Q: 10
How many usable IP addresses are there in a 20-bit subnet?
Options
Discussion
E. not C. Saw a similar question in Mikrotik practice and 4094 is correct for usable addresses in /20.
Option E
D looks close but it's E, can't forget to subtract both network and broadcast from 4096 for usable addresses.
I don’t think it’s E. C makes more sense since a 20-bit subnet gives 2048 addresses, so that should be the usable count. Pretty sure on this, but correct me if I missed a trick.
Yup, E here.
E
Feels like C is right, since 20 bits for hosts should be 2048 addresses. Maybe I'm missing something subtle about how "usable" is counted here, but that's what I'd pick based on the math. Open to a different take though!
E imo. A /20 subnet gives you 4096 addresses, subtract network and broadcast so you end up with 4094 usable hosts. The wording almost always excludes those two. Unless Mikrotik has some special definition I'm missing?
E tbh-D looks tempting if you forget it's 4096 minus 2, not minus 50 or something.
D makes sense for usable, since 4096 total minus network and broadcast is 2046. Pretty sure that's the trap here.
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