OSI 7-layer

Question 1

APPLICATION layer

Answer 1

Human-computer interaction layer, where applications can access network services

Question 2

PRESENTATION layer

Answer 2

ensures that data is in usable format and where data encryption occurs

Question 3

SESSION layer

Answer 3

maintains connections & is responsible for controlling ports & sessions

Question 4

TRANSPORT layer

Answer 4

transmits data using transmission protocols inc TCP and UDP

Question 5

NETWORK layer

Answer 5

decides which physical path data will take

Question 6

DATALINK layer

Answer 6

defines format of data on network

Question 7

PHYSICAL layer

Answer 7

transmits raw bit stream over physical medium