OSI Model Flashcards
1
Q
OSI
A
Open System Interconnection. OSI provides a standard for different computer systems to be able to communicate with each other.
2
Q
Layer 1
A
Physical. Transmits raw bit stream over the physical medium.
3
Q
Layer 2
A
Data Link. Defines the format of data on the network
4
Q
Layer 3
A
Network. Decides which physical path the data will take.
5
Q
Layer 4
A
Transport. Transmits data using transmission protocols including TCP and UDP
6
Q
Layer 5
A
Session. Maintains connections and is responsible for controlling ports and sessions.
7
Q
Layer 6
A
Presentation. Ensures the data is in a usable format and is where data encryption occurs.
8
Q
Layer 7
A
Application. Human-computer interaction layer where applications can access the network services.
