Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 Teaching and Learning with Technology Networks and the Internet Chapter 7 Teaching and Learning with Technology

ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 Network Collection of computers and peripherals connected together Networked workstations connected to a server via hubs Networking Basics

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 A network Has a server that is a more powerful computers configured to “serve” the workstations attached to it Allows users on the network to communicate Allows sharing of resources and data Networking Basics

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 Every workstation is connected to its server In a wired network, workstations are connected through a hub via cables. In a wireless network, workstations are connected via infrared, microwave, or radio transmission Networking Basics

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 Wired School Networks Typically, networks in schools use a cable similar to telephone wire. The wire is usually run through the ceiling A single wire for each workstation is then dropped down inside the walls. Networking Basics

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 Wireless School Networks Transmit via infrared, radio wave, or microwave Saves cost on retrofitting schools May require line-of-sight transmission Offer flexible networked instructional environment Networking Basics

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 Types of Networks include: Local Area Networks (LANs) Serve a local area such as a single school Wide Area Networks (WANs) Serve a wider area such as a school district WANs typically include multiple LANs Networking Basics

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 Networking Basics Network Challenges The protocol must be the same across networks Bandwidth must have sufficient carrying capacity

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 Networking Basics Network Challenges Networks must provide sufficient security and privacy

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 Network Advantages Programs installed on the server can be used by all workstations Programs on servers are easier to install and maintain Require less hard drive space on individual workstations May be more economically purchased with site licenses Networking Basics

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 Data Sharing Users typically allocated hard drive space on the server Server drive space lets users log into any workstation at any location and still have access to their files Data can be placed in public areas of the server Networking Basics

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 Administrative Network Tools Administrative groupware offers common administrative programs Academic Network Tools Lets teachers monitor, control, and share images on all workstations Networking Basics

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 Hardware Sharing Allows sharing of printers, scanners, etc. among multiple workstations Saves on cost of multiple peripherals Allows monitoring of and access to costly peripherals Networking Basics

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 Communications , a software program, included in most networked environments Networking Basics

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 Communications Allows users on a network to send and receive electronic messages offers asynchronous communication between students, teachers, and parents Networking Basics

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 Telecommunications Electronic communications between computers via phone lines Telecommunications

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 Telecommunications Offers an alternative to a direct network connection Modems needed to convert signals from digital to analog Modems must be located on both the sending and receiving computer Telecommunications

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 Modems Vary in terms of speed of transmission May be internal or external relative to the computer Require telecommunications software Networks may include multiple modems to allows connections from home computers Telecommunications

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 Connecting to a Network Once modems connect, a login and password are needed Modems may not be as fast as a workstation since phone lines have small bandwidth –ISDN and DSL lines are higher bandwidth and makes access faster –Cable modems also offer a faster alternative to phone lines Telecommunications

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 A collection of interconnected individual networks Uses a common protocol, TCP/IP Not owned or operated by any one entity Regulated by the Internet Society The Internet

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 Internet Service Providers (ISPs) Provide home users temporary connections to the Internet The ISP’s network is connected to the Internet Home users pay for a login to access the ISP network Some ISPs offer services beyond just access such as shopping, news, , etc The Internet

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon on the Internet works like network You can send and receive mail from beyond your own WAN addresses differ from URLs Use a combination of login name at network name, for example Internet Communications

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 Conferences Electronic bulletin boards or forums allow users to read messages from others Can post messages for others to read One-to-many communication May be public or private Discussions are usually threaded - A single line of conversation can be followed through all responses Internet Communications

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 Mailing Lists (Listservs) Electronic automated mailing lists that delivers messages to all subscribers May have a moderator to manage and approve mail messages before sending to all subscribers Conferences must be visited to use them while listserv messages appear in the subscriber’s box Internet Communications

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 Chats Real-time conversations via the Internet Communication may be via typing or voice May include still or video images Chat rooms (virtual chat space) may be public or private Require prior appointments since chats are synchronous Internet Communications

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 Telephony Voice conversations via the Internet Uses computer speaker and microphone as a telephone handset Telephony software dials and sets up communication among users Local calls to ISPs may enable long distance connections Internet Communications

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 Videoconferencing Audio and video conversations via the Internet Uses monitor-top video cameras along with computer speaker and microphone Provides for real-time live video interaction among users Classrooms around the world can be connected via compressed video. Internet Communications

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 File Transfer Protocol (FTP) Software that allows users to upload (send files to the Internet) and download (receive files from the Internet) FTP Sites are virtual libraries of downloadable files Files are usually compressed (zipped) for faster transmission Compressed files must be unzipped before using Other Internet Services

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 Usenet Newsgroups are conferences dedicated to particular topics Usenet is the collection of on-going newsgroups Newsreader programs are built into most Internet software Other Internet Services

Teaching and Learning with Technology ck to edit Master title style  Allyn and Bacon 2002 Teaching and Learning with Technology k to edit Master title style  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2005 The world knowledge base is now available in any classroom that can connect to the Internet The Internet makes global communication for learning possible Students and teachers can participate in virtual learning communities across nations Teaching and the Internet