Lesson 5- Networks

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Author:
Mingming
ID:
280449
Filename:
Lesson 5- Networks
Updated:
2014-08-10 03:52:33
Tags:
Networks
Folders:
IT
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  1. the technology associated with the electronic transmission of void, fax or other information between distant parties
    telephony
  2. a group of two or more computers linked together
    network
  3. Process of sending and receiving data or information
    communication
  4. transmission of data from one location to another
    data communication
  5. Process in which one computer sends or transfer data, instructions and information to another computer
    Computer communication
  6. Types of Interchange
    • Synchronous
    • Asynchronous
  7. Process of transmitting and receiving of voice, video or data in a form that could be sent and / or received by different communication devices over a long distance channel
    telecommunication
  8. Communication Channel Used in Transmitting Signals
    Telecommunication
  9. used to TRANSMIT data, instructions or information to other devices connected in a network
    terminal
  10. Used to convert data, instructions or information into a form that could be TRANSMITTED through a channel
    Communication Device
  11. used as a MEDIA or path on which signals travel to different devices connected to the network
    Communication channels
  12. used to convert data, instructions or information into a form that could be RECEIVED by the receiving devices
    Communication device
  13. computers accept the transmitted data, instructions or information from different transmitting communication devices
    Receiving devices or Host
  14. Network advantages
    • Facilitating communication
    • sharing of Hardware
    • Software and Data and information
    • Collaborative environment
  15. Network Disadvantages
    • Malicious code
    • Network faults
    • Setup management costs
  16. Network types
    • LAN
    • WAN
    • MAN
    • CAN
    • HAN
  17. Network architectures
    • Client/ Server networks
    • Peer-to-peer networks
    • internet Peer-to-peer
  18. Types of hardware capable of sending data, instruction or information between transmitting and receiving devices
    communication devices
  19. convert analog signals to digital and vice-versa.
    Modem – modulate – demodulate
  20. Enables data transmission over analog telephone lines
    Dial – up modem
  21. allow digital transmission over telephone copper wires
    DSL and ISDN modem
  22. DSL
    digital subscriber line
  23. ISDN
    integrated services digital network
  24. Uses coaxial cable to send and receive data
    Cable modem
  25. Many mobile devices, such as a PDA, contain a wireless modem
    Wireless modem
  26. Each computer on a network must have
    Network interface card (nic)
  27. Software and hardware linking two different types of networks that use different protocols
    Gateway
  28. An intelligent device that directs network traffic
    Router
  29. Connects wireless communications devices together to create a wireless network
    Wireless Access Point (WAP)
  30. A place of convergence where data arrives from one or more directions and is forwarded in one or more other directions
    Hub
  31. Used to transfer data from one computer to another requires some type of link through which the data can be transmitted
    Communication Media
  32. the link that allows data be transferred from one computer to another
    communication channel
  33. the transmission capacity of a communication channel
    Bandwidth
  34. with high bandwidth media such as cable, fiber, DSL
    Broadband
  35. using standard telephone line
    baseband
  36. moved or switched from one wire or frequency to another
    Transmission
  37. a device located at the telephone company’s central office that established a link between a sender and receiver of data communications
    Switch
  38. Made up of different materials or technique capable of carrying one or more signals transmitted from one device to another
    Transmission Media
  39. Types of transmission media
    • Physical transmission media
    • Wireless transmission media
  40. Physical transmission cable
    • Twister Pair Cable
    • Coaxial Cable
    • Fiber Optic Cable
  41. Wireless Transmission Media
    • Microwave
    • Communication Satellite
    • IrDA – Infrared Transmission
    • Bluetooth
    • WI-FI
    • WAP
  42. the geometric arrangement of how a network is set up and connected
    Network topologies
  43. Types of Network Topologies
    • Bus topology
    • Ring topology
    • Star topology
  44. Set of rules and procedures from transmitting data between two or more devices
    Communication Protocols
  45. Provide features such as administration, file management, print, communications, security, database, management, etc.
    NETWORK OPERATING SYSTEMS SOFTWARE

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