TCIP/IP layers

Question 1

What do the TCP/IP layers do?

Answer 1

Define the rules relating to transmission of packets.
IP controls delivering of packets
TCP keeps track of them and reassembles them

Question 2

What are the 4 layers of the TCP/IP model?

Answer 2

Link
Internet
Transport
Application

Question 3

What does the Application layer do?

Answer 3

Handles DNS and other protocols

Data is converted from one format to another so it is understandable for recipient.

Question 4

What does the Transport Layer do?

Answer 4

Contains most of the config instructions and data associated with correct transmission and error checking.
Sender and receiver are identified.
Port numbers are identified so that data is passed to the correct app.

Question 5

What does the Internet layer do?

Answer 5

Defines IP addresses for devices sending and receiving as well as the routing of data.

Question 6

What does the Link layer do?

Answer 6

Sychronisation of devices
Defines network topology
Handles data transmission
Controls CSMA/CA

Question 7

What gets added to the data being sent at the Transport layer?

Answer 7

The transport header defining which packet of data it is. 1st, 2nd, 3rd etc and port number

Question 8

What gets added to the data being sent at the Internet layer?

Answer 8

IP address of devices

Question 9

What gets added to the data being sent at the Link layer?

Answer 9

MAC address of devices