Question: In Fig. 6-36 we saw that in addition to the 32-bit acknowledgement field, there is an ACK bit in the fourth word. Does this really

In Fig. 6-36 we saw that in addition to the 32-bit acknowledgement field, there is an ACK bit in the fourth word. Does this really add anything? Why or why not?

Figure 6-36

32 Bits Source port Destination port Sequence number Acknowledgement number CEUAPRS F WCRCSSYI REGKHTNN TCP Window size header length Checksum Urgent pointer Options (0 or more 32-bit words) Data (optional)

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