CH3: OSI Layers, Devices, and Protocols

Question	Answer
Layer 1 Layer Name? Devices? Protocols?	Physical Layer Cables, hubs Ethernet, cabling protocols
Layer 2 Layer Name? Devices? Protocols?	Data Link Layer Switches MAC, ARP, NDP, VLANs
Layer 3 Layer Name? Devices? Protocols?	Network Layer Router, Layer 3 switch IPv4, IPv6, IPsec, ICMP
Layer 4 Layer Name? Devices? Protocols?	Transport Layer N/A TCP, UDP
Layer 5 Layer Name? Devices? Protocols?	Session Layer N/A N/A
Layer 6 Layer Name? Devices? Protocols?	Presentation Layer N/A N/A
Layer 7 Layer Name? Devices? Protocols?	Application Layer Proxies, application proxy firewall, web application firewalls, web security gateways, UTM security appliances DNS, FTP, FTPS, HTTP, HTTPS, IMAP4, LDAP, POP3, RDP, SCP, SFTP, SMTP, SNMP, SSH, Telnet, TFTP

Resource summary

	Created by Brent Jerdo almost 10 years ago