Network Interface Card): An Ethernet adapter that provides network access. Each card features a unique MAC address. A computer connected to a network is referred to as a node.
• Repeater: Extends the range of a physical connection by mitigating electrical signal degradation.
• Hub: Functions as a multi-port repeater, broadcasting every incoming message to all connected nodes.
• Bridge: Interconnects network segments by switching frames based on a MAC address table.
• Switch: Operates similarly to a bridge but supports multiple segments with higher speeds and advanced features, such as virtual networks and remote configuration.
• Router: Operates at the network layer (e.g., IP protocol) to route packets between interconnected networks using routing tables and algorithms to determine the optimal path.

Network Compatibility and Integration

Support for physical and logical layers is critical when selecting a network card. Ensure the hardware is compatible with the workstation and that the operating system includes the necessary drivers to interface with the required protocols.

4.4 Network Cabling

Once workstations, servers, and network cards are in place, the physical interface must be established. The choice of cabling depends on several factors, including speed, distance, interference, and security requirements.

Popular network cabling types include:

• Twisted Pair: Consists of two independently insulated copper wires twisted together and covered by an outer layer.
• Coaxial Cable: Features a central copper conductor surrounded by a braided mesh (ground), separated by a thick insulating layer and an outer protective jacket.
• Fiber Optic: Utilizes light transmission for high-speed, long-distance connectivity.

Connections can also be established via wireless methods such as radio or microwave, each offering distinct advantages and limitations regarding security and signal integrity.