Question

Which of the following reside(s) at the physical layer of the OSI model? (Select all that apply)

1) Router
2) Hub
3) Switch
4) Network cabling
5) Bridge

Answer 1

The physical layer of the OSI model includes network cabling, hubs, and switches.

Step-by-step explanation:

The following options reside at the physical layer of the OSI model:

• Network cabling: Network cabling refers to the physical medium that connects devices in a network. Examples of network cabling include twisted pair cables, fiber optic cables, and coaxial cables.
• Hub: A hub is a network device that operates at the physical layer. It receives data from one device and broadcasts it to all connected devices. However, hubs are less commonly used in modern networks.
• Switch: A switch is a network device that operates at the data link layer (layer 2) of the OSI model. It forwards data packets between devices based on their MAC addresses. However, switches also have physical layer components, such as network ports and connectors.