Which standard is commonly associated with the Data Link Layer?

Which standard is commonly associated with the Data Link Layer?

• A. TCP
• B. IP
• C. Bluetooth
• D. Ethernet

Answer: (D)

Data Link Layer handles framing, MAC addressing, and access to the physical medium between devices on the same local network. Ethernet is the classic standard that embodies this layer, defining how data is framed, how devices are addressed with MAC addresses, and how multiple devices share and access the wired medium. This makes Ethernet the go-to example for what the Data Link Layer does in practice. In contrast, TCP is a protocol at the Transport Layer that provides end-to-end reliability and flow control, IP operates at the Network Layer to route packets between networks, and Bluetooth is a wireless technology with its own stack that serves short-range connections but isn’t the standard reference for the Data Link Layer in most coursework.

Data Link Layer handles framing, MAC addressing, and access to the physical medium between devices on the same local network. Ethernet is the classic standard that embodies this layer, defining how data is framed, how devices are addressed with MAC addresses, and how multiple devices share and access the wired medium. This makes Ethernet the go-to example for what the Data Link Layer does in practice.

In contrast, TCP is a protocol at the Transport Layer that provides end-to-end reliability and flow control, IP operates at the Network Layer to route packets between networks, and Bluetooth is a wireless technology with its own stack that serves short-range connections but isn’t the standard reference for the Data Link Layer in most coursework.