OSI Model

OSI Model

graph TD
    subgraph OSI Model
        A[Layer 7: Application]
        B[Layer 6: Presentation]
        C[Layer 5: Session]
        D[Layer 4: Transport]
        E[Layer 3: Network]
        F[Layer 2: Data Link]
        G[Layer 1: Physical]
    end

    A --> B
    B --> C
    C --> D
    D --> E
    E --> F
    F --> G

TCP/IP Model

graph LR
    subgraph "OSI Model Layer"
        direction TB
        O1["Application, Presentation, Session"]
        O2[Transport]
        O3[Network]
        O4["Data Link"]
        O5[Physical]
    end

    subgraph "TCP/IP Model Layer"
        direction TB
        T1[Application]
        T2[Transport]
        T3[Internet]
        T4["Data Link"]
        T5["Physical Network"]
    end

    subgraph "TCP/IP Protocol Examples"
        direction TB
        P1["SMTP, HTTP"]
        P2["TCP, UDP"]
        P3["IP, ICMP"]
        P4["IEEE 802.2"]
        P5[Ethernet]
    end

    %% Define connections between corresponding layers
    O1 -- " " --o T1 -- " " --o P1
    O2 -- " " --o T2 -- " " --o P2
    O3 -- " " --o T3 -- " " --o P3
    O4 -- " " --o T4 -- " " --o P4
    O5 -- " " --o T5 -- " " --o P5