长跨距传输中，各个本地站点监控数据，到达远端服务器的网络延时最大多少

这个没有要求，时延要求越小越好，就像我们要到谷歌的DNS，最大是多少，最小是多少，自然是时延越小，速度越快

C:\Documents and Settings\c114>ping 8.8.8.8
Pinging 8.8.8.8 with 32 bytes of data:
Reply from 8.8.8.8: bytes=32 time=669ms TTL=41
Reply from 8.8.8.8: bytes=32 time=649ms TTL=41
Reply from 8.8.8.8: bytes=32 time=649ms TTL=41
Reply from 8.8.8.8: bytes=32 time=659ms TTL=41
Ping statistics for 8.8.8.8:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 649ms, Maximum = 669ms, Average = 656ms