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FC0-U71 Practice Question: Connect two separate local area networks (LANs)…
A company needs to connect two separate local area networks (LANs) in different buildings. Which device is required to route traffic between the networks?
⚠ Common exam trap
Test-takers frequently confuse a switch's ability to segment collision domains with the router's ability to segment broadcast domains and route between different IP networks, leading them to incorrectly select 'Switch' for inter-network connectivity.
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
✓
Router
A router is required to connect two separate LANs because it operates at Layer 3 (Network layer) of the OSI model and uses IP addresses to make forwarding decisions. Unlike switches or bridges, routers can examine the destination IP address, consult a routing table, and forward packets between different subnets or networks, even if they use different data link layer technologies.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Hub
Why it's wrong here
A hub operates at Layer 1 and cannot separate network segments.
- ✓
Router
Why this is correct
A router operates at Layer 3 and can connect different networks.
- ✗
Switch
Why it's wrong here
A switch operates at Layer 2 and connects devices within the same network.
- ✗
Bridge
Why it's wrong here
A bridge connects two similar network segments but does not route between different networks.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This FC0-U71 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the FC0-U71 exam.