The 4-layer TCP/IP Model (AQA GCSE Computer Science): Flashcards
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15 cards from this deck
How many layers in TCP/IP model?
How many layers in TCP/IP model?
4 distinct layers
Application layer position
Application layer position
Top layer where users interact with network services
HTTP function (Application layer)
HTTP function (Application layer)
Web browsers request web pages from servers
HTTPS security feature
HTTPS security feature
Uses SSL encryption to protect communications
FTP function (Application layer)
FTP function (Application layer)
Transfers files between computers
SMTP function (Application layer)
SMTP function (Application layer)
Sends emails from one server to another
Two main Transport layer protocols
Two main Transport layer protocols
TCP and UDP
TCP protocol characteristic
TCP protocol characteristic
Provides reliable, ordered delivery of data
Key Internet layer protocol
Key Internet layer protocol
IP (Internet Protocol)
IP protocol function
IP protocol function
Handles addressing and routing of data packets
Link layer protocols (2 examples)
Link layer protocols (2 examples)
Wi-Fi and Ethernet
What happens during encapsulation?
What happens during encapsulation?
Data wrapped with additional info as it moves down layers
Direction data flows when sending
Direction data flows when sending
Down the layers
Layered approach advantage
Layered approach advantage
Each layer can be changed without affecting others
Transport layer function
Transport layer function
Establishes communication between two hosts