Understanding Wired and Wireless Networks Lesson 3

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Understanding Wired and Wireless Networks Lesson 3
2014-02-22 07:51:15

Understanding Wired and Wireless Networks Lesson 3
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  1. is the cable most commonly used in local area networks.
    Twisted-pair cable
  2. are the most common of all copper-based cables
    Twisted-pair cables
  3. This is the most common type of patch cable, and it is the type thatyou would use to connect a computer to a central connecting device like a switch.
    straight through cable
  4. This type is used to connect like devices to each other, for example, a computerto another computer, or a switch to another switch.
    crossover cable
  5. MDI
    medium dependent interface
  6. which tests all of the pins of a connection one by one
    continuity tester
  7. is anything that disrupts or modifies a signal that is traveling along a wire.
  8. This is a disturbance that can affect electrical circuits, devices, and cables due to electromagnetic conduction and possibly radiation.
    Electromagnetic interference (EMI)
  9. This is interference that can come from AM/FM transmissions and cell phone towers.
    Radio frequency interference (RFI)
  10. is when the signal that is transmitted on one copper wire or pair of wires creates an undesired effect on another wire or pair of wires.
  11. transmits light (photons) instead of electricity, and this light is transmitted over glass or plastic.
    Fiber optic cable
  12. is a cable with an optical fiber that is meant to carry a single ray of light—one ray of light, one mode.
    Single-mode (SM) optic
  13. is a cable with a larger fiber core, capable of carrying multiple rays of light.
    Multi-mode (MM) optic
  14. This devicequite often also acts as a router, firewall, and IP proxy.
    wireless access point (WAP)
  15. allow for connectivity between a desktop computer or laptop and the wireless access point.
    Wireless network adapters
  16. is similar to a wireless repeater, but the bridge can connect different 802.11 standards together; this is known as bridge mode.
    wireless bridge
  17. is a network composed of at least one WAP and at least one computeror handheld device that can connect to the WAP.
    wireless LAN (WLAN)
  18. This means that wireless devices can have more antennas, up to four maximum.
    Multiple-Input Multiple-Output (MIMO)
  19. This is the sending of two or more frames of data in a single transmission.
    Frame aggregation
  20. Here, two channels that do not overlap are used together in an effort to double the physical data rate (PHY).
    Channel bonding
  21. is more common. It occurs when wireless clients connect to and are authenticated by a wireless access point, which can be expanded by creating a wireless distribution system—a group of WAPs interconnected wirelessly.
    Infrastructure mode
  22. is less common, and it is used more often in a handheld computer environment. (also referred to as peer-to-peer or P2P) networks occur when all of the clients communicate directly with each other.
    Ad-hoc mode