LINE CARD Meaning and
Definition
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A line card is a component of a computer networking system or telecommunications device that interfaces between the system's central processing unit (CPU) and the system's input/output (I/O) ports. It serves as an interface between the central system and networking devices, such as routers, switches, or modems, allowing them to communicate with each other.
A line card typically consists of a printed circuit board (PCB) that contains various electronic components, such as microchips, memory, and transceivers. It offers multiple physical ports or interfaces, such as Ethernet ports, to connect networking devices or other line cards. These ports enable the transfer of data, signals, or network traffic between different devices within the system.
Line cards are essential for managing data and ensuring seamless communication in networking systems. They provide the means to transmit and receive data packets, regulate the flow of traffic, and perform various operations, such as packet routing, switching, or filtering. They can handle different types of network protocols, including Ethernet, IP, or ATM.
In large-scale network switches or routers, line cards are often hot-swappable, allowing for easy replacement or addition without disrupting the system's operation. Line cards are also commonly used in telecommunications equipment, such as carrier-grade switches or access devices, to connect subscribers to the network.
Overall, line cards play a crucial role in enabling efficient and reliable network communication by providing the necessary interfaces and processing capabilities within a networking system.
Etymology of LINE CARD
The etymology of the word "line card" can be broken down as follows:
1. Line: The term "line" has its origins in the Latin word "linea", meaning a string, linen thread, or a boundary. Over time, it also came to refer to a straight mark or stroke.
2. Card: "Card" ultimately derives from the Latin word "charta", meaning paper or leaf of papyrus. It transformed into "card" in late Middle English to refer to a thick, stiff paper or cardboard.
Combining these two words, "line card" refers to a sheet or card used to denote or display various lines or products. In modern usage, a line card often refers to a list or display of products or services offered by a company, especially in the telecommunications industry.
