Reference Models

Question 1

OSI Model:
List seven layers of the OSI Reference Model

Layer 7: 
Layer 6: 
Layer 5: 
Layer 4: 
Layer 3: 
Layer 2:
Layer 1:

Answer 1

Layer 7: Application
Layer 6: Presentation
Layer 5: Session
Layer 4: Transport
Layer 3: Network
Layer 2: Data Link
Layer 1: Physical

Question 2

Protocol Data Unit
Transport \_\_\_1\_\_\_\_.
Network \_\_\_2\_\_\_\_.
Data Link \_\_\_3\_\_\_\_.
Physical \_\_\_4\_\_\_\_.

Answer 2

1) In Segments
2) In Packets
3) In Frames
4) In Bits

Question 3

The TCP/IP Stack:
List 4 layers in TCP/IP Stack:
1) \_\_\_\_\_\_\_.
2) \_\_\_\_\_\_\_.
3) \_\_\_\_\_\_\_.
4) \_\_\_\_\_\_\_.

Answer 3

1) Application
2) Transport
3) Internet
4) Network Interface

Question 4

OSI model:
Layer 1 - _______.
Physical topologies: __1__, __2___, and ____3___

Answer 4

Layer 1 - Physical
Physical topologies: 
1) Bus
2) Ring
3) Star

Question 5

OSI model:
Layer 2 - _______
1) What the physical addressing is in Layer 2?
2) What the logical topologies are in Layer 2?
3) What the connection services are in Layer 2?

Answer 5

Layer 2 - Data Link

1) MAC
2) Bus and Ring
3) flow control and error control