200-150 · Question #87
Which two layers of the OSI model are combined in the Internet protocol suite network access layer? (Choose two.)
The correct answer is A. 1 B. 2. The TCP/IP network access layer merges the OSI Physical layer (Layer 1) and Data Link layer (Layer 2), covering both hardware transmission and local frame delivery.
Question
Which two layers of the OSI model are combined in the Internet protocol suite network access layer? (Choose two.)
Options
- A1
- B2
- C3
- D4
- E5
- F6
- G7
How the community answered
(50 responses)- A92% (46)
- C4% (2)
- E2% (1)
- G2% (1)
Why each option
The TCP/IP network access layer merges the OSI Physical layer (Layer 1) and Data Link layer (Layer 2), covering both hardware transmission and local frame delivery.
OSI Layer 1 (Physical) is folded into the TCP/IP network access layer, which encompasses the hardware-level transmission of raw bits over physical media including cables, fiber, and wireless signals.
OSI Layer 2 (Data Link) is folded into the TCP/IP network access layer, which also handles framing, MAC addressing, and error detection for local network delivery.
OSI Layer 3 (Network) maps to the TCP/IP Internet layer, which handles IP addressing and packet routing between networks.
OSI Layer 4 (Transport) maps to the TCP/IP Transport layer, handling end-to-end communication via TCP and UDP.
OSI Layer 5 (Session) maps to the TCP/IP Application layer, which consolidates OSI Layers 5, 6, and 7.
OSI Layer 6 (Presentation) maps to the TCP/IP Application layer, not the network access layer.
OSI Layer 7 (Application) maps to the TCP/IP Application layer, which represents the highest abstraction in the TCP/IP model.
Concept tested: TCP/IP model to OSI model layer mapping
Source: https://www.cisco.com/c/en/us/support/docs/ip/routing-information-protocol-rip/13769-5.html
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