Which of the following is the minimum subnet mask to allow 172.16.1.5 and 172.16.4.3 to be on the same subnet?
A. /19
B. /21
C. /22
D. /24
4 Comments on “Which of the following is the minimum subnet mask to allow 172.16.1.5 and 172.16.4.3 to be on the same subnet?”
AAAsays:
Can someone explain why it’s /21
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Marcus Vincentsays:
Because /21 allows 8 different networks starting with 172.16.0.0. If using a cidr 22, you get 4 networks starting with 172.16.0, ending at 172.16.3.254, which doesn’t include the 172.16.4.0 network. Check out subnetting.net. I hope this helps.
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Sarkis Kalajiansays:
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Can someone explain why it’s /21
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Because /21 allows 8 different networks starting with 172.16.0.0. If using a cidr 22, you get 4 networks starting with 172.16.0, ending at 172.16.3.254, which doesn’t include the 172.16.4.0 network. Check out subnetting.net. I hope this helps.
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