OSI Model and Protocols

Question 1

State two differences between TCP and UDP protocols as used in the Transport Layer of the OSI model.

Answer 1

Connection Establishment: TCP is connection-oriented and establishes a connection before data transfer, while UDP is connectionless.
Reliability: TCP ensures reliable and ordered delivery of data, while UDP provides faster but less reliable data transfer.

Question 2

State one primary function of each of the following layers of the OSI model:
(i) Presentation
(ii) Transport

Answer 2

(i) Presentation: Translates data between the application layer and lower layers, handling data format conversions.
(ii) Transport: Manages end-to-end communication, ensuring data integrity and flow control.

Question 3

Which layer of the OSI model uses MAC address for communication?

Answer 3

Layer 2 (Data Link Layer): Uses MAC addresses for communication within the same network or segment.