1.3.3 Networks

Question 1

Explain why protocols are important on a network (2)

Answer 1

• Allowing them to communicate
• by ensuring all devices follow the same rules
• so they interpret data/signals in the same way

Question 2

4 layers of the TCP/IP stack

Answer 2

• Application
• Transport
• Internet
• Link

Question 3

Name three protocols that may be used in LAN

Answer 3

HTTP,HTTPS
TCP,IP
UDP,IMAP

Question 4

Explain why protocol layering is used

Answer 4

Modularity: By breaking the complex process of networking into more manageable layers, it’s easier to design, implement, and troubleshoot networks

Interoperability: Layering allows different technologies to work together seamlessly.

Ease of Updates: With a layered model, changes can be made to one layer without affecting others. This makes updates and improvements easier to implement

Specialisation: Each layer can be specialised to perform its functions without worrying about the specifics of other layers. This allows for more effective and efficient design