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Q. |
RS-232, RS-449, RS-530, V-24, and X-21 are examples of? |
A. | standards for various types of transmission channels. |
B. | standards for interfaces between terminals and modems. |
C. | two methods of error detection and correction |
D. | standards for end-to-end performance of data communication systems. |
Answer» B. standards for interfaces between terminals and modems. |
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