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N10-009 · Question #616
N10-009 Question #616: Real Exam Question with Answer & Explanation
The correct answer is C: /27. A /27 mask provides 32 total addresses per subnet, 30 of which are usable. A Class C network divided into /27 segments yields exactly eight subnets, each supporting the required 30 devices.
Submitted by femi9· Mar 6, 2026Network implementation
Question
A customer wants to segment the local network into eight sections with 30 devices each. A junior network technician needs to select the appropriate subnet mask for the customer's chosen Class С network. Which of the following meets the requirement?
Options
- A/25
- B/26
- C/27
- D/28
Explanation
A /27 mask provides 32 total addresses per subnet, 30 of which are usable. A Class C network divided into /27 segments yields exactly eight subnets, each supporting the required 30 devices.
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