A ping command executed on PC2 to SW1 whose IP address is 192.168.21.10 gave the following results: C:1>ping 192.168.21.10 Pinging 192.168.21.10 with 32 bytes of data: Reply from 192.168.21.10: bytes=32 time=6ms TTL=126 Reply from 192.168.21.10: bytes=32 time=5ms TTL=126 Reply from 192.168.21.10: bytes=32 time=5ms TTL=126 Reply from 192.168.21.10: bytes=32 time=6ms TTL=126 Ping statistics for 192.168.21.10 Packets: Sent = 4. Received = 4. Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 1ms, Maximum = 1ms, Average = Ims C:l> State the purpose of the ping command and explain in detail the meaning of the results displayed above after pinging.

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