But in NT everything is a handle in much more consistent way than UNIX's everything is a file. Each handle has security descriptor/ACLs, not only a files, and

But in NT everything is a handle in much more consistent way than UNIX's everything is a file. Each handle has security descriptor/ACLs, not only a files, and format is the same. Each handle can be waited for fr with same system call, and you could mix and match file, socket and process handles in same call.