| Communications |
| What
is needed for successful communications? |
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| Sending |
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| device — initiates |
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| instruction to |
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| transmit data, |
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| instructions, or |
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| information |
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| Communications |
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| device — connects |
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| the sending device to |
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| the communications |
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| channel |
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| Communications |
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| channel — media |
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| on which data, |
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| instructions, or |
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| information travel |
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| Communications |
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| device — connects |
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| the communications |
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| channel to the |
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| receiving device |
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| Receiving |
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| device — accepts |
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| transmission of data, |
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| instructions, or |
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| information |
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