Refer to the exhibit.
A network architect is deciding whether to use a/24 subnet or a/25 subnet for each VLAN shown in
the exhibit. What is a valid reason for the architect to decide on a/24 subnet?
A.
A/24 subnet uses up fewer IP addresses than a/25 subnet and better conserves the IP
addressing space
B.
A/24 subnet provides enough IP addresses for the current needs, but a/25 subnet does not
C.
A/24 subnet scales better, allowing the company to add interface modules without changing the
VLANs
D.
A/24 subnet provides better compatibility with IPv6 addressing, so it future proofs the solution
A – totally wrong. /25 has 128, /24 has 256
B – Might be true, but we don’t know how many users they have with just the info given
C – Probably the right answer. VLANs should have no more than 250 available IP addresses for easy maintanence. If choosing between /25 and /24, /24 has more wiggle room to add more users/endpoints.
D – All subnets have the same “compatibility” with IPv6, whatever that means…
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I also say C
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