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Suppose an Ethernet packet represents a TCP acknowledgment; that is, the packet contains an IPv4 header and a 20-byte TCP header but nothing else.

Suppose an Ethernet packet represents a TCP acknowledgment; that is, the packet contains an IPv4 header and a 20-byte TCP header but nothing else.


2.0. How can a receiving host tell if an arriving IPv4 packet is unfragmented? Hint: such a packet will be both the "first fragment" and the "last fragment"; how are these two states marked in the IPv4 header?

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One can check an unfragmented TCP acknowledgment packet by... View the full answer

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