a. You have designed a small office local area network (LAN) for a local business where there will be a maximum of 160 IPv4 addresses required for users, peripherals, and intermediary devices. Identify the most suitable block of addresses you would assign to this network and explain why. You should consider efficiency in terms of address usage. b. Describe two techniques used by operating systems to schedule processes. Illustrate how each technique can produce a different order of execution by showing an example with four concurrent processes.