Question

Network layer protocols provide a logical communication between hosts, whereas transport layer protocols provide a logical communication between processes running on these hosts. To help you understand these concepts, please read the following and answer the simple questions. Consider two houses on the east and west side, with each house being home to some kids. The kids of the west household are cousins of the kids in the east household. Each kid writes each cousin every week a letter, with each letter delivered by postal service in a separate envelope. In each household is one kid – Ann in the west house, Bill in the east house – responsible for mail collection and mail distribution.

1. What are the names of five layers on the Internet stack?

2. In the above scenario, who provides the logical communication between the houses? Which layer on the Internet stack is this entity equivalent to?

3. Who provides the logical communication between the cousins in the two houses? Which layer on the
Internet stack is this entity equivalent to?

Answer 1

1. What are the names of five layers on the Internet stack?
Five layers of Internet Protocol is given below:
1. Application Layer
2. Transport Layer
3. Internet Layer
4. Network Layer
5. Physical Layer

2. In the above scenario, who provides the logical communication between the houses? Which layer on the Internet stack is this entity equivalent to?
The network layer does this action. It helps to connect with multiple houses.

3. Who provides the logical communication between the cousins in the two houses? Which layer on the
Internet stack is this entity equivalent to?
The transport layer makes sure it reaches between sender and receiver.