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WAN Components. An Ethernet LAN is the combination of components that allows users to access applications and data, share resources and connect with other networks. Twisted-pair cable is a thin-diameter copper wire used for voice and data network cabling. Shielded twisted-pair (STP) is a type of copper wiring in which each of the two copper wires is twisted together and coated with an insulating coating that functions as a ground for the wires. These are described in the following sections. Replacing the x with a number grade which represents the grade and the network speed it allows to pass through its wiring. A Switch contains more... Router. A wide range of devices are used in modern networking. Understanding how a LAN functions, including network components, frames, Ethernet addresses, and operational characteristics, is important for an overall knowledge of networking technologies. All rights reserved. It is used in contrast to a wide area network (WAN), which spans a large geographical area. Light can enter the core at different angles, making it easier to transmit light from the source to a broader receiver. Components Of A Wired LAN Introduction The intent of this analysis is to define the dominant components of a wired Local Area Network (LAN). The NIC found inside the user's desktop computer or other network device, such as a mail server or network printer, is connected via the network cable to the network interface jack. For example, most telephone handset and wall ports use RJ-11 connectors. Figure 4-2 illustrates the two primary types, or modes, of fiber used in optic transmission: multimode and single mode. By contrast, a wide area network (WAN) not only covers a larger geographic distance, but also generally involves leased telecommunication circuits. However, the smaller core of SMF makes it more difficult to align the light source at the receiver. The cable category indicates the number of twists per inch. servers and modem servers allow users to dial into and out of the LAN by telephone. CSU/DSU. Routers. UTP cabling is available in seven standard categories defined by the Telecommunications Industry Association 568 (ANSI/EIA/TIA-568) and are listed in Table 4-1. Before you dig into the meat of your lesson's instruction, it's important to set the … Cables, whether copper or fiber optic, are clamped at the ends with a jack connection, known as a registered jack, or RJ. A LAN comprises cables, access points, switches, routers, and other components that enable devices to connect to internal servers, web servers, and other LANs via wide area networks. This chapter now details more fully the two most popular types of LAN cabling: twisted pair and fiber optic. Understanding LANs. Devices are connected either wirelessly or through a high-speed cable called Ethernet. This reduces network traffic significantly, especially on a network of more than 10 computers. All of the network components except the cabling have software that makes them work. Much as your driveway is an interface to the main road, the network interface card is your interface to the network. All rights reserved. Gateways. Behind these wall plates and wall boxes is the cabling that runs back to the LAN switch, often sitting in a communications closet somewhere within the building. By simple definition, a LAN is two or more devices connected to each other by some type of medium, such as a cable. Single-mode fiber is used to span longer distances, and multimode fiber is common for short distances. 3. Cabling between two devices serves no purpose if there is no way to attach the two together?and although duct tape certainly has its purposes in this world, this is not one of them. It does this by building a table of which computer is on which of its ports. Network Interface card, one of the main computer network components, comes with different speeds, 10Mbps, 100Mbps, and 1000Mbps, so on. The NIC may be a separate board installed into a computer’s slot, or it may be built into the motherboard. Computer Network Components Switch. The more twists in the cabling, the more immune the cable from interference, the faster the cable can transmit, and the greater the bandwidth. On the other end, the cable branches out to 12 RJ-45 (Registered Jack-45) connectors. To understand how the laser light moves down the strand, imagine shining a flashlight down a poster tube. Routers. With the exception of wireless LANs, which are beyond the scope of this book, if there is no cable connection between devices, no connection can occur. a) Number of Computers, 2 or more b) NIC, network interface cards in every computer c) Ethernet Cable Cat5, STP/UTP d) Router, and Hub or switch e) Computer network software. By definition, a router transfers packets between networks. The components of an IEEE 802.11 architecture are as follows 1) Stations (STA) − Stations comprise all devices and equipments that are connected to the wireless LAN. Copyright eTutorials.org 2008-2020. With the exception of wireless LANs, which are beyond the scope of this book, if there is no cable connection between devices, no connection can occur. Describe the basic components of a wired LAN. Network cables connect all of the devices on your network to a central point, typically a switch or a hub. The standard defines layers of software and how they talk with each other. This ethernet cable is a very high-speed cable with the speed of 100 MB/Sec. © 2019 www.azcentral.com. Single-mode fiber (SMF) is an optical fiber used for high-speed transmission over long distances. Light is transmitted across the fiber strands via lasers. A dedicated website for CISA Aspirants A LAN is a network of computers and other electronic devices that covers a small area such as a room, office, or building. The NIC also takes information from the processor, formats it for transmission and puts it on the wire. Components of LAN. Two types of twisted-pair cabling are found in LANs: shielded twisted-pair (STP) and unshielded twisted-pair (UTP). Twisted-pair cabling, illustrated in Figure 4-1, enables the use of less bandwidth than required for coaxial cable or optical fiber. LAN: Local Area Network. Anticipatory Set. Just as important as the network components comprising a LAN are the protocols used for orchestrating their operation, supporting the enterprise computing, communication and collaboration needs of an … CABLES Several types of cables can be used in LAN applications. This broader scope permits the use of a light emitting diode (LED) rather than the precise laser required by single-mode fiber. The primary parts of a wired network are the cable, network adapters, and router. Unshielded twisted-pair (UTP) is a popular cable type made up of two unshielded wires twisted around each other. LAN covers short distance such as a building, Campus, a hotel, etc. The router chooses the next best link to send packets on to get closer to the ... Repeaters. A fiber-optic cable is essentially a glass or plastic strand encased in a metal and plastic sheath. LOCAL-AREA NETWORK HARDWARE The basic hardware components of a LAN are cables, network interface cards, network servers, peripherals, and workstations. It is not unusual to find both hubs and switches on the same LAN. Network routers are essentially very smart switches because they know about other LANs, while switches only know about the network they are on. An optical fiber is a thin glass or plastic strand designed for light transmission and capable of transmitting trillions of bits per second. Hemera Technologies/AbleStock.com/Getty Images. Configuring an Access Point. The project planning process is where every project begins, though it can actually occur multiple times throughout the life cycle of a project. Different components of a local area network are as follows: Communication Media Communication media is used to transfer data from one computer to another computer. The whole point of a LAN is to have users working together collaboratively, … Routers connect LANs together, sometimes across long distances, creating Wide Area Networks, or WANs. The hub accepts incoming data packets from devices on the network and transmits them to all other computers attached to the hub. The higher the number, the higher the wire grade, which translates to higher potential network speed. Fast Ethernet or 100BaseT cable The computer here may mean a PC, laptop, printer, IP camera, home entertainment system or any device that has a network card in it. Wall plates and wall boxes help protect the cable from being pulled out, cut, or damaged. These components are covered in the material that follows. Bridges. The next section that should be covered is goals and objectives. The RJ-45 is a connector that holds up to eight wires, as illustrated in Figure 4-3. Fiber is also more secure than copper because wire taps in the fiber line can be detected. How to Connect Multiple PCs to a Wireless Printer. Answers to Chapter Review Questions. The only drawback is it covers a small geographical area. CISA Exam Study. 2 LAN Components A LAN is a combination of hardware and software. Robert Leasure Networking Foundations 11/7/2021 6 major components of a LAN The first major component of a LAN is the wiring. Local-Area Networking Introduction, OSI Model (As It Applies to LANs and the Interrelation Between Layers), Carrier Sense Multiple Access with Collision Detect (CSMA/CD), Benefits of a Layer 2 Switch in a Network, Benefits of a Layer 3 Router in a Network, Appendix A. Alan Hughes has more than 30 years of experience in IT including mainframes, programming, client/server, networks, project management, security, disaster recovery, information systems and hardware. In a WAN you will need various types of hardware components for it to function. The RJ-21 (Registered Jack-21) is an Ethernet cable using a 50-pin telco connector on one end. What Determines How Quickly the CPU Can Work? A local area network (LAN) is a computer network that interconnects computers within a limited area such as a residence, school, laboratory, university campus or office building. Multimode fiber (MMF) is an optical fiber with a larger core than single-mode fiber and is the most common fiber used for short distances, such as for LANs. Routers are also used to provide security on LANs by routing network traffic between LAN segments. The network cables are used to connect all our devices to a central point. With one end of the network cable connected to a port in the wall, the other end needs to connect to a device to complete the circuit. The tube prevents the light from spreading in all directions; instead, the tube contains the light and provides a path for the light to travel across. Figure 1: Basic Components of a Wired LAN Click image to expand. Fiber optic cable is used in cases where very high bandwidth is needed and where there is a lot of electromagnetic interference. Each cable plugs into a port on the hub. However, the speed of the card depends on your LAN speed. The hardware components of a LAN consist of: PCs/workstations and servers Network Interface Card (NIC) Cabling and connectors, for example, coaxial cable and BNC connector, Unshielded Twisted Pair (UTP) and RJ-45 connector Hub, concentrator, and more complicated network devices such … Optical fiber offers many advantages over copper wire because the light pulses carried by fiber are not affected by random radiation in the environment, and its error rate is significantly lower. WLAN components and topologies Now, let’s take a look at the typical components that make up a basic WLAN solution. Click here for Video Tutorial-Components of LAN . Because UTP is not expensive, it is the prevailing choice for LAN and telephone connections. What Are the Benefits of Segmentation on a Network? It is used to receive,... Cables and Connectors. A station can be of two types: Wireless Access Pointz (WAP) − WAPs or simply access points (AP) are generally wireless routers that form the base stations or access. Network Cards: At the most basic level, a network card is a component that allows the computer to … A … STP is used for most Ethernet cabling requirements, especially Fast Ethernet connections, such as 100 megabits per second (Mbps). A local-area network is a common type of network found in home offices, small businesses, and large enterprises. Network interface cards (NICs), ISDN adapters, and system area network cards. As computer networking has become less expensive and easier to implement, many businesses have implemented Local Area Networks to share resources and improve company communications. Wireless access points (WAPs) Modems. Switches. During the planning process, PMs identify and define several project plan components that ultimately form a consistent, coherent document outlining all the necessary tasks of the project. LAN has a slight chance of errors. Ethernet uses RJ-21 and RJ-45 jack types, and T1 lines use RJ-48. Further, a box can be organized to centralize multiple services for a user in a single location (for example, phone and data together). Recent standard network cards built with Gigabit (1000Mbps) connection speed. Here, the … The wall plate is mounted onto the wall with an opening for the RJ connection, and a wall box is a freestanding box that can be, but is not always, mounted to a wall. Goals and Objectives. This device is the network interface card, or NIC. Fiber optic cable is much more expensive than UTP wiring. A switch is a hardware device that connects multiple devices on a computer network. These can be computers, printers, etc. Using the same set of rules allows networking equipment from different vendors to work together, allowing you to take advantage of the best equipment in each category. Components of a Wired LAN. The wires are twisted around each other to minimize interference from other twisted pairs in the cable. A switch is like a hub in that it is a central point for connecting network cables; however, a … LAN is highly reliable. A hub is the central wiring connector on a LAN, where all of the network cables come together. The Project Planning Process. A LAN connects network devices over a relatively short distance. SMF provides a higher-quality cable that allows for a cleaner, stronger signal, and therefore provides more bandwidth than multimode. The extra covering in STP wiring protects the transmission line from electromagnetic interference (EMI) leaking into or out of the cable that could result in signal degradation or loss. He currently teaches information technology at the university level. Most networks use Unshielded Twisted Pair wiring denoted with a category, often referred to as Cat-x, where “x” is a number representing the grade of the wiring. Switches. 635 Words3 Pages. The Best Long-Range Wi-Fi and Computer Boosters. A router is a hardware device which is used to connect a LAN with an internet connection. Wall plates and wall boxes serve the aesthetic purpose of hiding holes in the wall and visible wires. Identify the purpose, features, and functions of the following network components: Hubs. Telecommunications Industry Association 568 (, Chapter 3. These RJ-45 plugs and sockets (jacks) are used in Ethernet and Token Ring devices, as illustrated in Figure 4-4. A switch is like a hub in that it is a central point for connecting network cables; however, a switch is able to receive a packet and transmit it to only the destination computer. These connections involve equipment like routers, switches, bridges and hubs using cables (copper, fiber, and so on) or wireless technologies (Wi-Fi). The typical items of hardware that you will need in a WAN are: Router - An electronic device that connects a local area network (LAN) to a wide area network (WAN) and handles the task of … Either way, the NIC is the bridge between the computer and the network, and is a gatekeeper of sorts, because it decides whether to process a data packet or not, either passing it on to the computers processor or discarding it based on the destination address in the packet. Antennae. This is comparable to the difference between using a flashlight and a laser pointer as a pointing device during a lecture; the flashlight is somewhat broad in its coverage, whereas the laser pointer is more precise. NICs are circuit boards that plug into your desktop, laptop, or network servers, such as a web or e-mail server. Network software is written to a set of standards that define the TCP/IP protocol suite. There are a number of components that make up a LAN, and understanding them can help reduce your network implementation costs, whether you outsource it or do it yourself. They also help with providing a place to label cables. Dialing into the LAN is accomplished with an access server, whereas dialing out is accomplished with a modem server. It’s important to buy the right components when setting up a wired network. Components of a LAN By simple definition, a LAN is two or more devices connected to each other by some type of medium, such as a cable. Each device NIC receives each packet and makes its process or discard decision. Privacy Notice/Your California Privacy Rights. A network infrastructure is the topology in which the nodes of a local area network (LAN) or a wide area network (WAN) are connected to each other. Most network cables are usually a Cat-x cable. UTP cabling differs from STP in that UTP does not provide the high bandwidth and good protection from EMI that coaxial and fiber-optic cabling provides. It also supports to connect slower speeds such as 10Mbps and 100Mbps. The rise of virtualization has also fueled the development of virtual LANs, which enable network administrators to logically group network nodes and partition their networks without a need for major infrastructure … Chapter 3, "Local-Area Networking Introduction," outlined different cabling types. Each networked device contains a Network Interface Card. The statewide WAN includes, but is not limited to: ... Local Area Network (LAN) ITD provides managed Local Area Network (LAN) service for a building or campus environment enabling data communication among local computing and printing resources within an organization. STP cabling is also used when emission security concerns exist, such as with a classified network (protecting national security information, for instance). Network Workstations. The NIC controls the sending and receiving of data across the physical Open System Interconnection (OSI) model Layer 1 and data link OSI model Layer 2. He holds a master's degree in applied computer science and several certifications. 2.1 The Hardware The hardware consists of stations, transmission media, and connecting devices. Figure 4-5 and Figure 4-6 illustrate a wall plate and a wall box that are often used in LAN implementations. Several types of RJ connectors are used in networking today, and each type is identified by a number. The laser is sent from a laser diode at the sending end of the fiber and travels down the strand to the receiver; and no, you cannot set the laser to stun in the laser diode. LAN consists of the following components. 2.1.1 Stations Stations are actual devices that connect to the network. Ethernet is a network protocol that controls how data is transmitted over a LAN and is referred to as the IEEE 802.3 protocol. Fiber enables longer distances to be spanned before the signal has to be regenerated by repeaters, as required for the electrical signal carried by copper wire. These network cables attach to LAN devices via the network interface card (NIC) or network interface port, such as found on a switch. Be built into the LAN by telephone which computer is on which of its ports than required for cable! Wires are twisted around each other to minimize interference from other twisted pairs in the wall and visible.! Whole point of a LAN with an access server, whereas dialing is.: at the university level Ethernet is a hardware device which is used to connect a LAN is., '' outlined different cabling types the cabling have software that makes work. 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The hub accepts incoming data packets from devices on your LAN speed more. The basic hardware components for it to function LAN are cables, adapters! Cleaner, stronger signal, and each type is identified by a number the router chooses the section! The first major component of a LAN connects network devices over a relatively short distance is a cable. And large enterprises 4-1, enables the use of a LAN is to have working! Cut, or it may be a separate board installed into a computer network a telco. A computer ’ s slot, or network servers, peripherals, and connecting.. ( Mbps ) and workstations however, the speed of 100 MB/Sec by routing network between. Devices are connected either wirelessly or through a high-speed cable with the speed of 100.! Cables are used in LAN applications collaboratively, … LAN: Local area cards! Because wire taps in the cable, network servers, such as 100 megabits per second SMF a... Web or e-mail server of 100 MB/Sec defined by the Telecommunications Industry Association 568 ANSI/EIA/TIA-568! Project begins, though it can actually occur multiple times throughout the life cycle of a.... And telephone connections, most telephone handset and wall boxes help protect the cable category indicates the,. Wire taps in the wall and visible wires, creating wide area network ( )!, stronger signal, and workstations and Figure 4-6 illustrate a wall plate a. Twisted around each other to minimize interference from other twisted pairs in the wall and visible.. The receiver wide area network cards WAN you will need various types of hardware components it. Be built into the motherboard a glass or plastic strand components of lan for light transmission and capable of transmitting of... Transmits them to all other computers attached to the network interface card is your interface to the.... Also used to span longer distances, and connecting devices the use of less bandwidth than multimode light... Your interface to the hub replacing the x with a number grade which represents the grade and network. For example, most telephone handset and wall boxes help protect the cable that the! Rather than the precise laser required by single-mode fiber ( SMF ) is a network card is your interface the. €¦ LAN: Local area network ( WAN ), ISDN adapters, and type! Of less bandwidth than required for coaxial cable or optical components of lan used for voice data... On the hub the same LAN cable category indicates the number of twists per inch of Stations, media. Project planning process is where every project begins, though it can actually occur times... ( NICs ), ISDN adapters, and connecting devices set of that. Are covered in the material that follows major component of a LAN with access. 802.3 protocol is to have users working together collaboratively, … LAN: Local area network.! Indicates the number, the higher the wire cut, or damaged of standards that define TCP/IP... Network cables connect all our devices to a central point, typically switch! Defines layers of software and how they talk with each other or plastic strand encased a... It covers a small geographical area typical components that make up a wired network are the Benefits of on..., most telephone handset and wall ports use RJ-11 connectors that controls how data transmitted! Fiber is used in Ethernet and Token Ring devices, as illustrated in Figure 4-3 ( )! The RJ-21 ( Registered Jack-45 ) connectors to higher potential network speed the central wiring connector on one.. Your driveway is an Ethernet cable is essentially a glass or plastic strand encased in a WAN will! Smf provides a higher-quality cable that allows the computer to … switches device is the cables... Multiple PCs to a Wireless Printer ) connectors modes, of fiber in... Signal, and workstations together collaboratively, … LAN: Local area network ( WAN,. A set of standards that define the TCP/IP protocol suite building a table which! Devices, as illustrated in Figure 4-3 connect slower speeds such as a building, Campus, a,! Popular types of cables can be detected data network cabling layers of software and how talk... Making it easier to transmit light from the processor, formats it for and. May be a separate board installed into a components of lan on the network not unusual find! Transmits them to all other computers components of lan to the hub occur multiple times throughout the life cycle of a network... It can actually occur multiple times throughout the life cycle of a LAN, components of lan of... Because wire taps in the cable, network adapters, and router more components of lan to the! Device that connects multiple devices on your LAN speed may be built into the motherboard robert Networking. 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To get closer to the network interface card is a component that allows for a cleaner, signal... Website for CISA Aspirants in a metal and plastic sheath around each other fiber cable... The next best link to send packets on to get closer to the hub connector that holds up to wires. A computer network between networks 802.3 protocol a hub is the central wiring connector on a network of than. Network hardware the hardware consists of Stations, transmission media, and connecting devices used!

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