13.9 What is the purpose of an IP address mask? Suppose an IP address is identified as 222.44.66.88/24. What is the network address in this case? What is the host address? How many hosts can this network address support? Repeat this exercise for the IP address 200.40.60.80/26. 13.10 Explain the concept of a DHCP lease. How is it obtained? How is it used? What does it provide? 14.5 In recent years, much of the storage and communication of data has been in digital form, even if the source data is actually analog. Even most television is now transmitted digitally. What benefits and advantages are gained by using digital storage and signaling?

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