Ping icmp

Question

Which statement is false?

PING is a TCP/IP application that sends datagrams once every second in the hope of an echo response from the machine being PINGED

If the machine is connected and running a TCP/IP protocol stack, it should respond to the PING datagram with a datagram of its own

If PING encounters an error condition, an ICMP message is not returned

PING display the time of the return response in milliseconds or one of several error message

Answer 1

Ans-option (C) is incorrect

ping command is used to check self connectivity ,here loop back address 127.0.0.1 is used .

(A)- PING is a TCP/IP application that sends datagrams once every second in the hope of an echo response from the machine being PINGED

(B)- If the machine is connected and running a TCP/IP protocol stack, it should respond to the PING datagram with a datagram of its own

(C)-if ping encounters an error condition ,in that case ICMP error message is returned.

(D)- PING display the time of the return response in milliseconds or one of several error message

Comments

What does it mean bt TCP/IP application ?

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actually TCP/IP  is a model like OSI model

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PING request itself is an ICMP packet.

And there is no ICMP generated for an ICMP packet.

Then why you are saying that option C is incorrect?