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200-901 Network Fundamentals Practice Question

A network engineer is designing a subnetting scheme for a company that requires 5 subnets from the 192.168.1.0/24 network. What subnet mask should be used, and how many usable hosts per subnet will be available?

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

255.255.255.224 with 30 usable hosts per subnet

To create 5 subnets, at least 3 bits are needed (2^3=8 subnets). /27 (255.255.255.224) gives 8 subnets with 30 usable hosts each (2^5-2=30).

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✗
255.255.255.192 with 62 usable hosts per subnet
Why it's wrong here
255.255.255.192 (/26) gives 4 subnets (2^2=4), not enough for 5.
✓
255.255.255.224 with 30 usable hosts per subnet
Why this is correct
255.255.255.224 (/27) provides 8 subnets (2^3=8) with 30 usable hosts each (2^5-2=30).
✗
255.255.255.240 with 14 usable hosts per subnet
Why it's wrong here
255.255.255.240 (/28) gives 16 subnets (2^4=16) but only 14 usable hosts, which may be insufficient.
✗
255.255.255.248 with 6 usable hosts per subnet
Why it's wrong here
255.255.255.248 (/29) gives 32 subnets (2^5=32) but only 6 usable hosts, too few.

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200-901 Network Fundamentals Practice Question

Why each option matters

Option-by-option breakdown

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