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41 Cards in this Set
- Front
- Back
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NIC
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Network Interface Card
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NOS
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Network Operating System
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Computer Network
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1. Network Interface Card
2. Network Operating System 3. Dedicated server computer 4. Hubs 5. Routers |
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Key Digital Network Technologies
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1. Client/Server Computing
2. Packet Switching 3. TCP/IP & connectivity |
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Client/Server
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A distributed processing model in which some processing power is located within small, inexpensive client computers
-clients linked to one another |
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Packet Switching
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- messages first broken down into small bundles of data called packets
-packets are sent along different communication paths as paths become available - packets are reassembled once they reach their destination |
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Connectivity
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Ability of computers & computer-based devices to communicate & share information
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Protocol
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Set of rules & procedures governing transmission of information in a network
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Digital
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discrete, binary waveform
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Analog
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continuous waveform, typically used for voice
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Modem
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converts from digital to analog
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Types of Networks
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LAN
CAN MAN WAN |
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Physical Transmission Media
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-twisted wire
-coaxial cable -fibre optic & optical networks -wireless transmission media & devices -transmission speed |
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What is the Internet?
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links hundreds of thousands of individual networks all over the world (network of networks)
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ISP
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Internet Service Provider
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DSL
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Digital Subscriber Line
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DNS
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Domain Name System
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IP Address
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32 bit numeric address
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IPv6
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128 bit address
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Internet 2
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consortia of agencies working to provide a new robust & high- bandwidth version of the internet
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E-mail
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person to person messaging, document sharing
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Usenet Newsgroups
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discussion groups o electronic bulletin boards
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Chatting & Instant Messaging
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Interactive conversations
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VoIP
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Voice over Internet Protocol
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Voice over Internet Protocol
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delivers voice in digital form over the internet
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Unified Communications
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integrates all communications into one stream to allow user to switch back and forth
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Intranet
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an integral organizational network that provides access to data across the enterprise
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Extranet
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authorized visitors are given limited access to an internal intranet
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Wireless Computer Networks
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-bluetooth
-wifi -wimax -broadband cellular wireless & energizing wireless services |
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RFID
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Radio Frequency Identification
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Radio Frequency Identification
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-use tiny tags with embedded microchips containing data about an item & location & an antenna
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HTTP
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Hypertext Transfer Protocol
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Hypertext Transfer Protocol
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Communication standard used for transferring web pages
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URL
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Uniform Resource Locators
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Uniform Resource Locators
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Addresses of Web Pages
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Web Servers
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software for locating & managing Web pages
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Search Engines
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major source of Interned advertising revenue via search engine marketing, using complex algorithms & page ranking techniques to locate results
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Shopping Bots
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use intelligent agent software fore searching Internet for shopping information
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Web 2.0
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blogs
wikis rss mashups social software |
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Web 3.0
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semantic web
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Wireless Sensor Networks
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networks of hundresds or thousands of interconnected wireless devices embedded into physical environment to provide measurements of many points over large spaces
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