Which category is used to send an ICMP error message to a client?

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Multiple Choice

Which category is used to send an ICMP error message to a client?

Explanation:
The function described is carried by the ICMP protocol. ICMP is the part of the IP suite that handles error reporting and diagnostics. When a problem prevents a packet from being delivered (for example, a host is unreachable or time exceeded), a device generates an ICMP error message and sends it back to the source that sent the original packet. The other options don’t fit because the ACK bit is part of TCP’s handshaking, ICMP tunneling is a technique for using ICMP to carry data rather than a category for error reporting, and HTTP tunneling is unrelated to ICMP.

The function described is carried by the ICMP protocol. ICMP is the part of the IP suite that handles error reporting and diagnostics. When a problem prevents a packet from being delivered (for example, a host is unreachable or time exceeded), a device generates an ICMP error message and sends it back to the source that sent the original packet. The other options don’t fit because the ACK bit is part of TCP’s handshaking, ICMP tunneling is a technique for using ICMP to carry data rather than a category for error reporting, and HTTP tunneling is unrelated to ICMP.

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