Which device is described as being commonly used to enable Wi‑Fi connectivity and is now built into devices to provide access?

Which device is described as being commonly used to enable Wi‑Fi connectivity and is now built into devices to provide access?

• A. Router
• B. Modem
• C. Network interface card
• D. Switch

Answer: (B)

The ability for a device to join a Wi‑Fi network comes from the network interface card, specifically a wireless NIC or adapter. This hardware is what actually handles the radio communication with a Wi‑Fi access point, encoding and decoding signals and managing the wireless connection. In modern devices, this capability is built in—laptops, smartphones, and tablets include a wireless NIC by default so they can access Wi‑Fi without any extra hardware. While a modem, router, or switch all play essential roles in a network, they serve different purposes. A modem connects your home to the internet service provider and modulates signals for that link; a router shares that internet connection and often provides Wi‑Fi to multiple devices; a switch connects multiple devices within a wired network. None of these provide the direct wireless access on the device itself the way a network interface card does.

The ability for a device to join a Wi‑Fi network comes from the network interface card, specifically a wireless NIC or adapter. This hardware is what actually handles the radio communication with a Wi‑Fi access point, encoding and decoding signals and managing the wireless connection. In modern devices, this capability is built in—laptops, smartphones, and tablets include a wireless NIC by default so they can access Wi‑Fi without any extra hardware.

While a modem, router, or switch all play essential roles in a network, they serve different purposes. A modem connects your home to the internet service provider and modulates signals for that link; a router shares that internet connection and often provides Wi‑Fi to multiple devices; a switch connects multiple devices within a wired network. None of these provide the direct wireless access on the device itself the way a network interface card does.