Can you give examples of network protocols used in different layers of the OSI model?

In the OSI model, network protocols are divided into seven layers. Here are examples of protocols used at different layers:

• Physical Layer (Layer 1): Ethernet (defines electrical and physical characteristics of data transmission), USB
• Data Link Layer (Layer 2): Ethernet (MAC addressing), PPP (Point-to-Point Protocol), ARP (Address Resolution Protocol)
• Network Layer (Layer 3): IP (Internet Protocol), ICMP (Internet Control Message Protocol), OSPF (Open Shortest Path First)
• Transport Layer (Layer 4): TCP (Transmission Control Protocol), UDP (User Datagram Protocol)
• Session Layer (Layer 5): NetBIOS, PPTP (Point-to-Point Tunneling Protocol)
• Presentation Layer (Layer 6): SSL/TLS (encryption), MIME (message formatting)
• Application Layer (Layer 7): HTTP, FTP, SMTP, DNS

For example, HTTP operates at the application layer, TCP at the transport layer, IP at the network layer, and Ethernet at the data link and physical layers.

This division helps to understand how data passes through different levels of network interaction.