Components Of A Network

What Are the 6 Main Components Of A Network

Router

"A Router is a device that forwards Data Packets between Computer networks, creating an overlay Internet". You Have A Router at Home, It allows you to go onto the internet. It Will most likely Have all your devices on it . This Is The most Familiar Type Of Router "Home And Small Office" And these Type of routers just simply pass data such as web pages, IM, Emails and Online Videos between The Computer your on and the internet. You Will most Likely Have A Wired Or Wireless Router Connection.

Routers Definition

A router is connected to two or more data lines from different networks. When a data packet comes in one of the lines, the router reads the address information in the packet to determine its ultimate destination. Then, using information in its or routing policy, it directs the packet to the next network on its journey. Routers perform the "traffic directing" functions on the Internet

Switch

What Switch is

A Network switch is a computing network device that two different network types (network segments and network devices) A Network switch is also known as a Multi-port network bridge. It Processes and routes Data From/At The Data Link, it can also process data at the network layer

Definition of a Switch

A network switch is a small hardware device that joins multiple computers together within one Local Area Network(Lan). Technically, network switches operate at layer two (Data Link Layer) of the OSI Model.

Hub

What Is A Hub

There Is Three Different types Of Hubs.(Ethernet Hubs,USB Hub and Hyperlink-Induced Topic Search (HITS).An Ethernet hub, active hub, network hub, repeater hub, multiport repeater or hub is a device for connecting multiple Ethernet devices together and making them act as a single Network Segment. It has multiple Input And Output(I/O) ports, in which a Signal introduced at the input of any Port appears at the output of every port except the original incoming.

A USB hub is a device that expands a single USB port into several so that there are more ports available to connect devices to a host system,USB hubs are often built into equipment such as computers, KeyBoards, Monitors or printers. When such a device has many USB ports they all usually stem from one or two internal USB hubs rather than each port having independent USB circuitry.

Server

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What Is A Server

n most common use, a server is a physical computer (a Computer Hardware system) dedicated to run one or more services (as a Host), to serve the needs of the users of other computers on a network. Depending on the computing service that it offers it could be a Database server, file server, mail server, print server, web server and Gaming server or some other kind of server.

ommon types of network servers include:

  • Web servers
  • proxy servers
  • FTP servers
  • online game servers

Client

Client

A client is a piece of Computer hardware or Software that accesses a service made available by a server. The server is often (but not always) on another computer, in which case the client accesses the service by way of a network,A client is a computer program that, as part of its operation, relies on sending a request to another computer program (which may or may not be located on another computer). The term "client", however, may also be applied to computers or devices that run the client software or users that use the client software

NIC

Network interface controller

A network interface controller (also known as a network interface card, network adapter, LAN adapter and by similar terms) is a computer hardware component that connects a computer to a computer network.

Early network interface controllers were commonly implemented on expansion cards that plugged into a computer bus; the low cost and ubiquity of the Ethernet standard means that most newer computers have a network interface built into the motherboard.

More Components of a network

Names

There Are 3 Ring network, Star Network and a Bus Network

A Ring Network

What is It

A ring network is a network topology in which each node connects to exactly two other nodes, forming a single continuous pathway for signals through each node - a ring. Data travels from node to node, with each node along the way handling every packet.

Because a ring topology provides only one pathway between any two nodes, ring networks may be disrupted by the failure of a single link. A node failure or cable break might isolate every node attached to the ring.

A Star Network

A Star Network

Star networks are one of the most common Computer network topology. In its simplest form, a star network consists of one central switch or hub or computer, which acts as a conduit to transmit messages. This consists of a central node, to which all other nodes are connected; this central node provides a common connection point for all nodes through a hub. In Star topology every node (computer workstation or any other peripheral) is connected to central node called hub or switch.



Advantages

Better performance: star topology prevents the passing of data packets through an excessive number of nodes. At most, 3 devices and 2 links are involved in any communication between any two devices. Although this topology places a huge overhead on the central hub, with adequate capacity, the hub can handle very high utilization by one device without affecting others.


Disadvantages

High dependence of the system on the functioning of the central hub. Failure of the central hub renders the network inoperable


Bus Network

What IS The Bus Network

A bus network topology is a Network architecture in which a set of client are connected via a shared communications line/cables, called a bus. There are several common instances of the bus architecture, including one in the motherboard of most computers.Bus networks are the simplest way to connect multiple clients, but may have problems when two clients want to transmit at the same time on the same bus

Advantages

  • Ease of installation.
  • Simple and cheap.
  • If one computer fails it does not affect the other computers.
  • Printers can be shared.
Disadvantages

  • If the main cable fails, all the other sources will die
  • Reconfiguration, fault isolation and installation of new devices tend to be difficult since the network is designed to be most efficient during installation.
  • The longer the distance covered by a signal along the shared communication line the greater the heat is produced due to energy being transformed to heat making the signal weaker the farther it travels.