Test your network hardware knowledge

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1. Forwarding data packets between devices in the same network. A network switch is used to forward data packets within the same network. It operates at the Data Link Layer (Layer 2) of the OSI model and helps connect devices on a local network.

2. Router. A router is responsible for directing data packets between different networks. It operates at Layer 3 (Network Layer) and determines the best path for the data to travel.

3. Twisted pair cable (e.g., Cat5e, Cat6). Twisted pair cables, such as Cat5e and Cat6, are commonly used in modern Ethernet networks. These cables consist of pairs of insulated copper wires twisted together to reduce electromagnetic interference.

4. Power over Ethernet. PoE (Power over Ethernet) allows network cables to deliver both data and power to devices like IP cameras, phones, and access points, simplifying installation by eliminating the need for separate power cables.

5. Modem. A modem (short for modulator-demodulator) converts digital signals from a computer into analog signals for transmission over telephone lines or cable, and vice versa, enabling internet access.

6. Blocking unauthorized access. A firewall monitors and controls incoming and outgoing network traffic based on predetermined security rules. Its primary role is to block unauthorized access while permitting legitimate communication.

7. A device that connects wireless clients to a wired network. An access point (AP) serves as a bridge between wireless devices and a wired network, allowing wireless clients to connect to the network.

8. VLAN. VLAN (Virtual Local Area Network) allows network administrators to segment a physical network into multiple logical networks, improving security and traffic management without changing physical connections.

9. Router. A router operates at Layer 3 of the OSI model and routes data packets between different networks, enabling communication across various IP subnets.

10. Network Interface Card. A NIC (Network Interface Card) is a hardware component that allows a device to connect to a network, either through wired Ethernet or wireless Wi-Fi.