Chapter 7 Networking Connecting Computing Devices PDF

Chapter 7 Networking: Connecting Computing Devices Networking Fundamentals: 1. Computer network: two or more computers that are connected to communicate 2. Node: each device connected to a network ○ Computer ○ Peripheral: printer, game console ○ Network device: ro...

Chapter 7 Networking: Connecting Computing Devices Networking Fundamentals: 1. Computer network: two or more computers that are connected to communicate 2. Node: each device connected to a network ○ Computer ○ Peripheral: printer, game console ○ Network device: router Computer network resource sharing benefits: (benefits to having computers networked) High-speed internet connection Peripheral devices Files Common communication Network Architectures are classified according to the following characteristics: Distance How managed Rules to exchange data Communications medium used WAN Wide area network MAN Metropolitan area network LAN Local area network HAN Home area network PAN Personal area network Network Components: Means of connecting the nodes on the network: cable, wireless technology Special hardware devices that allow the nodes to communicate with each other and to send data Software that allow the network to run Types of Network Components: 1. Transmission media 2. Basic Network Hardware 3. Network Software Network Components: Transmission media Communication channel between nodes ○ Wireless networks ○ Wired networks UTP cables Types of UTP cable ○ Cat 5E ○ Cat 6 ○ Cat 6a Decreased throughput in wireless network Network components: Basic Network Hardware Network adapter Network Interface Card (NIC) Broadband modem Packets Router Switch  Each node needs Network adapter Network interface card An integrated network adapter A broadband connection requires A modem Modem translates the signal into digital and back again Packets Data is sent in bundles Network navigation devices Facilitate and control the flow of data Router transfers packets of data between two or more networks Network components: Network Software Operating software for P2P networking Client/server network ○ Communication through centralized server ○ Specialized network operating system (NOS) software Home networks Need operating system software that supports P2P networking Servers on client/server networks Have specialized network operating system (NOS) software installed Connecting to the internet: Home network ○ share an internet connection Must purchase Internet access from ISP (internet service providers): ○ Specialized providers ○ Companies that provide other services Broadband Dial-Up Connecting to the internet: Broadband Internet connections Broadband Standard broadband technologies Satellite broadband Mobile Broadband High-Speed Internet Broadband Standard wired broadband technologies Cable, DSL, and fiber optic service Satellite broadband Used mostly in rural or mountain areas Mobile broadband Connects you to the internet through the same cellular network that cell phones use Connecting to the internet: Wired Broadband Internet Connection Cable Internet DSL (digital subscriber line) Fiber optic service Cable internet Transmits data over the coaxial cables DSL Uses twisted-pair cable, same as the ones used for regular telephones.to connect your computer to the internet Fiber optic service Uses fiber optic lines, it can transmit an enormous amount of data at superfast speeds Connecting to the Internet: Wireless Internet Access Wireless Internet at home Wi-Fi hotspot Wireless in-flight internet Mobile Broadband 3G 4G LTE Installing and Configuring: Home Networks Devices connecting to home networks ○ Smartphones ○ Gaming consoles ○ Tablets ○ Smart TVs ○ Computer ○ Printers Installing and Configuring Home Networks: Connecting Devices to router Routers for windows computers ○ 802.11nn ○ 802.11ac Routers for Apple computers ○ Airport extreme router ○ Airport expresses Installing and Configuring Home Networks: Network-Attached Storage Devices NAS devices AirPort Time Capsule Network-Attached storage (NAS) Designed to store and manage network data Installing and Configuring Home Networks: Specialized Home-Networking Devices New digital picture frames ○ Built in wireless ○ Access network and online photos ○ Receive pictures via e-mail Security ○ Wireless monitoring camera Installing and Configuring Home Networks: Troubleshooting Wireless Network Problems 802.11n or 801.11ac added performance options: ○ Dual-band N router ○ Wireless range extender Dual-band N router Allows for simultaneous support for both 2.4-GHz and 5-GHz frequency bands for 802.11n and all prior 802.11 standards Wireless range extender A device that amplifies your wireless signal to extend to parts of your home that are experiencing poor connectivity Securing wireless networks: Use a firewall to secure Internet connections Wired network more secure than wireless Added vulnerabilities for wireless: ○ Signal range can extend to neighbors ○ Extra precaution required to secure wireless Firewall A hardware or software solution that shields your network