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OSI and TCP IP Model Layers

Cisco CCNA 200-301 PBQ

Match OSI and TCP/IP model layer names to their core functions, services, and associated protocols to reinforce an understanding of each layer’s responsibilities.


End-to-end communication with TCP or UDP
Frames data and implements MAC addressing
Uses logical addresses (IP) for routing
Transmission of raw bits over a medium
Provides protocols for user-facing applications
Performs data translation and encryption
Handles IP routing across networks
Implements high-level protocols like HTTP and SMTP
Combines OSI Physical and Data Link functions
Establishes and maintains dialogs between hosts
Ensures reliable or best-effort delivery
Application Layer
Transport Layer
Internet Layer (TCP/IP)
Network Access Layer (TCP/IP)
Transport Layer (TCP/IP)
Network Layer
Application Layer (TCP/IP)
Data Link Layer
Presentation Layer
Session Layer
Physical Layer