How many layers are defined within the US Department of Defense (DoD) TCP/IP Model?

The correct answer is C. 4. The DoD TCP/IP model (also called the Internet model) defines 4 layers: (1) Network Access layer (handles physical and data link functions), (2) Internet layer (handles logical addressing and routing), (3) Host-to-Host Transport layer (handles end-to-end communication), and (4)…

Submitted by devops_kid· Apr 18, 2026Network and Communications Security

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4% (1)
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4% (1)
C
92% (24)

Explanation

The DoD TCP/IP model (also called the Internet model) defines 4 layers: (1) Network Access layer (handles physical and data link functions), (2) Internet layer (handles logical addressing and routing), (3) Host-to-Host Transport layer (handles end-to-end communication), and (4) Application layer (handles user-facing protocols and services). This is a simplified model compared to the OSI model's 7 layers.

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#TCP/IP Model#DoD Model#Network Architecture#Networking Fundamentals

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