Question of ping

 C:\Users\somet>ping /?

Usage: ping [-t] [-a] [-n count] [-l size] [-f] [-i TTL] [-v TOS]

            [-r count] [-s count] [[-j host-list] | [-k host-list]]

            [-w timeout] [-R] [-S srcaddr] [-c compartment] [-p]

            [-4] [-6] target_name

Options:

    -t             Ping the specified host until stopped.

                   To see statistics and continue - type Control-Break;

                   To stop - type Control-C.

    -a             Resolve addresses to hostnames.

    -n count       Number of echo requests to send.

    -l size        Send buffer size.

    -f             Set Don't Fragment flag in packet (IPv4-only).

    -i TTL         Time To Live.

    -v TOS         Type Of Service (IPv4-only. This setting has been deprecated

                   and has no effect on the type of service field in the IP

                   Header).

    -r count       Record route for count hops (IPv4-only).

    -s count       Timestamp for count hops (IPv4-only).

    -j host-list   Loose source route along host-list (IPv4-only).

    -k host-list   Strict source route along host-list (IPv4-only).

    -w timeout     Timeout in milliseconds to wait for each reply.

    -R             Use routing header to test reverse route also (IPv6-only).

                   Per RFC 5095 the use of this routing header has been

                   deprecated. Some systems may drop echo requests if

                   this header is used.

    -S srcaddr     Source address to use.

    -c compartment Routing compartment identifier.

    -p             Ping a Hyper-V Network Virtualization provider address.

    -4             Force using IPv4.

    -6             Force using IPv6.