N10-005 · Question #889
The components of a NIC function at which of the following layers of the OSI model? (Select TWO).
The correct answer is A. Layer 1 B. Layer 2. A NIC operates at both the Physical layer (Layer 1) for electrical signaling and the Data Link layer (Layer 2) for MAC addressing and framing.
Question
The components of a NIC function at which of the following layers of the OSI model? (Select TWO).
Options
- ALayer 1
- BLayer 2
- CLayer 3
- DLayer 4
- ELayer 5
How the community answered
(33 responses)- A91% (30)
- C3% (1)
- D6% (2)
Why each option
A NIC operates at both the Physical layer (Layer 1) for electrical signaling and the Data Link layer (Layer 2) for MAC addressing and framing.
Layer 1 (Physical) is where the NIC handles the actual transmission and reception of raw bit streams over the physical medium, including electrical signals, voltages, and connectors.
Layer 2 (Data Link) is where the NIC operates using its burned-in MAC address to frame data into Ethernet frames and control access to the physical medium via MAC sublayer protocols.
Layer 3 (Network) is handled by the router or the IP stack in the OS, not the NIC hardware itself.
Layer 4 (Transport) is managed by the OS transport protocols such as TCP and UDP, not the NIC.
Layer 5 (Session) manages communication sessions between applications and is implemented in software, not NIC hardware.
Concept tested: NIC operation across OSI Physical and Data Link layers
Source: https://learn.microsoft.com/en-us/windows-hardware/drivers/network/ndis-drivers
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