Term
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Definition
Layer 7
Provide user interface to send and receive the data
MS-Word, Adobe-Photoshop, VLC, SSH, FTP, TFTP, SMTP, HTTP etc |
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Term
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Definition
Layer 6
Encrypt, format and compress the data for transmission
BMP, GIF, JPEG, WAV, AVI etc |
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Term
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Definition
Layer 5
Initiate and terminate sessions with remote system
NetBIOS, Tunneling, PAP (Password Authentication Protocol), PPTP (Point-to-Point Tunneling Protocol) etc |
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Term
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Definition
Layer 4
Break data stream in smaller segments and provide reliable and unreliable data delivery
TCP, UDP, Multiplexing |
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Term
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Definition
Layer 3
Provide logical addressing
Router, Managed Switch, IP address |
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Term
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Definition
Layer 2
Prepare data for transmission
MAC, Ethernet, LLC (Layer Link Control) |
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Term
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Definition
Layer 1
Move data between devices
Cables, NIC, CSU/DSU, connectors |
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