CompTIA
220-1201 · Question #321
A technician is configuring a new office network for a customer. Which of the following subnets should the technician use for the local network?
The correct answer is C. 172.31.88.0/24. The 172.31.88.0/24 subnet falls within the private IP address range (172.16.0.0–172.31.255.255), which is reserved for internal network use. The other options are public IP ranges and should not be used for local networks.
Submitted by katya_ua· Mar 30, 2026
Question
A technician is configuring a new office network for a customer. Which of the following subnets should the technician use for the local network?
Options
- A52.84.52.0/25
- B85.159.80.0/26
- C172.31.88.0/24
- D195.205.143.160/27
How the community answered
(26 responses)- A12% (3)
- B4% (1)
- C81% (21)
- D4% (1)
Explanation
The 172.31.88.0/24 subnet falls within the private IP address range (172.16.0.0–172.31.255.255), which is reserved for internal network use. The other options are public IP ranges and should not be used for local networks.
Topics
#Private IP addressing#Network configuration#Subnetting
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