chapter 2 Flashcards
1
Q
What is OSI
A
Open System Interconnection
2
Q
How many layers are in OSI
A
7 layers
- Application
- Presentation
- Session
- Transport
- Network
- Data Link
- Physical
3
Q
Functionality of Application
A
- closest to user
- allow network access in this layer
4
Q
Functionality of Presentation
A
- make data readable in lower layers
- encryption
- translation = sender - common - receiver
- compression = reduce bits
5
Q
Functionality of Session
A
- manages & terminates sessions
- sufficient data transfer during sessions
- checkpoints
6
Q
Functionality of Transport
A
- segmentation of data into packet size
- flow control = optimize transfer rate
- error control = ensure completion of data transfer
7
Q
Functionality of Network
A
- determining the shortest path
- header consists source & destination address
8
Q
Functionality of Data Link
A
- convert packets into frames
- flow & error control
- network typology
9
Q
Functionality of Physical
A
- wires, cables, routers, switches
- convert frames into bits
