In page 197 Question 4 - What is the host number for the IP 18.104.22.168 assuming a default subnet mask? A. 129, B. 129.17, C. 129.17.63, D. 17.63.4, E. 63.4, F. 4
On Page 333 of the same book, the answer was given as B . But I think it should be E Which is correct please?