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| application level | |||
| application layer (Layer seven of the OSI model, the layer at which applications access network services. This layer represents the services that directly support applications, such as software for file transfer, database access, and e-mail) | |||
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nivel de aplicacion : 10 短语, 7 学科 |
| 一般 | 2 |
| 微软 | 2 |
| 政治 | 1 |
| 组织机构名称 | 2 |
| 经济 | 1 |
| 联合国 | 1 |
| 通讯 | 1 |