I've recently learned that this is a bit of a trick question. How many routers are in embedded the /23? How many addresses are reserved for multicast? Are you on AWS VPC, where they reserve even a few more addresses for internal management?
All of those are good points. But a surprising number of people can't get to the starting point 2^(32-23)=512. I usually subtract 2 and say 510. No IPs are reserved for multicast. Maybe you meant broadcast?
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I've recently learned that this is a bit of a trick question. How many routers are in embedded the /23? How many addresses are reserved for multicast? Are you on AWS VPC, where they reserve even a few more addresses for internal management?
All of those are good points. But a surprising number of people can't get to the starting point 2^(32-23)=512. I usually subtract 2 and say 510. No IPs are reserved for multicast. Maybe you meant broadcast?