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