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| Q. |
Which of the following is an application layer service? |
| A. | network virtual terminal |
| B. | file transfer, access, and management |
| C. | mail service |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| Explanation: the services provided by the application layer are network virtual terminal, file transfer, access and management, mail services, directory services, various file and data operations. | |
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