Technology in Action Alan Evans Kendall Martin Mary Anne Poatsy Eleventh Edition Copyright 2015 Pearson Education Inc Technology in Action Chapter 7 Networking Connecting Computing Devices ID: 765956
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Technologyin ActionAlan Evans • Kendall MartinMary Anne PoatsyEleventh Edition Copyright © 2015 Pearson Education, Inc.
Technology in ActionChapter 7Networking:Connecting Computing Devices Copyright © 2015 Pearson Education, Inc.
Chapter Topics Networking FundamentalsNetwork Architectures and ComponentsConnecting to the InternetInstalling and Configuring Home NetworksSecuring Wireless NetworksCopyright © 2015 Pearson Education, Inc.2
Networking FundamentalsComputer networkNodeComputerPeripheral Network device Copyright © 2015 Pearson Education, Inc.3
Networking Fundamentals (cont.)Resource sharingHigh-speed Internet connectionPeripheral devicesFilesCommon communicationsCopyright © 2015 Pearson Education, Inc.4
Networking Fundamentals (cont.)Copyright © 2015 Pearson Education, Inc.5
Networking Fundamentals (cont.)Home networksLarge networks Purchase of equipmentNetwork administrationBenefits usually outweigh disadvantages6Copyright © 2015 Pearson Education, Inc.
Networking Fundamentals (cont.)Data transfer rate (bandwidth)ThroughputMeasured in megabits per second (Mbps)7Copyright © 2015 Pearson Education, Inc.
Network ArchitecturesClassified by:Distance between nodesHow they are managedRules used to exchange data between nodesCommunications medium usedCopyright © 2015 Pearson Education, Inc.8
Network Architectures:Defined by DistanceDistance between nodesCopyright © 2015 Pearson Education, Inc.9
Network Architectures:Defined by DistancePersonal area network (PAN) Local area network (LAN)Home area network (HAN)Copyright © 2015 Pearson Education, Inc.10
Network Architectures:Defined by Distance (cont.)Metropolitan area network (MAN) Wide area network (WAN)Copyright © 2015 Pearson Education, Inc.11
Network Architectures:Defined by Level of AdministrationAdministered in one of two waysCentral administrationLocal administrationCopyright © 2015 Pearson Education, Inc.12
Network Architectures:Defined by Level of AdministrationCopyright © 2015 Pearson Education, Inc.13
Network Architectures:Ethernet ProtocolsEthernet networkEthernet protocol for communicationDeveloped by the Institute of Electrical and Electronics Engineers (IEEE)802.3802.11Copyright © 2015 Pearson Education, Inc.14
Network Architectures:Ethernet Protocols (cont.)802.11n devices will work with 802.11ac networksBackward compatibilityCopyright © 2015 Pearson Education, Inc.15
Network Architectures:Ethernet Protocols (cont.)Gigabit Ethernet StandardUp to 1 gigabit per second (Gbps) data transfer rate10 gigabit Ethernet is available Copyright © 2015 Pearson Education, Inc.16
Network ComponentsAll networks must include:Means of connecting nodes to networkCables or wirelessSpecial devices that allow nodes to communicate SoftwareCopyright © 2015 Pearson Education, Inc.17
Network Components (cont.)Copyright © 2015 Pearson Education, Inc.18
Network Components:Transmission MediaCopyright © 2015 Pearson Education, Inc.19Communications channel between nodesWireless networksRadio wavesWired networksCables
Network Components:Transmission Media (cont.)Copyright © 2015 Pearson Education, Inc.20UTP cableTypes of UTP cableCat 5ECat 6Cat 6a
Network Components:Transmission Media (cont.)Copyright © 2015 Pearson Education, Inc.21
Network Components:Transmission Media (cont.)Copyright © 2015 Pearson Education, Inc.22Decreased throughput in wireless networks Magnetic and electrical sourcesOther wireless networksBuildings and metalDistanceSignal coding
Network Components:Transmission Media (cont.)Copyright © 2015 Pearson Education, Inc.23Network can be both wireless and wiredPortable devices—wireless Stationary devices—usually wiredWired connections are faster
Network Components:Basic Network HardwareCopyright © 2015 Pearson Education, Inc.24Network adapterNetwork interface card (NIC)Broadband InternetRequires a modemCable or DSLTranslates the broadband signal
Network Components:Basic Network Hardware (cont.)Copyright © 2015 Pearson Education, Inc.25PacketsCommunication Flow between network nodes
Network Components:Basic Network Hardware (cont.)Copyright © 2015 Pearson Education, Inc.26RouterSwitch
Network Components:Basic Network Hardware (cont.)Copyright © 2015 Pearson Education, Inc.27
Network Components:Basic Network Hardware (cont.)Copyright © 2015 Pearson Education, Inc.28Router Connected directly to modemAll other devices connected to the routerWired or wireless
Network Components:Network SoftwareCopyright © 2015 Pearson Education, Inc.29Operating software for P2P networkingClient/server network Communicate through centralized serverSpecialized network operating system (NOS) software
Network ComponentsNetwork SoftwareCopyright © 2015 Pearson Education, Inc.30
Connecting to the InternetHome networkShare an Internet connectionMust purchase Internet access from ISPSpecialized providersCompanies that provide other servicesCopyright © 2015 Pearson Education, Inc.31
Connecting to the Internet (cont.)Connection choicesBroadbandDial-upCopyright © 2015 Pearson Education, Inc.32
Connecting to the InternetWired Broadband ConnectionsBroadbandHigh-speed Internet Data transmission rate of 5 Mbps or greaterStandard wired broadband technologiesCableDigital subscriber line (DSL) Fiber optic serviceCopyright © 2015 Pearson Education, Inc. 33
Connecting to the Internet”Wired Broadband Connections (cont.)Satellite broadband Mobile broadbandCopyright © 2015 Pearson Education, Inc.34
Connecting to the Internet:Wired Broadband Connections (cont.) Cable InternetDSLFiber optic serviceCopyright © 2015 Pearson Education, Inc.35
Connecting to the Internet:Wired Broadband Connections (cont.) Satellite InternetCopyright © 2015 Pearson Education, Inc.36
Connecting to the Internet:Wireless Internet AccessWireless Internet at homeRouter with wireless capabilitiesBuilt in WiFi on devices Laptops, smartphones, game systems, and personal media playersCopyright © 2015 Pearson Education, Inc.37
Connecting to the Internet:Wireless Internet Access (cont.)WiFi hotspot Wireless in-flight InternetGogoCopyright © 2015 Pearson Education, Inc.38
Connecting to the Internet:Wireless Internet Access (cont.)Mobile broadband3G or 4G capabilitiesCopyright © 2015 Pearson Education, Inc.39
Connecting to the Internet:Wireless Internet Access (cont.)Mobile Broadband 3G 3 Mbps4G from a fixed location 1 Gbps4G LTESupport less than 1 GbpsCopyright © 2015 Pearson Education, Inc.40
Connecting to the Internet:Wireless Internet Access (cont.)3G or 4G capabilitiesBuilt in on many devicesUSB modem is available Mobile hotspotCopyright © 2015 Pearson Education, Inc.41
Connecting to the Internet:Dial-Up ConnectionsHigh-speed70% of Internet usersDial-up connectionNo high-speed service availableLeast costlySlow speedCopyright © 2015 Pearson Education, Inc.42
Installing and Configuring Home NetworksCopyright © 2015 Pearson Education, Inc.43Home networks SmartphonesGaming consolesTabletsSmart TVs ComputersPrinters
Installing and Configuring Home Networks:Planning Your Home NetworkCopyright © 2015 Pearson Education, Inc.44Setting up a home networkEvaluate your devicesUse the latest wireless Ethernet standard Current Ethernet standard: 802.11ac
Installing and Configuring Home Networks:Planning Your Home NetworkCopyright © 2015 Pearson Education, Inc.45
Installing and Configuring Home Networks:Planning Your Home Network (cont.)Copyright © 2015 Pearson Education, Inc.46Device Manager
Installing and Configuring Home Networks:Connecting Devices to a RouterCopyright © 2015 Pearson Education, Inc.47
Installing and Configuring Home Networks:Connecting Devices to a Router (cont.)Copyright © 2015 Pearson Education, Inc.48All 802.11n routers should work with Windows or OS XRouters for Apple computersAirPort Extreme routerWindows machines can also connect
Installing and Configuring Home Networks:Connecting Devices to a Router (cont.)Copyright © 2015 Pearson Education, Inc.49
Installing and Configuring Home Networks:Connecting Devices to a Router (cont.)Copyright © 2015 Pearson Education, Inc.50
Installing and Configuring Home Networks:Network-Attached Storage DevicesNAS devicesTime CapsuleCopyright © 2015 Pearson Education, Inc.51
Installing and Configuring Home Networks:Home Network ServersCopyright © 2015 Pearson Education, Inc.52Home network server Configured with Windows Home ServerConnect directly as a node
Installing and Configuring Home Networks:Home Network Servers (cont.)Copyright © 2015 Pearson Education, Inc.53
Installing and Configuring Home Networks:Digital Entertainment Devices on a NetworkNetwork-ready devices Wired or wireless connectionBlu-ray players, DVRs, and smart TVsCopyright © 2015 Pearson Education, Inc.54
Installing and Configuring Home Networks:Digital Entertainment Devices on a Network (cont.)Connecting entertainmentAccess and share digital dataAccess Internet entertainment contentPlay multiplayer gamesCopyright © 2015 Pearson Education, Inc.55
Installing and Configuring Home Networks:Digital Entertainment Devices on a Network (cont.)Blu-ray players Integrated wirelessLG Smart TV UpgraderApple TVGoogle ChromecastCopyright © 2015 Pearson Education, Inc.56
Installing and Configuring Home Networks:Digital Entertainment Devices on a Network (cont.)TiVo PremierePlayStation 4Copyright © 2015 Pearson Education, Inc.57
Installing and Configuring Home Networks:Specialized Home-Networking DevicesNew digital picture framesBuilt-in wirelessAccess network and online photosReceive pictures via e-mailCopyright © 2015 Pearson Education, Inc.58
Installing and Configuring Home Networks:Specialized Home-Networking DevicesSecurityWireless monitoring camerasCopyright © 2015 Pearson Education, Inc.59
Installing and Configuring Home Networks:Configuring Software for Your Home NetworkBefore configuring your home network Make sure all nodes have network adaptersCheck wired connectionsConnect the modem to the router and to the InternetTurn on your equipmentOpen the Network and Sharing CenterCopyright © 2015 Pearson Education, Inc.60
Installing and Configuring Home Networks:Configuring Software for Your Home Network (cont.)Copyright © 2015 Pearson Education, Inc.61
Installing and Configuring Home Networks:Configuring Software for Your Home Network (cont.)HomegroupCopyright © 2015 Pearson Education, Inc.62
Installing and Configuring Home Networks:Configuring Software for Your Home Network (cont.)Computers with various versions of Windows can coexist on same networkConnecting mobile devices to a wireless networkNIC detects available networksCopyright © 2015 Pearson Education, Inc.63
Installing and Configuring Home Networks:Troubleshooting Wireless Network ProblemsMaximum range of 802.11n or 801.11ac is 350 feetDual-band N routerSimultaneous support for both 2.4 GHz and 5 GHz Wireless range extenderCopyright © 2015 Pearson Education, Inc.64
Installing and Configuring Home Networks:Troubleshooting Wireless Network Problems (cont.)Copyright © 2015 Pearson Education, Inc.65
Securing Wireless NetworksSecure computers connected to InternetFirewallWireless networks have special vulnerabilities66Copyright © 2015 Pearson Education, Inc.
Securing Wireless Networks (cont.)HackerPiggybacking67Copyright © 2015 Pearson Education, Inc.
Securing Wireless Networks (cont.)Precautions to secure a wireless networkChange your network name (SSID)Disable SSID broadcastChange the default password on your routerTurn on security protocols 68Copyright © 2015 Pearson Education, Inc.
Securing Wireless Networks (cont.)Precautions to secure a wireless network (cont.)Create a passphraseImplement media access controlLimit your signal rangeApply firmware upgrades 69 Copyright © 2015 Pearson Education, Inc.
Securing Wireless Networks (cont.)70Copyright © 2015 Pearson Education, Inc.
Chapter 7 Summary QuestionsWhat is a network, and what are a network’s advantages and disadvantages?71Copyright © 2015 Pearson Education, Inc.
Chapter 7 Summary QuestionsWhat are the different ways to classify networks?72Copyright © 2015 Pearson Education, Inc.
Chapter 7 Summary QuestionsWhich type of network is most commonly found in the home?73Copyright © 2015 Pearson Education, Inc.
Chapter 7 Summary QuestionsWhat are the main components of every network?74Copyright © 2015 Pearson Education, Inc.
Chapter 7 Summary QuestionsWhat are my options for connecting to the Internet?75Copyright © 2015 Pearson Education, Inc.
Chapter 7 Summary QuestionsHow do I tell if my home network is up to date, and how do I identify the devices on the network?76Copyright © 2015 Pearson Education, Inc.
Chapter 7 Summary QuestionsBesides computers, what other devices can I connect to a home network? 77Copyright © 2015 Pearson Education, Inc.
Chapter 7 Summary QuestionsHow do I configure the software on my computer and set up the devices required to get my network up and running?78Copyright © 2015 Pearson Education, Inc.
Chapter 7 Summary QuestionsWhat problems might I encounter when setting up a wireless network?79Copyright © 2015 Pearson Education, Inc.
Chapter 7 Summary QuestionsWhy are wireless networks more vulnerable to security risks than wired networks, and what special precautions are required to ensure my wireless network is secure?Copyright © 2015 Pearson Education, Inc.80
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