Given a class C network a technician has been tasked with creating a separate subnet for each of
the eight departments in the company. Which of the following network masks would allow for each
department to have a unique network space and what is the maximum number of hosts each
department could have?
A.
Network 255.255.255.192, 62 hosts
B.
Network 255.255.255.224, 30 hosts
C.
Network 255.255.255.240, 16 hosts
D.
Network 255.255.255.248, 32 hosts
B
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Agreed!
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Fucking agree!
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It’s B 8 networks 30 hosts /27. Subnet 248 is a /29 that has 32 networks and 6 hosts.
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Correct answer is B. I use a common use IP as an example 192.168.1.1
With subnet mask 255.255.255.224
You get eight subnets
First subnet ID: 192.168.1.0
Second subnet ID: 192.168.1.32
Third subnet ID: 192.168.1.64
Fourth subnet ID: 192.168.1.96
Fifth subnet ID: 192.168.1.128
Sixth subnet ID: 192.168.1.160
Seventh subnet ID: 192.168.1.192
Eighth subnet ID: 192.168.1.224
Don’t forget we need one IP for subnet ID and one IP for broadcast address. So each subnet has 32-2=30 hosts.
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Extremely helpful – thank you.
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I chose B even without looking at the other options
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