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CompTIA N10-009 Exam - Topic 2 Question 43 Discussion

A network administrator needs to connect two routers in a point-to-point configuration and conserve IP space. Which of the following subnets should the administrator use?
D) /30
A) 724
B) /26
C) /28

CompTIA N10-009 Exam - Topic 2 Question 43 Discussion

Actual exam question for CompTIA's N10-009 exam
Question #: 43
Topic #: 2
[All N10-009 Questions]

A network administrator needs to connect two routers in a point-to-point configuration and conserve IP space. Which of the following subnets should the administrator use?

Show Suggested Answer Hide Answer
Suggested Answer: D

Using a /30 subnet mask is the most efficient way to conserve IP space for a point-to-point connection between two routers. A /30 subnet provides four IP addresses, two of which can be assigned to the router interfaces, one for the network address, and one for the broadcast address. This makes it ideal for point-to-point links where only two usable IP addresses are needed.Reference: CompTIA Network+ study materials and subnetting principles.


by Karan at Aug 16, 2026, 12:36 AM

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Novella
3 days ago
I didn’t know /30 was specifically for that. Surprising!
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Antonio
8 days ago
/26 is way too big for just two routers!
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Providencia
13 days ago
Wait, why not /28? Seems like a waste of IPs.
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Walton
19 days ago
I agree, /30 is the best choice here!
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Niesha
24 days ago
Definitely go with /30 for point-to-point.
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Camellia
29 days ago
I’m a bit confused; could /26 work too? I thought it was for larger networks, but I’m not completely sure.
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Audry
1 month ago
I think I practiced a similar question where /30 was the answer for point-to-point connections. It makes sense to conserve IP space.
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Dottie
1 month ago
I'm not entirely sure, but I feel like /28 might be too many addresses for just two routers.
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Dwight
1 month ago
I remember studying subnetting, and I think a /30 subnet is often used for point-to-point links since it provides just enough IPs for two devices.
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