N10-009 · Question #82
A customer needs six usable IP addresses. Which of the following best meets this requirement?
The correct answer is D. 255.255.255.240. To meet the requirement of six usable IP addresses, the subnet mask 255.255.255.240 (also represented as /28) is the best fit. A /28 subnet provides 16 total IP addresses, out of which 14 are usable (the first address is the network address, and the last address is the…
Question
A customer needs six usable IP addresses. Which of the following best meets this requirement?
Options
- A255.255.255.128
- B255.255.255.192
- C255.255.255.224
- D255.255.255.240
How the community answered
(28 responses)- A7% (2)
- B4% (1)
- C14% (4)
- D75% (21)
Explanation
To meet the requirement of six usable IP addresses, the subnet mask 255.255.255.240 (also represented as /28) is the best fit. A /28 subnet provides 16 total IP addresses, out of which 14 are usable (the first address is the network address, and the last address is the broadcast address). This meets and exceeds the requirement for six usable IP addresses, ensuring there are enough addresses for future expansion if needed. The other options provide either too few or too many addresses for this specific requirement.
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