easyMultiple ChoiceObjective-mapped
FC0-U71 Practice Question: A technician is setting up a small office network
A technician is setting up a small office network. Which device should be used to connect multiple computers and allow them to communicate with each other?
⚠ Common exam trap
Many exam-takers confuse a switch with a hub because both have multiple ports and connect computers, but the key distinction is that a switch uses MAC address learning and forwarding logic (Layer 2) while a hub is a simple electrical repeater (Layer 1).
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 of the OSI model and uses MAC addresses to forward frames only to the specific port where the destination device is connected. This allows multiple computers on the same local network to communicate directly with each other without unnecessary traffic, making it the correct device for interconnecting computers in a small office LAN.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Router
Why it's wrong here
A router is used to connect different networks, not primarily to connect local devices.
- ✗
Modem
Why it's wrong here
A modem connects to the ISP, not for local device interconnection.
- ✓
Switch
Why this is correct
A switch connects devices on a local network and forwards frames based on MAC addresses.
- ✗
Hub
Why it's wrong here
A hub is outdated and broadcasts to all ports, less efficient than a switch.
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 |
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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.