ICMP stands for “Internet Control Message Protocol”, ICMP is extensions towards the Internet Protocol described by RFC 792. ICMP is one reporting process for TCP/IP communications. Most people understand ICMP once they make use of the Ping command, which delivers data (Match request and Echo response messages) over a community and waits to get a reaction after which reports along time it requires to get an answer or a mistake that implies no response was received.
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The hard disk was invented on September 13, 1956 by IBM team led by Rey Johnson (considered as “father” of the disk drive). Earlier hard disk drives were large and cumbersome devices.