Match each network device to its primary function.
Drag a concept onto its matching description — or click a concept then click the description.
Forwards packets between different networks based on IP addresses
Forwards frames within the same network based on MAC addresses
Filters traffic based on security rules
Connects wireless clients to a wired network
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Router: Connects multiple networks and routes data packets between them.
The correct matches are: Router → routes between networks, Switch → forwards within a LAN using MAC, Firewall → filters traffic by rules, Access Point → wireless connectivity. Common confusions include mixing router and modem functions, and hub vs switch.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Router: Connects multiple networks and routes data packets between them.
Why this is correct
Routers operate at Layer 3 and use IP addresses to forward packets between different networks.
Switch: Connects devices within a single network and forwards data based on MAC addresses.
Why this is correct
Switches operate at Layer 2 and use MAC addresses to efficiently direct frames to specific devices.
Firewall: Monitors and controls incoming/outgoing network traffic based on security rules.
Why this is correct
Firewalls enforce security policies by permitting or denying traffic based on rules.
Access Point: Allows wireless devices to connect to a wired network.
Why this is correct
Access points bridge wireless clients to a wired LAN, often using Wi-Fi.
Modem: Connects multiple networks and routes data packets between them.
Why it's wrong here
Incorrect — a modem modulates/demodulates signals for internet access, not routing.
Hub: Connects devices within a single network and forwards data based on MAC addresses.
Why it's wrong here
Incorrect — a hub repeats signals to all ports, not forwarding based on MAC addresses (that's a switch).
Quick reference
| 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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Last reviewed: Jun 11, 2026
This N10-009 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 N10-009 exam.
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