N10-005 · Question #509
A technician finds that the network card is no longer functioning. At which of the following OSI layers is the problem occurring?
The correct answer is A. Layer 1. A failed network card (NIC) represents a physical hardware failure, which corresponds to Layer 1 - the Physical layer of the OSI model. Layer 1 governs the physical transmission medium and hardware components including NICs, cables, hubs, and connectors. While a NIC also…
Question
A technician finds that the network card is no longer functioning. At which of the following OSI layers is the problem occurring?
Options
- ALayer 1
- BLayer 3
- CLayer 5
- DLayer 7
How the community answered
(24 responses)- A92% (22)
- B4% (1)
- D4% (1)
Explanation
A failed network card (NIC) represents a physical hardware failure, which corresponds to Layer 1 - the Physical layer of the OSI model. Layer 1 governs the physical transmission medium and hardware components including NICs, cables, hubs, and connectors. While a NIC also participates at Layer 2 (Data Link) for MAC addressing, a complete hardware failure of the card is classified as a Layer 1 (Physical) problem because the device can no longer establish or maintain a physical connection. Layer 3 is the Network layer (IP routing), Layer 5 is the Session layer, and Layer 7 is the Application layer - none of which describe physical hardware.
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