FC0-U71 Tech Concepts and Terminology Practice Question
A technician is configuring a new Windows workstation and needs to assign a static IPv4 address that allows the computer to communicate with other devices on the same local network segment. The network uses a 255.255.255.0 subnet mask. Which of the following addresses should the technician assign to the workstation?
⚠ Common exam trap
The trap here is choosing an address in the right range but forgetting that the all-zeros network and all-ones broadcast addresses cannot be assigned to a host.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
192.168.10.100
A valid static IPv4 host address on a /24 subnet must fall between the network address and broadcast address. With 192.168.10.0/24, usable hosts are 192.168.10.1 to 192.168.10.254. Only 192.168.10.100 meets this requirement and keeps the workstation on the same local segment.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
192.168.10.255
Why it's wrong here
192.168.10.255 is the directed broadcast address for the 192.168.10.0/24 subnet, where all host bits are one. Hosts cannot use it as their own address because it targets every device on the segment. Assigning it would break normal unicast communication and cause conflicts, so it is not appropriate for the workstation.
- ✗
192.168.11.100
Why it's wrong here
192.168.11.100 belongs to a different /24 subnet than 192.168.10.0/24, so it would not be on the same local segment as the other devices. With a 255.255.255.0 mask, the workstation would treat 192.168.10.x addresses as remote and require a router to reach them. This does not meet the requirement of communicating directly on the same segment.
- ✓
192.168.10.100
Why this is correct
192.168.10.100 falls within the 192.168.10.0/24 range and is neither the network address nor the broadcast address, so it is a valid host address. With the 255.255.255.0 mask, usable hosts range from 192.168.10.1 through 192.168.10.254. This address lets the workstation communicate on the local segment as required in the scenario.
- ✗
192.168.10.0
Why it's wrong here
With a 255.255.255.0 mask, the address 192.168.10.0 is the network address, where all host bits are zero. It cannot be assigned to a host because it identifies the subnet itself. Assigning it would cause routing and communication failures on the local segment, so it is not a valid host address in this scenario.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official CompTIA exam blueprint
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