easyMultiple ChoiceObjective-mapped
FC0-U71 Practice Question: Which device is used to connect multiple devices…
Which device is used to connect multiple devices within the same network segment and forward data based on MAC addresses?
⚠ Common exam trap
Candidates often confuse a switch with a hub because both connect multiple devices, but the key distinction is that a switch forwards based on MAC addresses while a hub simply repeats signals without any addressing logic.
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
✓
Switch
A switch operates at Layer 2 (Data Link Layer) of the OSI model and uses MAC addresses to make forwarding decisions. It maintains a MAC address table (CAM table) to learn which port each device is connected to, allowing it to forward frames only to the intended destination port, reducing collisions and improving network efficiency.
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
Hubs broadcast to all ports.
- ✗
Modem
Why it's wrong here
Modems convert analog/digital signals.
- ✓
Switch
Why this is correct
Switches use MAC addresses to forward frames.
- ✗
Router
Why it's wrong here
Routers use IP addresses.
Quick reference
Access Control Model Comparison
| Model | Acronym | Who Controls Access? | Best For |
|---|---|---|---|
| Discretionary Access Control | DAC | Resource owner | Small teams, file shares |
| Mandatory Access Control | MAC | System / security labels | Classified govt / military |
| Role-Based Access Control | RBAC | Administrator (via roles) | Enterprise environments |
| Attribute-Based Access Control | ABAC | Policy engine (user + resource attributes) | Fine-grained, dynamic policies |
| Rule-Based Access Control | RuBAC | System rules / ACLs | Firewall rules, network ACLs |
Go deeper
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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.