Windows XP是一种 (56) 操作系统，为了支持网络通信的功能，在它的网络体系中包含了网络API、传输驱动程序接口(TDI)、TDI传送器、NDIS小端口驱动程序和 (57) ，同时NDIS库也为 (58) 的使用提供了函数接口。

As administrators seek to block dangerous email attachments through the recognition ofwell—known (74) ，virus writers use other extensions to circumvent such protection．Executable(.exe)files are renamed to．bat and．cmd plus a whole list of other extensions and wilt still runand successfully infect target users．
Frequently，hackers try to penetrate networks by sending an attachment that
looks like a flash movie，which，while displaying some cute animation，simultaneouslyruns commands in the background to steal your passwords and give the (75) access to yournetwork．
供选择答案：

A．USER
B．USERS
C．anonymous
D．Ftp