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15 cards from this deck
4 distinct layers
Top layer where users interact with network services
Web browsers request web pages from servers
Uses SSL encryption to protect communications
Transfers files between computers
Sends emails from one server to another
TCP and UDP
Provides reliable, ordered delivery of data
IP (Internet Protocol)
Handles addressing and routing of data packets
Wi-Fi and Ethernet
Data wrapped with additional info as it moves down layers
Down the layers
Each layer can be changed without affecting others
Establishes communication between two hosts
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