University:
Southern New Hampshire University
Course:
CYB210 | Computer Networking
Academic year:

2022
Views:

215

Pages:

4
Author:

Accinkiquicpqw

Chapter 1 Introduction A note on the use of these PowerPoint slides: We’re making these slides freely available to all (faculty, students, readers). They’re in PowerPoint form so you see the animations; and can add, modify, and delete slides (including this one) and slide content to suit your needs. They obviously represent a lot of work on our part. In return for use, we only ask the following: § § If you use these slides (e.g., in a class) that you mention their source (after all, we’d like people to use our book!) If you post any slides on a www site, that you note that they are adapted from (or perhaps identical to) our slides, and note our copyright of this material. For a revision history, see the slide note for this page. Chapter 1: introduction Chapter goal: Overview/roadmap: § Get “feel,” “big picture,” introduction to terminology • more depth, detail later in course § What is the Internet? What is a protocol? § Network edge: hosts, access network, physical media § Network core: packet/circuit switching, internet structure § Performance: loss, delay, throughput § Protocol layers, service models § Security § History The Internet: a “nuts and bolts” view Billions of connected computing devices: mobile network national or global ISP § hosts = end systems § running network apps at Internet’s “edge” Packet switches: forward packets (chunks of data) local or regional ISP Internet § routers, switches Communication links home network § fiber, copper, radio, satellite § transmission rate: bandwidth Networks § collection of devices, routers, links: managed by an organization enterprise network content provider network datacenter network “Fun” Internet-connected devices Tweet-a-watt: monitor energy use bikes Pacemaker & Monitor Amazon Echo IP picture frame Web-enabled toaster + weather forecaster Internet refrigerator Security Camera cars Slingbox: remote control cable TV AR devices scooters sensorized, bed mattress Internet phones Gaming devices Others? Fitbit