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15 Cards in this Set
- Front
- Back
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Hub |
provides central connection for multiple media segments on same subnet. repeats signal on one port to all other ports. operate in half duplex because device path is shared and messages cant be sent while another one is in the process. |
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switch |
provides central connection for multiple media segments on same subnet. receives signal to one port and sends signal to destination ONLY by MAC address. Operates in Full duplex where there are dedicated paths for each communicating devices. and transmission medium dedicated only to communicating devices. |
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router |
connect 2 network segments with different subnet address. Has many connection with one for each subnet. Uses IP within packets to move packets between networks. maintain list of known networks and next router in path to reach destination network. |
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Bridge |
connects 2 segments within same subnet. they learn which side a host resides on by copying MAC address of source and placing it into MAC address table. |
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network adapter |
creates signals that are sent along networking medium. |
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Media |
Networking medium. provides path for signals between devices. copper uses electric Fiber optic uses light, wireless us radio wave. |
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what is RG 59 and its resistance |
coaxial cable used for cable tv and cable networking. Resitance is 75 ohms. |
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most common terminator type for coaxial cable |
F-type |
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STP and UTP? |
Shielded Twisted pair and Unshielded twisted pair. |
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Why should I twist pairs? |
Reduced EMI and crosstalk. EMI efects both twisted wires equally and is canceled out. Inexpensive compared to other media types. Easy to install. common. supported by latest standards. |
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why have shielded twisted pair? |
has copper shield around bundle of wire pair for extra EMI proection |
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Why do we have unshielded twisted pair? |
not copper shield. easier to work with and less expensive than STP. |
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Modem |
Modulator(sending end that converts binary to analog)/Demodulator(receiving end that converts analog back to binary) |
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Transciever |
responsible for converting digital data to digital signals to be sent on the medium. |
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WOL |
Wake-on-LAN. allows you to power computer over network through network adapter. |
