7 layer osi model

Question 1

define physical layer

Answer 1

transmission of data across a physical medium (eg between computers or networks)

Question 2

define data link layer

Answer 2

this layer is responsible for error detection/correction and a process called framing (packaging data received from the network layer)

Question 3

define network layer

Answer 3

is responsible for setting up the routing of a data packet and ensuring they’re the correct size

Question 4

define transport layer

Answer 4

this layer determines which network protocol to follow e.g. UDP, TCP

Question 5

what does UDP and TCP do

Answer 5

TCP is concerned with the reliability of data
UDP is concerned with the speed of data transmission

Question 6

define session layer

Answer 6

establishes the connection between the sender and receiver. it also determines formal maintenance of connection (when to terminate connection and what to do if connection is suddenly lost

Question 7

define presentation layer

Answer 7

is responsible for encryption, encoding and compression of the data.

Question 8

application layer define now

Answer 8

facilitates the network connection for different applications.

Question 9

what is acronym for 7layer osi model

Answer 9

please do not touch steve’s pet alligator