Exam N10-009 Topic 2 Question 147 Discussion

Actual exam question for CompTIA's N10-009 exam
Question #: 147
Topic #: 2
A network administrator is configuring a network for a new site that will have 150 users. Within the next year, the site is expected to grow by ten users. Each user will have two IP addresses, one for a computer and one for a phone connected to the network. Which of the following classful IPv4 address ranges will be best- suited for the network?

Suggested Answer: D Vote an answer

IPv4 addresses are divided into classes:
Class A: Supports 16,777,214 hosts (large enterprises).
Class B: Supports 65,534 hosts (medium to large networks).
Class C: Supports 254 hosts (small to medium networks).
Class D: Used for multicast, not for assigning IPs to hosts.
Step-by-step Calculation:
The network will have 150 users initially, with a projected growth of 10 users, totaling 160 users.
Each user has two devices, so 160 × 2 = 320 IP addresses needed.
A Class C subnet has 254 usable IPs by default, which is not sufficient.
A Class B subnet can support thousands of hosts, making it the most appropriate option.
Incorrect Options:
A:Class D: Reserved for multicast, not for host assignments.
C:Class A: Overkill for a network of this size.
D:Class C: Cannot support 320 hosts without subnetting, making Class B the best choice.

by anonyms at Mar 24, 2025, 08:39 PM

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anonyms
2025-03-24 20:39:33
Selected Answer: B
class c has two little hosts
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