OSI Model

Question 1

What are the layers of the OSI model?

Answer 1

Physical, Data Link, Network, Transport, Session, Presentation, Application

Question 2

What comprises the Physical layer?

Answer 2

Hubs, cables, radiowaves, physical parts

Question 3

What comprises the Data Link layer?

Answer 3

MAC addresses, switches, NICs

Question 4

Which layer has two sublayers? What are they?

Answer 4

Data Link has two sublayers: Logical Link Control, and Media Access Control

Question 5

What does the LLC sublayer do?

Answer 5

Talks to OS, provides flow control, handles multiple network protocols

Question 6

What does the Media Access Control sublayer do?

Answer 6

Creates and addresses the frame, adds or checks FCS, ensures that frames are sent along the cable

Question 7

What makes up the Network layer?

Answer 7

Packets and IP addresses, routers

Question 8

What does the Transport layer do?

Answer 8

Assembly & disassembly of data, chopping up data to fit multiple packets (segments or datagrams)

Question 9

What does the Session layer do?

Answer 9

Handles a system’s sessions

Question 10

What does the Presentation layer do?

Answer 10

Translates data from lower layers into a usable/readable format for Application layer