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28 Cards in this Set
- Front
- Back
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Define the internet.
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A set of subnets connected to routers.
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What is a communication network that serves users within a confined geographical area?
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A LAN.
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Local or state authorities may regulate what type of network?
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A Metropolitan Area Network.
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What type of network provides services for 2 to 10 users?
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Peer to peer.
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How many users does a single server network normally service?
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10 to 50.
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What type of network service 1000 or more users?
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Enterprise network.
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Name three types of media used today for networking?
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Twisted pair, coax, and fiber optic.
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What do we call noise arising from signals on other wires in the cable or other cables?
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EMI.
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What is the term for a measurement of data transferred through the medium between network connections?
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Throughput.
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What form of communication is used when information is transmitted in groups or blocks of data?
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sychrounous.
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Define the three types of communication modes.
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Simplex-A one way transmission.
Half duplex-transmission is in one direction at a time. Full duplex-transmission happens both directions simultaneously. |
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What are the two most common guages of cabling used for network purposes?
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22 guage and 24 guage.
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What defines 1 Gbps data transfer over distances up to 100 meters using four pairs of CAT-5 balanced copper cabling?
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1000BaseT
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What type of network uses a laser or light emmitting diode to send a signal through the core portion of the cable?
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Fiber optic.
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In a fiber optic cable, what is the principle that keeps light trapped in the core and allows it to bend around curves in the fiber?
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Total internal reflection.
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What can patterns of light transmitted through a fiber optic cable be translated into?
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Voice, video or data.
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What type of cable is the predominant type of LAN fiber installed within buildings?
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Multi-mode.
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Differentiate multimode from singlemode fiber.
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Multimode-generally used in a LAN and the signal is generated by an LED.
Singlemode-used to provide high bandwwith for long distances,signal is generated by a laser. |
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What network topology consists of a single central cable to which all computers and other devices connect?
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The bus network.
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On what type of network topology does the data travel to each computer on the network until it reaches its destination?
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A ring network.
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What is the main disadvantage of the star topology?
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Reliance on a central node to perform almost all the functions on the network.
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What type of network is advantageous in a hostile environments in which connections are easily broken?
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A mesh topology.
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Define a hybrid topology.
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A group of star connected networks connected on a linear bus backbone.
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What is the data rate capacity for FDDI networks?
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100 mbps.
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What is the max distance of the FDDI network?
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100 Km or 60 miles.
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Name the three lower layers of the OSI model.
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Physical,datalink,network layers.
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Whaich layer provides a routing path through a network by which users can communicate?
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The network layer.
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The X.25 standard is designed for what kind of switching technique?
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Packet switching.
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