🛡️ Free practice test question from: OSI model (Security+)

→ Physical Layer: Deals with the physical connection between devices, such as cables and switches.

→ Data Link Layer: Manages node-to-node data transfer and handles error detection and correction from the physical layer (ATP, MAC address)

→ Network Layer: Responsible for packet forwarding, including routing through different routers. (IP Address, routing of packets)

→ Transport Layer: Ensures complete data transfer with error checking and data flow control. (TCP/UDP)

→ Session Layer: Manages sessions or connections between applications.

→ Presentation Layer: Handles data translation, encryption, and compression. When data arrives at this layer, any encryption is decrypted, and compression is reversed to ensure the data is in a usable format for the application layer.

→ Application Layer: Interfaces directly with the end-user applications. (HTTP, DNS, FTP, SMB, SMTP)

Given that the Presentation Layer is specifically tasked with reversing encryption and compression, it prepares the data for consumption by the application.