Where do network standards reside according to the material?

Where do network standards reside according to the material?

• A. Layer 1 (Physical)
• B. Layer 2 (Data Link)
• C. Layer 3 (Network)
• D. Layer 4 (Transport)

Answer: (B)

Standards for how data is formatted, addressed, and accessed on a local network live at the Data Link layer. This layer defines the frame structure, MAC addressing, error detection within a single hop, and how devices share the same medium—think Ethernet and Wi‑Fi conventions under IEEE 802 standards. Those rules govern local communication and switching between devices on the same LAN. In contrast, the Physical layer handles signaling on the medium, Layer 3 deals with routing and IP addressing between networks, and Layer 4 covers end-to-end transport protocols like TCP and UDP. So the material places network standards at the Data Link layer because that’s where frame-level definitions and local access methods are specified.

Standards for how data is formatted, addressed, and accessed on a local network live at the Data Link layer. This layer defines the frame structure, MAC addressing, error detection within a single hop, and how devices share the same medium—think Ethernet and Wi‑Fi conventions under IEEE 802 standards. Those rules govern local communication and switching between devices on the same LAN. In contrast, the Physical layer handles signaling on the medium, Layer 3 deals with routing and IP addressing between networks, and Layer 4 covers end-to-end transport protocols like TCP and UDP. So the material places network standards at the Data Link layer because that’s where frame-level definitions and local access methods are specified.