tia12e_ch07 copy.pptx
Transcript
Technology in Action Alan Evans • Kendall Martin Mary Anne Poatsy Twelfth Edition Global Edition Technology in Action Chapter 7 Networking: Connecting Computing Devices How Networks Function • Networking Fundamentals • Network Architectures and Components • Connecting to the Internet Copyright...
Technology in Action Alan Evans • Kendall Martin Mary Anne Poatsy Twelfth Edition Global Edition Technology in Action Chapter 7 Networking: Connecting Computing Devices How Networks Function • Networking Fundamentals • Network Architectures and Components • Connecting to the Internet Copyright © 2016 Pearson Education, Ltd. 7-3 Networking Fundamentals Objective 1. What is a network, and what are a network’s advantages and disadvantages? Copyright © 2016 Pearson Education, Ltd. 7-4 Network Architectures and Components Objectives 2. What are the different ways to classify networks? 3. Which type of network is most commonly found in the home? 4. What are the main components of every network? Copyright © 2016 Pearson Education, Ltd. 7-5 Connecting to the Internet Objective 5. What are my options for connecting to the Internet? Copyright © 2016 Pearson Education, Ltd. 7-6 Networking Fundamentals • Computer network • Node Computer Peripheral Network device Copyright © 2016 Pearson Education, Ltd. 7-7 Networking Fundamentals • Computer network resource sharing benefits: High-speed Internet connection Peripheral devices Files Common communications Copyright © 2016 Pearson Education, Ltd. 7-8 Network Architectures • Classified by: Distance How managed Rules to exchange data Communications medium used Copyright © 2016 Pearson Education, Ltd. 7-9 Network Components Copyright © 2016 Pearson Education, Ltd. 7-10 Network Components Transmission Media • Communications channel between nodes Wireless networks Wired networks Copyright © 2016 Pearson Education, Ltd. 7-11 Network Components Transmission Media • UTP cable • Types of UTP cable Cat 5E Cat 6 Cat 6a • Decreased throughput in wireless networks Copyright © 2016 Pearson Education, Ltd. 7-12 Network Components Basic Network Hardware • Network adapter • Network interface card (NIC) • Broadband modem • Packets • Router • Switch Copyright © 2016 Pearson Education, Ltd. 7-13 Network Components Network Software • Operating software for P2P networking • Client/server network Communicate through centralized server Specialized network operating system (NOS) software Copyright © 2016 Pearson Education, Ltd. 7-14 Connecting to the Internet • Home network Share an Internet connection • Must purchase Internet access from ISP Specialized providers Companies that provide other services • Broadband • Dial-up Copyright © 2016 Pearson Education, Ltd. 7-15 Connecting to the Internet Broadband Internet Connections • Broadband • Standard broadband technologies • Satellite broadband • Mobile broadband Copyright © 2016 Pearson Education, Ltd. 7-16 Connecting to the Internet Wired Broadband Internet Connections • Cable Internet • DSL (digital subscriber line) • Fiber optic service Copyright © 2016 Pearson Education, Ltd. 7-17 Connecting to the Internet Wireless Internet Access • Wireless Internet at home • WiFi hotspot • Wireless in-flight Internet • Mobile Broadband 3G • 4G LTE Copyright © 2016 Pearson Education, Ltd. 7-18 Your Home Network • Installing and Configuring Home Networks • Securing Wireless Networks Copyright © 2016 Pearson Education, Ltd. 7-19 Installing and Configuring Home Networks Objectives 6. How do I tell if my home network is up to date, and how do I identify the devices on the network? 7. Besides computers, what other devices can I connect to a home network? 8. How do I configure the software on my computer and set up other devices to get my network up and running? 9. What problems might I encounter when setting up a wireless network? Copyright © 2016 Pearson Education, Ltd. 7-20 Securing Wireless Networks Objective 10.Why 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 © 2016 Pearson Education, Ltd. 7-21 Installing and Configuring Home Networks • Devices connecting to home networks Smartphones Gaming consoles Tablets Smart TVs Computers Printers Copyright © 2016 Pearson Education, Ltd. 7-22 Installing and Configuring Home Networks Connecting Devices to a Router • Routers for Windows computers 802.11n 802.11ac • Routers for Apple computers AirPort Extreme router AirPort Express Copyright © 2016 Pearson Education, Ltd. 7-23 Installing and Configuring Home Networks Network-Attached Storage Devices • NAS devices • AirPort Time Capsule Copyright © 2016 Pearson Education, Ltd. 7-24 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 cameras Copyright © 2016 Pearson Education, Ltd. 7-25 Installing and Configuring Home Networks Troubleshooting Wireless Network Problems • 802.11n or 801.11ac added performance options: Dual-band N router Wireless range extender Copyright © 2016 Pearson Education, Ltd. 7-26 Securing Wireless Networks • Use a firewall to secure Internet connections • Wired networks more secure than wireless • Added vulnerabilities for wireless: Signal range can extend to neighbors Extra precautions required to secure wireless Copyright © 2016 Pearson Education, Ltd. 7-27 Check Your Understanding 1. What is a network, and what are a network’s advantages and disadvantages? 2. What are the different ways to classify networks? 3. Which type of network is most commonly found in the home? 4. What are the main components of every network? 5. What are my options for connecting to the Internet? Copyright © 2016 Pearson Education, Ltd. 7-28 Check Your Understanding 6. How do I tell if my home network is up to date, and how do I identify the devices on the network? 7. Besides computers, what other devices can I connect to a home network? 8. How do I configure the software on my computer and set up the devices required to get my network up and running? Copyright © 2016 Pearson Education, Ltd. 7-29 Check Your Understanding 9. What problems might I encounter when setting up a wireless network? 10.Why 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 © 2016 Pearson Education, Ltd. 7-30 All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher. Copyright © 2016 Pearson Education, Ltd.
