connectivity       
noun [ U ]  internet & telecoms specialized uk/ˌkɒn.ekˈtɪv.ə.ti/ us/ˌkɑː.nekˈtɪv.ə.t̬i/
 (电脑、程序、设备、系统等的)连接性能
the ability of a computer, program, device, or system to connect with one or more others
  After installing, you should test for connectivity. 你应该在安装之后测试它的连接性能。