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An overview of components of computer networking

By means of a unique hardware addresses MAC address programmed on the card chip, the data-link protocol uses these addresses to detect other systems on the network so that it can transfer data to the correct destination via the wired or wireless network. There are two forms of network cards: The wired NIC employs cables and connectors as a medium to transfer data, while in the wireless cardthe connection is made using antenna that uses radio wave technology.

All current laptop computers are integrated with wireless NIC in addition to the wired adapter. Network Card Speed Network Interface card, one of the key computer network componentscomes with different speeds of 10Mbps, 100Mbps and 1000Mbps, etc. Current standard network cards are made with Gigabit 1000Mbps connection speed which supports slower speeds such as 10Mbps and 100Mbps as well.

  • These types of modem are not usually integrated with a computer motherboard but come as separate devices which can be installed on the PCI slots found on motherboard or a standalone device;
  • In Summary Implementing a network at an office or home, these are the essential computer network components needed however depending on the circumstance some of the devices can be discounted;
  • Fiber-optic cable Optical fiber is a high-speed cable which transmits data via light beams uses laser or LED light instead of electrical pulses in glass bound fibers;
  • The choice of wired or wireless routers is influenced by on the physical setting, speed and cost.

However, the actual transmission speed is determined by the LAN speed. Network Hub Hub is a network component that divides a network connection like a central dissemination centre for multiple devices. When a computer request information from a network or a particular computer, it transmits the request to the hub through a cable.

Computer Network Components

The hub receives the request and broadcasts it to the entire network. Each device in the network would then work out if the broadcast data is for them or just drop it if it is not. This consumes more bandwidth on the network and limits the amount of communication.

Currently Hubs are almost obsolete and superseded by more advanced network communication equipment such as Switches and Routers. Network Switches Switch is like a smart Hub made in with advanced features like the ability to form tables that keep updated about all the computer or device and on which switch port it is on. Using the physical device addresses in each incoming messages, it delivers the message to the correct destination or port.

Nevertheless both switch and hub have similar features: Several RJ-45 ports, power supply and connection lights. Switches do not broadcast the received message to entire network like the Hub but rather before transmitting, it analyses which system or port should the message be transmitted to.

Networking Components and Devices

The switch connects the source and destination directly which increases the speed of the network. Switching technology aids to ease congestion on a network and is usually used for networks of ten or more devices. Routers are similarly employed to link one local area network LAN to another, often across long distances through commercial carriers. Routers are actually smart switches in that they are conscious of other networks.

All about cloud computing, networking and data analytics

They can dynamically update their routing information, discovering when a route to a network is down and finding if another route is accessible. Generally, routers include a switch which means that it can be used as a switch as well. The router portion links the network to the Internet and the switch portion allows the computers to communicate with each other and to the internet.

  • There are several transmission media types, some of which are listed below;
  • They can dynamically update their routing information, discovering when a route to a network is down and finding if another route is accessible;
  • They can dynamically update their routing information, discovering when a route to a network is down and finding if another route is accessible;
  • Wireless Wireless has become prevalent in homes and small offices owing to the ease and low cost of setting up a network.

The choice of wired or wireless routers is influenced by on the physical setting, speed and cost. Network Modems An analogue or digital modem allows connection to the internet over the existing telephone line. These types of modem are not usually integrated with a computer motherboard but come as separate devices which can be installed on the PCI slots found on motherboard or a standalone device.

The high speed connection can be DSL Digital Subscriber Line from a telephone company or cable cable modem from a cable television provider. Cellular modem is employed when the cellular data mobile network 3G and above is used to access the internet, usually provided by cellular mobile operators. Fiber Broadband Modem is used to achieve even higher speed connection, in the Gigabits range to the internet via optical fiber network. Network Cables and Connectors The networking devices will not work well unless they are connected to each other which is done via different media.

Cable is one transmission media which can transmit communication signals.

The wired network topology uses special type of cable to link computers on a network. There are several transmission media types, some of which are listed below. Twisted pair wire The most universal cable media is commonly named Ethernet cabling and it is categorised as Category 1, 2, 3, 4, 5, 5E, 6 and 7.

The categories 5E, 6 and 7 are meant for high-speed that can transmit 1Gbps or more. Coaxial cable Coaxial cable is similar to TV installation cable and it is more costly than twisted-pair cable, however provides high data transmission speed. Fiber-optic cable Optical fiber is a high-speed cable which transmits data via light beams uses laser or LED light instead of electrical pulses in glass bound fibers.

Wireless Wireless has become prevalent in homes and small offices owing to the ease and low cost of setting up a network. The most widespread wireless protocol is acknowledged as WIFI.

Network Software Software is the intelligence that instructs all the network components to operate together. The suite is structured from actual layers of software, each having its own function. All heterogeneous computer systems can communicate with each other using the same set of rules provided by the suite, irrespective of variation in hardware or operating systems.

Network Servers Servers are digital banks for mass storage of data. Networks use servers to hold the data users may wish to access and also to offer storage space.

For instance, on the Internet, email providers utilise their servers to store the messages users send while web hosts use servers to hold all of the data that a web page displays to visitors. In Summary Implementing a network at an office or home, these are the essential computer network components needed however depending on the circumstance some of the devices can be discounted.

For home or small network, using a Router is appropriate as it also operates as a switch.