Wireless network interface cards (NICs) or adapters locate and communicate to an access point to provide network access. Which term describes these devices?

Wireless network interface cards (NICs) or adapters locate and communicate to an access point to provide network access. Which term describes these devices?

• A. Yagi antennas
• B. Wireless Network Cards (NIC)/Wireless network adapters
• C. Wireless bridges
• D. Wireless modems

Answer: (B)

The main idea here is the device that lets a computer join a Wi‑Fi network by locating and talking to an access point. A wireless NIC (network interface card) or wireless network adapter is exactly that role: it provides the radio interface and the network connection so the computer can authenticate with the access point, associate to the network, and transmit data using the 802.11 standards. These can be built into the computer or added as an external USB, PCIe, or other form factor, but they all serve the same purpose—providing the wireless link to the network. The other options describe hardware with different roles. Yagi antennas are directional antennas used to extend or aim wireless signals, not the device that enables wireless access itself. Wireless bridges connect two networks or extend networks across different media, rather than serving as the end device that provides the network interface to a single host. Wireless modems historically convert digital data for transmission over telephone lines or cable networks and are not the component that directly supplies a host with a Wi‑Fi connection.

The main idea here is the device that lets a computer join a Wi‑Fi network by locating and talking to an access point. A wireless NIC (network interface card) or wireless network adapter is exactly that role: it provides the radio interface and the network connection so the computer can authenticate with the access point, associate to the network, and transmit data using the 802.11 standards. These can be built into the computer or added as an external USB, PCIe, or other form factor, but they all serve the same purpose—providing the wireless link to the network.

The other options describe hardware with different roles. Yagi antennas are directional antennas used to extend or aim wireless signals, not the device that enables wireless access itself. Wireless bridges connect two networks or extend networks across different media, rather than serving as the end device that provides the network interface to a single host. Wireless modems historically convert digital data for transmission over telephone lines or cable networks and are not the component that directly supplies a host with a Wi‑Fi connection.