Chapter Data Communication and the Cloud GearUp: “No, I Mean 25 Cents an Hour.” • GearUp’s Web hosting costs rising rapidly • Lucas suggests provisioning Web servers and databases in the cloud • Provision server resources by the hour • Costs: $50/mo plus 25¢ per hour for processing time used Could yield huge savings Copyright â 2014 Pearson Education, Inc Publishing as Prentice Hall 6-2 Study Questions Q1: What is a computer network? Q2: What are the components of a LAN? Q3: What are the fundamental concepts you should know about the Internet? Q4: What processing occurs on a typical Web server? Q5: Why is the cloud the future for most organizations? Q6: How can organizations use the cloud? Q7: 2023? Copyright © 2014 Pearson Education, Inc Publishing as Prentice Hall 6-3 Q1: What Is a Computer Network? Copyright © 2014 Pearson Education, Inc Publishing as Prentice Hall 6-4 Q2: What Are the Components of a LAN? SOHO LAN Copyright © 2014 Pearson Education, Inc Publishing as Prentice Hall 6-5 LAN Protocol • IEEE 802.11 – Wireless LAN – 10/100/1000 Mbps – 802.11n – Up to 600 Mbps – Ethernet – Bluetooth •IEEE 802.3 – Wired LAN Copyright © 2014 Pearson Education, Inc Publishing as Prentice Hall 6-6 Summary of LAN and WAN Networks Copyright © 2014 Pearson Education, Inc Publishing as Prentice Hall 6-7 Connecting to an ISP Important ISP functions: 1.Provide a legitimate Internet address 2.Gateway to the Internet 3.Pay for the Internet by collecting money from customers and paying access fees and other charges to telecom Copyright © 2014 Pearson Education, Inc Publishing as Prentice Hall 6-8 Using MIS InClass 6: A Group Exercise Opening Pandora’s Box • Sonos: leverages technology to provide entertainment • High-quality, wireless LAN audio systems • Uses wired Ethernet to link up to 32 other Sonos devices around home • Each device can play own music or same audio program • Includes a small computer running Linux and a proprietary Sonos protocol Copyright © 2014 Pearson Education, Inc Publishing as Prentice Hall 6-9 Q3: What Are the Fundamental Concepts You Should Know About the Internet? Copyright © 2014 Pearson Education, Inc Publishing as Prentice Hall 6-10 Why Is the Cloud Preferred to In-House Hosting? Copyright © 2014 Pearson Education, Inc Publishing as Prentice Hall 6-28 Why Is the Cloud Preferred to In-House Hosting? (cont’d) Copyright © 2014 Pearson Education, Inc Publishing as Prentice Hall 6-29 Why Now? • Technology now supports construction and use of enormous data centers • Processors, data communication, and data storage are so cheap as to be nearly free • Huge Web farms providing a virtual machine for essentially nothing (1.5Â per hour) Copyright â 2014 Pearson Education, Inc Publishing as Prentice Hall 6-30 When Does the Cloud Not Make Sense? • Law or industry standard practices require physical control over the data • Private cloud – In-house hosting, delivered via Web service standards Copyright © 2014 Pearson Education, Inc Publishing as Prentice Hall 6-31 Q6: How Can Organizations Use the Cloud? Three Fundamental Cloud Types Copyright © 2014 Pearson Education, Inc Publishing as Prentice Hall 6-32 Q7: 2023? • Cloud computing benefit – Individuals on iCloud – Small groups using Office 365 – Startups Using PaaS – Huge organizations using IaaS • New categories of products and services • Create new jobs? • Tele-action – Telediagnosis, telesurgery, telelaw enforcement Copyright © 2014 Pearson Education, Inc Publishing as Prentice Hall 6-33 Ethics Guide: You Said What? About Me??? In Class??? • Packet analyzer a.k.a packet sniffer • Read, record, and display all wireless packets around them • www.wireshark.com • Pickup instant messages, most email, and any http:// Web traffic Copyright © 2014 Pearson Education, Inc Publishing as Prentice Hall 6-34 What Can You Do? • Use https:// • Packet sniffer will know where you went, but won’t obtain data about what you did there • Do not use your computer or mobile device for any unauthorized purpose in class Copyright © 2014 Pearson Education, Inc Publishing as Prentice Hall 6-35 Guide: Thinking Exponentially Is Not Possible, But… Humans think linearly, not exponentially • No one in 1990s could imagine growth in magnetic storage and what we would with it Exponential growth in: • Number of Internet connections • Web pages Amount of data accessible on Internet Copyright â 2014 Pearson Education, Inc Publishing as Prentice Hall 6-36 Linear vs Exponential Growth Copyright © 2014 Pearson Education, Inc Publishing as Prentice Hall 6-37 Guide: Thinking Exponentially Is Not Possible, But…(cont’d) • What can we to better anticipate? • People want to what they’re already doing • Hedging your bets – Position yourself to move quickly as direction becomes clear • Risk: Error increases exponentially as time frame increases Copyright © 2014 Pearson Education, Inc Publishing as Prentice Hall 6-38 Active Review Q1: What is a computer network? Q2: What are the components of a LAN? Q3: What are the fundamental concepts you should know about the Internet? Q4: What processing occurs on a typical Web server? Q5: Why is the cloud the future for most organizations? Q6: How can organizations use the cloud? Q7: 2023? Copyright © 2014 Pearson Education, Inc Publishing as Prentice Hall 6-39 Case Study 6: Turbulent Air in Those Azure Clouds • Microsoft must find a profitable way to put a big part of its business out of business • If Azure successful, Office 365 will replace Windows Server and SQL Server, which is 24% of current revenue Copyright © 2014 Pearson Education, Inc Publishing as Prentice Hall 6-40 Azure Standard Rates Copyright © 2014 Pearson Education, Inc Publishing as Prentice Hall 6-41 6-42 ... 3.Pay for the Internet by collecting money from customers and paying access fees and other charges to telecom Copyright © 2014 Pearson Education, Inc Publishing as Prentice Hall 6-8 Using MIS InClass... data transmission Simple Mail Transfer Protocol (SMTP ) File Transfer Protocol (FTP) Copyright © 2014 Pearson Education, Inc Publishing as Prentice Hall 6-12 TCP and IP Protocols • Transmission... Lucas suggests provisioning Web servers and databases in the cloud • Provision server resources by the hour Costs: $50/mo plus 25Â per hour for processing time used • Could yield huge savings