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Layer 1
Cable: Ethernet cable, coaxial cable, fiber optic cable
Wireless Things: Bluetooth and Wi-Fi
Infrastructure Device: Hubs, access point, media converters
Layer 2
Network interface card, bridges, and switch, MAC address
Layer 3
Routers and multilayer switches
IPv4 and IPv6
ICMP Internet Control Message Protocol
Layer 4
TCP and UDP
WAN accelerator
Load balancers and firewalls
Layer 5
H.323 and NetBIOS
Layer 6
Scripting languages
Standard text
Pictures
Movie files
Encryption algorithms
Layer 7
Email application- POP3, IMAP, and SMTP
Web browsing- HTTP and HTTPS
Domain Name Service- DNS
File Transfer Protocol- FTP, FTPS, and SFTP
Remote access- Telnet, SSH, and SNMP