1 - Flow of OSI LAYERS

Question 1

Application - Scribe

Answer 1

This Layer provides Network services to the PC.
Http, Web server, Mail server etc

Scribe is the one who writes the message

Question 2

Presentation - Translator

Answer 2

Formats Data to the correct format so it can be read properly on the other side.

It can encrypt, decrypt and format data before sending down the protocol track

Question 3

Session - Schmoozer

Answer 3

schmoozer - Negotiate communication

Manages and terminates session between Applications

Question 4

Transport - Middle manager

Answer 4

In charge of transportation.
Tracks Data - makes sure receipt is received of delivery.
End to end communication.

TCP - UDP

Ports are used to to track sessions.

Question 5

Network - Mail room guy

Answer 5

Is responsible for adding which street, which door Number. ( Source ip, destination ip )
To send via which path ?

Ip address and router.
Logical address and path selection.

Question 6

Data Link - Envelope guy

Answer 6

Controls the formatting of frames before they are transmitted.

This layer uses Frame check sequence ( FCS )

Frame/ framing - Mac address

Question 7

Physical - Truck

Answer 7

Electrical signal - transfer of electrical signal (bits)