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