A ______ is a networking device that filters network traffic while connecting multiple computers or communicating devices.

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**Solution:**

1. A **switch** is a networking device that connects multiple computers or devices within a network.

2. It operates at the **data link layer (Layer 2)** of the OSI model.

3. The switch filters network traffic by forwarding data frames only to the specific destination port based on the **MAC address** of the connected devices.

4. This selective forwarding makes it more efficient than devices like hubs, which broadcast data to all ports.

5. Other options:
   - **Router:** Connects different networks and routes data between them.
   - **Gateway:** Acts as a protocol converter between different networks.
   - **Repeater:** Amplifies signals to extend the transmission distance but does not filter traffic.

**Answer:** switch

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