我在大学使用互联网。所有房间和办公室都通过许多交换机与以太网电缆连接。我经常出现数据包丢失的情况，我认为某个交换机或调制解调器有问题。如何确定原因？（我知道缺少许多信息，但请告诉我您需要知道的内容，我会更新问题）
ping -t google.com
Reply from 216.58.211.46: bytes=32 time=92ms TTL=48
Request timed out.
Reply from 216.58.211.46: bytes=32 time=86ms TTL=48
Reply from 216.58.211.46: bytes=32 time=77ms TTL=48
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Reply from 216.58.211.46: bytes=32 time=92ms TTL=48
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Reply from 216.58.211.46: bytes=32 time=77ms TTL=48
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Reply from 216.58.211.46: bytes=32 time=92ms TTL=48
Reply from 216.58.211.46: bytes=32 time=93ms TTL=48
Reply from 216.58.211.46: bytes=32 time=93ms TTL=48
Reply from 216.58.211.46: bytes=32 time=87ms TTL=48
Reply from 216.58.211.46: bytes=32 time=98ms TTL=48
Reply from 216.58.211.46: bytes=32 time=93ms TTL=48
Reply from 216.58.211.46: bytes=32 time=108ms TTL=48
Reply from 216.58.211.46: bytes=32 time=98ms TTL=48
Reply from 216.58.211.46: bytes=32 time=83ms TTL=48
Reply from 216.58.211.46: bytes=32 time=70ms TTL=48
Reply from 216.58.211.46: bytes=32 time=101ms TTL=48
Reply from 216.58.211.46: bytes=32 time=101ms TTL=48
Reply from 216.58.211.46: bytes=32 time=96ms TTL=48
Reply from 216.58.211.46: bytes=32 time=98ms TTL=48
Reply from 216.58.211.46: bytes=32 time=101ms TTL=48
Request timed out.
Reply from 216.58.211.46: bytes=32 time=96ms TTL=48
Request timed out.
Reply from 216.58.211.46: bytes=32 time=99ms TTL=48
Reply from 216.58.211.46: bytes=32 time=122ms TTL=48
Reply from 216.58.211.46: bytes=32 time=97ms TTL=48
Reply from 216.58.211.46: bytes=32 time=98ms TTL=48
Reply from 216.58.211.46: bytes=32 time=96ms TTL=48
Reply from 216.58.211.46: bytes=32 time=98ms TTL=48
Reply from 216.58.211.46: bytes=32 time=102ms TTL=48
Reply from 216.58.211.46: bytes=32 time=97ms TTL=48
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Reply from 216.58.211.46: bytes=32 time=92ms TTL=48
Reply from 216.58.211.46: bytes=32 time=96ms TTL=48
Reply from 216.58.211.46: bytes=32 time=88ms TTL=48
Reply from 216.58.211.46: bytes=32 time=97ms TTL=48
Reply from 216.58.211.46: bytes=32 time=95ms TTL=48
Reply from 216.58.211.46: bytes=32 time=122ms TTL=48
Reply from 216.58.211.46: bytes=32 time=88ms TTL=48
Reply from 216.58.211.46: bytes=32 time=100ms TTL=48
Reply from 216.58.211.46: bytes=32 time=99ms TTL=48
Reply from 216.58.211.46: bytes=32 time=94ms TTL=48
Reply from 216.58.211.46: bytes=32 time=95ms TTL=48
Reply from 216.58.211.46: bytes=32 time=97ms TTL=48
Reply from 216.58.211.46: bytes=32 time=101ms TTL=48
Reply from 216.58.211.46: bytes=32 time=88ms TTL=48
Reply from 216.58.211.46: bytes=32 time=94ms TTL=48
Reply from 216.58.211.46: bytes=32 time=78ms TTL=48
Reply from 216.58.211.46: bytes=32 time=94ms TTL=48
Reply from 216.58.211.46: bytes=32 time=100ms TTL=48
Request timed out.
Reply from 216.58.211.46: bytes=32 time=86ms TTL=48
Reply from 216.58.211.46: bytes=32 time=102ms TTL=48
Reply from 216.58.211.46: bytes=32 time=95ms TTL=48
Reply from 216.58.211.46: bytes=32 time=99ms TTL=48
Reply from 216.58.211.46: bytes=32 time=94ms TTL=48
Reply from 216.58.211.46: bytes=32 time=96ms TTL=48
Reply from 216.58.211.46: bytes=32 time=101ms TTL=48
Reply from 216.58.211.46: bytes=32 time=96ms TTL=48
Reply from 216.58.211.46: bytes=32 time=95ms TTL=48
Reply from 216.58.211.46: bytes=32 time=97ms TTL=48
Reply from 216.58.211.46: bytes=32 time=74ms TTL=48
Reply from 216.58.211.46: bytes=32 time=90ms TTL=48
Reply from 216.58.211.46: bytes=32 time=87ms TTL=48
Ping statistics for 216.58.211.46:
Packets: Sent = 128, Received = 123, Lost = 5 (3% loss),
Approximate round trip times in milli-seconds:
Minimum = 70ms, Maximum = 131ms, Average = 94ms