Exam-style question
Try this first
Explain how routing is achieved across the Internet when a message is sent from one network to another. Include the roles of packets and routers in your answer.
Model answer
What a good answer should say
- The message is divided into packets.
- Each packet contains addressing information in its header, along with the data being transmitted.
- Routers examine the addressing information and forward packets between networks towards their destinations.
- Because the Internet is made from interconnected networks, packets may pass through several routers before reaching the destination network.
Explanation
Why this works
A strong answer links packet switching to routing. It should explain that packets carry addressing information and that routers forward them between networks, allowing communication across the structure of the Internet.
Common mistake
No common mistake is linked to this question yet.