OSI Model and TCP/IP Model

Question 1

What are the 7 Layers of OSI?

Answer 1

Physical, Data Link, Network, Transport, Session, Presentation, Application.
(Please Do Not Throw Stale Pizza Away)

Question 2

OSI Layer 1

Answer 2

Physical - Deals with how to signal other devices (eg. electrical, optical, radio waves)

Question 3

OSI Layer 2

Answer 3

Data Link - Deals with technology used to communicate, local source and destination addressing i.e. MAC for Ethernet

Question 4

OSI Layer 3

Answer 4

Network - Determines how to communicate, uses source and destination IP addresses to track devices

Question 5

OSI Layer 4

Answer 5

Transport - Ensures delivery to correct process, uses source and destination ports to track processes

Question 6

OSI Layer 5

Answer 6

Session - Establish, maintain, reset and terminate communication

Question 7

OSI Layer 6

Answer 7

Presentation - Formats data to be placed on the network

Question 8

OSI Layer 7

Answer 8

Application - It is the interface to the network or OSI Model

Question 9

What are the 4 Layers of TCP/IP?

Answer 9

Network Access Layer, Internet Layer, Transport Layer, Application Layer

Question 10

Network Access Layer

Answer 10

TCP/IP Layer 1 - Ethernet

Controls the hardware devices and media that make up a network

Question 11

Internet Layer

Answer 11

TCP/IP Layer 2 - IP

Determines the best path through the network

Question 12

Transport Layer

Answer 12

TCP/IP Layer 3 - TCP and UDP

Supports communication between diverse devices across diverse networks

Question 13

Application Layer

Answer 13

TCP/IP Layer 4 - DNS and HTTP

Represents data to the use, plus encoding and dialog control