A．scannerB．printerC．displayD．keyboardA ______ copies a ……

单项选择题One use of networks is to let several computers share ______ such as file systems, printers, and tape drives.

单项选择题C++ is used with proper______design techniques.

单项选择题As they access the corporate network, mobile and remote users inadvertently can infect the network with(72)and worms acquired from unprotected public networks。

单项选择题Because Web Servers are platform and application(74)they can send or request data from legacy or external applications including databases。

单项选择题下列网络互连设备中，属于物理层的是( )。