Presentation on theme: "Mr C Johnston ICT Teacher"— Presentation transcript:
1 Mr C Johnston ICT Teacher www.computechedu.co.uk BTEC IT Unit 09 - Lesson 07 Network ComponentsMr C JohnstonICT Teacher
2 Session ObjectivesUnderstand the different categories of network components which are required to build a network,Be able to explain the key components from each category required to build a network.
3 Network Component Categories When building a network, the components used fall into a number of different categories,Network devicesHardware which users make use of on the networkInterconnection devicesHardware which connects the network devices users use together so they can talk to each otherConnectors and cablingUsed to create a link between the network devices and interconnection devicesSoftwareInstalled / embedded into network and interconnection devices, so users can access network services and administrators can manage.Several components will be needed from each category in order for the network to operate.
4 Content To CoverFor P3 and P4 you need to explain the purpose, features and functions of the following network componentsNetwork devices:workstations; servers eg print, mail, file, web, proxy; others eg network interface cards (NIC), printers, UPS, NASInterconnection devices:equipment eg router, hub, switch, wireless access points, gateway, bridge, repeater,Connectors and cabling:Types of WAN connection (leased line; dedicated line; ADSL; DSL; cable broadband; mobile technology) media types eg STP, Category 5, 6; 7; coaxial, UTP, fibre optic; wireless; cable/connection standards, patch panels, face plates,Software:network operating system (client / server); virus checker; firewall; other communication software eg client; web browsers; ftp; network utilities (monitoring, management, fault finding); embedded web interfaces, network card drivers;Commercial systems:software eg Mac OSX, Linux, Windows, Citrix
5 P3 and P4 RequirementsP3 requires you to make some notes which explain the key components for connection to network systems and show that you can apply them,P4 requires you to make some notes which explain the function of interconnection devices.Perhaps present your notes in a table creating a detailed entry for each component and draw and application diagram.CategoryNamePurposeFeatures and FunctionsPictureBTEC Book – Unit 09 p11(start at chapter 2) - 18
6 Programming Constructs P3 – Explain the key components required for client workstations to connect to a network and access network resourcesP4 – Explain the function of interconnection devicesProgramming ConstructsFor P3, learners are explaining the key components for connection to network systems. This, along with the evidence for P4 (the function of interconnection devices), could be produced as an information ‘leaflet’, which may be paper- or web based. Use a diagram to show that understand the exact requirements for a client to connect to a network.Diagram to show key components required to access network resources
7 P3 / P4 Recap…..Need a EXPLAIN a range of network devices…. Explain means give reasons. Key questions to answer:What device is and what does it do / allow to happen on the network,Key features / specifications of the device – data transfer speed,Why the device is needed,How does the device work,Any advantages and disadvantages of using this device.Content to cover:Network devicesServers (as many as you can think of but certainly print, web, file, proxy, mail, authentication)Workstations (as many different types as you can think of)Network cards (wired, wireless, pci / dongles)Printers (ensure you talk about network printers only!!)NASUPS
8 Interconnecting Devices Connectors & Cabling Hub (active and passive) / Router / Switch / Bridge / Wireless Access Point / Repeater / GatewayConnectors & CablingType of WAN connection (Leased line, Dedicated line, ADSL, DSL, cable, mobile)Types of cable and their connector – UTP / STP, Cat 5e, Cat 6, Cat 7, Coax Fibre,Cabling hardware – patch panels, rack cabinets, trunking, face plates,Types of wireless connection,SoftwareNetwork operating system – for servers, for clients,Network card driverNetwork utilitiesApplication software so can make use of the network and keep network secureFirmware and embedded softwareCommercial systems:software eg Mac OSX, Linux, Windows, Citrix
10 Network Devices Hardware which users make use of on the network Workstations / ClientsAllows access to the networks services,Not necessarily a desktop PC or laptop anymore.ServersPowerful computers which provides the network with a service e.g. web, , authentication, print, file, network addressing (DNS / DHCP), security,Services provided depends on the software which is installed on the machine,Network cardAll devices which are to connect to the network need some form of network card,Depending on the type of network being used, may be able cable based (UTP, Coax, Fibre), Wireless (802.11a/b/g/n), 3G/4G, Bluetooth.Could be internal (built in) or dongle based.
11 Interconnection Devices Hardware which connects the network devices users use together so they can talk to each otherHubAllows devices on a network to communicate with each other,Broadcasts data to every active port so that the correct device will receive it,SwitchUses switches inside to create a circuit between ports so devices communicating with each other do so directly,RouterUsed to connect different networks together,Wireless Access PointUsed to allow devices to connect wirelessly to the network,BridgeDivides networks into segments – legacy device switches can do this much easier by creating vLANS
12 Connectors and Cabling1 Used to create a link between the network devices and interconnection devices.Unshielded twisted pair (UTP)4 sets of twisted pairs with an outer caseSpeeds up to 1000mbpsHas RJ45 connector in the end#Shielded twisted pair (STP)4 sets of twisted pairs covered in foil then an outer caseLess prone to electrical interference than UTP so less data loss but is dearerHas RJ45 connector in the endCoaxial CableSolid copper cable covered in an insulating plastic case. The case is then covered with a copper mesh which is all encased with another plastic sleeveCan be more rigid that UTP/STP but less interferenceBNC (Bayonet Neill-Concelman) connector on the end
13 Connectors and Cabling2 - Fibre Optics Uses pulses of light rather than electrical signals to transmit the data – therefore is immune to electrical interference,The light is pulsed down hollow glass or plastic tubes – main advantage is distance and speed Tera bits per second over a single 160 km long optical fibre is the current record. (Hollow glass or plastic tube which light is pulsed down,Has a protective cover to protect the light from interference and is immune to electrical interference,Glass can carry longer than plastic,Can travel long distances and is fastExpensive over short distances but very economical over longSC (subscriber connector)orST (straight tip)Fibre Optic CableOverviewConnectorCable Type
14 Connectors and Cabling3 - Other Equipment Wall plates and trunkingUsed in rooms to ensure neat cablingWorkstations plug to wall plates using a short cable,Patch PanelsUsed in machine rooms to form a connection between the cables which come out of wall plates and the switchWall plate cables get brayed onto the back of the patch panel, patch cables (short network cables) go in the front of the panel then into the switch.
15 Software1Installed / embedded into network and interconnection devices, so users can access network services and administrators can manage.Server operating systemInstalled on the server and provides some services to the network,Network service softwareInstalled on the server to provide additional services which were not included with the Server OS e.g. media streaming,Workstation operating systemAllows the client to access the network – will need to include the protocol suite being used on the network,Drivers for the network cards,Security software,Antivirus and firewall to help maintain security of the network
16 Software2 Application software Embedded software Installed on the workstations to allow users to perform tasks and access the services provided by the network e.g. Web browsers, FTP clients, clients, media players,Embedded softwareControl panels built into printers and other interconnection devices to help administrators manage them – usually HTML based.