A network administrator is troubleshooting a connectivity issue and suspects the problem is related to the physical cabling. At which layer of the OSI model should the administrator begin their investigation?
Trap 1: Transport layer
The Transport layer is responsible for end-to-end communication and segmentation, not physical cabling.
Trap 2: Data Link layer
The Data Link layer handles framing and MAC addressing, but not the physical medium itself.
Trap 3: Network layer
The Network layer handles logical addressing and routing, not physical connections.
- A
Transport layer
Why wrong: The Transport layer is responsible for end-to-end communication and segmentation, not physical cabling.
- B
Data Link layer
Why wrong: The Data Link layer handles framing and MAC addressing, but not the physical medium itself.
- C
Physical layer
The Physical layer defines the electrical, mechanical, and procedural interface to the transmission medium, making it the correct layer for cabling issues.
- D
Network layer
Why wrong: The Network layer handles logical addressing and routing, not physical connections.