Which of the following network access standard is used for connecting station to a circuit switched network ?
| A. | X.3 |
| B. | X.21 |
| C. | X.25 |
| D. | X.75 |
Answer : B Explanation : |
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Option: A Explanation : Explanation will come here. Explanation will come here. Explanation will come here. Explanation will come here. Explanation will come here. |
