237-L06-2up - BUS 237 Information Systems in Business...

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BUS 237 1 Lecture 6: Networks and Collaboration BUS 237 Information Systems in Business BUS 237 Agenda Questions? Assignment #1 MyMISLab Training and Tests Midterm Exam Introduction to telecommunications and computer networks Definitions Local Area Network (LAN) Wide Area Network (WAN) Internet BUS 237 2
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BUS 237 2 Midterm Exam Closed book no calculators, translators, PDAs, cell phones, etc. 60 multiple choice questions sample format on WebCT Week 7 Covers Chapters 1-6 textbook and all lecture material Bring the following: your SFU ID or picture ID (required) pencil (to fill in answer sheet) and eraser Questions? BUS 237 3 This Could Happen to You A manager needs to decide where she will run the blog It needs to be private to maintain a competitive advantage Sales people need to have easy access Passwords may be needed to restrict access The company has a private network Protected by firewall Employees access through VPN can be protected from unauthorized access sales people can access with same password they already use What should she do? BUS 237 4
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BUS 237 3 Learning Objectives BUS 237 5 Q1. Why should I care about networks? Q2. What is a computer network? Q3. What are the components of a LAN? Q4. What do I need to know about connecting to the Internet? 5. How does email actually work? Q6. What are firewalls, encryption, and VPNs? Q7. Why is my phone getting smarter? Q8. How does a search engine work? Definitions: Telecommunications BUS 237 6 The electronic transfer of data is called Telecommunications The transfer can occur between people or machines
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BUS 237 4 Definitions: Telecommunications BUS 237 7 Two or more people talking on a telephone is Telecommunication Definitions: Telecommunications BUS 237 8 Or. .. two people using computers to send data to each other is Telecommunication
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BUS 237 5 Definitions: Telecommunications BUS 237 9 Or. .. two machines sending information to each other is also Telecommunication Definitions: Transmission Media BUS 237 10 The transfer of electronic data occurs through a Transmission Media
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BUS 237 6 Definitions: Transmission Media BUS 237 11 There are two types of transmission media: Wireline & Wireless Definitions: Transmission Media Wireline Twisted-pair copper (telephone wire) Coaxial cable (cable television) Fiber-optic cable Wireless Infrared light Cellular telephone (analog or digital) Microwave Satellite (geostationary or low-earth) BUS 237 12
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BUS 237 7 Definitions: Transmission Media The amount of electronic data that can be transferred using transmission media is called bandwidth Bandwidth is measured in bits per second such as Kbps , Mbps , Gbps Definitions: Analog and Digital BUS 237 14 Analog continuously varying frequency smooth but inaccurate Digital series of bits (high voltage = 1, low voltage = 0) accurate and choppy There are two basic ways to send data
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237-L06-2up - BUS 237 Information Systems in Business...

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