Technology in Action Chapter 7 PDF

Technology in Action Eighteenth Edition Chapter 7 Networking: Connecting Computing Devices Copyright © 2024, 2022,...

Technology in Action Eighteenth Edition Chapter 7 Networking: Connecting Computing Devices Copyright © 2024, 2022, 2020 Pearson Education, Inc. All Rights Reserved Learning Objectives (1 of 2) 7.1 Describe computer networks and their pros and cons. 7.2 Explain the different ways networks are defined. 7.3 Describe the types of transmission media used in networks. 7.4 Describe the basic hardware devices necessary for networks. 7.5 Describe the type of software necessary for networks. 7.6 Summarize the broadband options available to access the Internet. Copyright © 2024, 2022, 2020 Pearson Education, Inc. All Rights Reserved Learning Objectives (2 of 2) 7.7 Summarize how to access the Internet wirelessly. 7.8 Explain what should be considered when evaluating a home network. 7.9 Describe how a home network is set up. 7.10 Describe the potential problems with wireless networks and the means to avoid them. 7.11 Describe how to secure wireless home networks. Copyright © 2024, 2022, 2020 Pearson Education, Inc. All Rights Reserved Networking Fundamentals (1 of 3) Understanding Networks (Objective 7.1) Computer network Node – Computer – Peripheral – Network device Copyright © 2024, 2022, 2020 Pearson Education, Inc. All Rights Reserved Networking Fundamentals (2 of 3) Understanding Networks (Objective 7.1) Benefits of networks – Sharing a high-speed Internet connection – Sharing printers and peripheral devices – Sharing files – Common communications Disadvantage of networks – Setup and administration Copyright © 2024, 2022, 2020 Pearson Education, Inc. All Rights Reserved Networking Fundamentals (3 of 3) Understanding Networks (Objective 7.1) How data moves through networks – Data transfer rate (bandwidth) is the maximum speed data can be transmitted – Throughput is the actual speed data is transferred – Measured in megabits per second (Mbps) or gigabits per second (Gbps) Copyright © 2024, 2022, 2020 Pearson Education, Inc. All Rights Reserved Network Architectures (1 of 4) Network Designs (Objective 7.2) Networks can be classified by distance – Personal area network – Local area network – Home area network – Metropolitan area network – Wide area network Copyright © 2024, 2022, 2020 Pearson Education, Inc. All Rights Reserved Network Architectures (2 of 4) Network Designs (Objective 7.2) Networks can be classified by levels of administration – Client/server network – Peer-to-peer network Copyright © 2024, 2022, 2020 Pearson Education, Inc. All Rights Reserved Network Architectures (3 of 4) Network Designs (Objective 7.2) Classifying networks by protocols – Ethernet ▪ Developed by the Institute of Electrical and Electronics Engineers ▪ Wired networks (gigabit Ethernet [GbE]) – Backward compatibility Copyright © 2024, 2022, 2020 Pearson Education, Inc. All Rights Reserved Network Architectures (4 of 4) Network Designs (Objective 7.2) Classifying networks by protocols – Wireless networks (Wi-Fi) ▪ Wi-Fi 6 ▪ WiGig Wi-Fi Name Wi-Fi 1 Wi-Fi 2 Wi-Fi 3 Wi-Fi 4 Wi-Fi 5 Wi-Fi 6 IEEE Standard 802.11a 802.11b 802.11g 802.11n 802.11ac 802.11ax Frequency 5 GHz 2.4 GHz 2.4 GHz 2.4 GHz 2.4 GHz & 2.4 GHz & 5 & 5 GHz 5 GHz GHz, & 6 GHz Maximum Data Rate 54 Mbps 11 Mbps 54 Mbps 600 Mbps 1.3 Gbps 10-12Gbps Copyright © 2024, 2022, 2020 Pearson Education, Inc. All Rights Reserved Network Components (Objective 7.3) Copyright © 2024, 2022, 2020 Pearson Education, Inc. All Rights Reserved Network Components (1 of 2) Transmission Media (Objective 7.3) Transmission media establish a communications channel between the nodes on a network – Wireless networks – Wired networks Copyright © 2024, 2022, 2020 Pearson Education, Inc. All Rights Reserved Network Components (2 of 2) Transmission Media (Objective 7.3) Wired – UTP cable: twisted copper wires surrounded by a plastic jacket – Coaxial cable: single copper wire surrounded by layers of plastic – Fiber-optic cable: plastic or glass fibers Copyright © 2024, 2022, 2020 Pearson Education, Inc. All Rights Reserved Network Components Basic Network Hardware (Objective 7.4) Network adapter Network interface card (NIC) Modem Router Switch Copyright © 2024, 2022, 2020 Pearson Education, Inc. All Rights Reserved Network Components Network Software (Objective 7.5) Operating system for P2P networking Client/server network – Communicate through centralized server – Specialized network operating system (NOS) software Copyright © 2024, 2022, 2020 Pearson Education, Inc. All Rights Reserved Connecting to the Internet (1 of 2) Broadband Internet Connections (Objective 7.6) Home network – Share an Internet connection Must purchase Internet access from ISP – Specialized providers – Companies that provide other services Cellular or dial-up Copyright © 2024, 2022, 2020 Pearson Education, Inc. All Rights Reserved Connecting to the Internet (2 of 2) Broadband Internet Connections (Objective 7.6) Broadband – Cable Internet – D S L (digital subscriber line) – Fiber-optic service – Satellite Internet Broadband Type Transmission Medium Speed Considerations Average and Maximum Download Speeds Fiber-optic Strands of optically pure Transmits data by light signals, Average speed of 250 Mbps, glass or plastic which do not degrade over long with maximum of 1,200 Mbps distances Cable Coaxial cable, similar to Cable connections are shared, so Average speed of 10 Mbps, cable TV wire speed can drop during high-usage with maximum of 500 Mbps periods DSL (digital Copper wire phone line Speed drops as distance from the Average speed of 5 Mbps, subscriber line) main signal source increases with maximum of 35 Mbps Satellite Wireless signals from Speed depends on clear line of Average speed of 500 Kbps, orbiting satellites sight between receiving satellite with maximum of 100 Mbps dish and orbiting satellite; weather can also disrupt of affect service Copyright © 2024, 2022, 2020 Pearson Education, Inc. All Rights Reserved Connecting to the Internet Wireless Internet Access (Objective 7.7) Mobile broadband – Wireless Internet at home – Mobile hotspot – Wireless ISP – Data plan Copyright © 2024, 2022, 2020 Pearson Education, Inc. All Rights Reserved Evaluating Home Networks Evaluating Your Home Network (Objective 7.8) List all the devices you are using Use the latest standard Use the newest equipment Copyright © 2024, 2022, 2020 Pearson Education, Inc. All Rights Reserved Installing and Configuring Home Networks Devices on a Home Network (Objective 7.9) Number of wired devices on a network Number of wireless devices on a network Copyright © 2024, 2022, 2020 Pearson Education, Inc. All Rights Reserved Installing and Configuring Home Networks Storage Devices for Your Home Network (Objective 7.9) Specialized home networking devices – NAS devices – Home network servers: Authenticate and authorize network users and computers Provide file storage, sharing, and collaboration tools Share applications between connected computers Copyright © 2024, 2022, 2020 Pearson Education, Inc. All Rights Reserved Installing and Configuring Home Networks Troubleshooting Wireless Network Problems (Objective 7.10) Maximum Wi-Fi range is about 350 feet Walls, floors, and large metal objects interfere with wireless signals Place an access point where the Wi-Fi signal becomes weaker A wireless range extender repeats or amplifies wireless router signal Copyright © 2024, 2022, 2020 Pearson Education, Inc. All Rights Reserved Managing and Securing Wireless Networks (1 of 3) Securing Wireless Networks (Objective 7.11) Piggybacking Methods for securing a wireless network: – Use encryption and security protocols – Change network name (SSID) – Disable SSID broadcast – Change the default password – Create a passphrase Copyright © 2024, 2022, 2020 Pearson Education, Inc. All Rights Reserved Managing and Securing Wireless Networks (2 of 3) Securing Wireless Networks (Objective 7.11) Additional methods for securing a wireless network: – Limit signal range – Keep router firmware up to date – Disable remote access Copyright © 2024, 2022, 2020 Pearson Education, Inc. All Rights Reserved Managing and Securing Wireless Networks (3 of 3) Securing Wireless Networks (Objective 7.11) Copyright © 2024, 2022, 2020 Pearson Education, Inc. All Rights Reserved Copyright This work is protected by United States copyright laws and is provided solely for the use of instructors in teaching their courses and assessing student learning. Dissemination or sale of any part of this work (including on the World Wide Web) will destroy the integrity of the work and is not permitted. The work and materials from it should never be made available to students except by instructors using the accompanying text in their classes. All recipients of this work are expected to abide by these restrictions and to honor the intended pedagogical purposes and the needs of other instructors who rely on these materials. Copyright © 2024, 2022, 2020 Pearson Education, Inc. All Rights Reserved