Five Layer TCP/IP Network Model Layering is a common approach to tackling large problems in Computers. There are a few common ways of dividing responsibilities on the Internet. One of the most often used is the TCP/IP Five Layer Model. 1. Go online and read up on the TCP/IP Five Layer Model. In your own words write a brief description of the responsibilities of each layer. Figure 4.7 Host

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### Five Layer TCP/IP Network Model

Layering is a common approach to tackling large problems in computers. There are a few common ways of dividing responsibilities on the Internet. One of the most often used is the TCP/IP Five Layer Model.

1. **Research Task:**
   - Go online and read up on the TCP/IP Five Layer Model. In your own words, write a brief description of the responsibilities of each layer.

**Diagram: Routing Messages over the Internet**

- **Figure 4.7 Explanation:**
  - The Internet routes data packets over the network backbone from router to router to reach their destinations.
  - The diagram shows a network setup with two groups of host computers.
  - **Host Computer 1** and **Host Computer 2** are on **Network A**.
  - **Host Computer 3** and **Host Computer 4** are on **Network B**.
  - Between these networks are several **Router/Gateways**, which represent other networks on the internet and facilitate the routing of data.

2. **Scenario Analysis:**
   - Looking at the diagram, Host Computer 1 and 2 are on Network A, while Host Computer 3 and 4 are on Network B.
   - The Router/Gateways in between represent other networks on the internet.
   - If Host 1 is talking with Host 4 using VOIP or Chat, give an example of how each layer plays its part in the communication.
Transcribed Image Text:### Five Layer TCP/IP Network Model Layering is a common approach to tackling large problems in computers. There are a few common ways of dividing responsibilities on the Internet. One of the most often used is the TCP/IP Five Layer Model. 1. **Research Task:** - Go online and read up on the TCP/IP Five Layer Model. In your own words, write a brief description of the responsibilities of each layer. **Diagram: Routing Messages over the Internet** - **Figure 4.7 Explanation:** - The Internet routes data packets over the network backbone from router to router to reach their destinations. - The diagram shows a network setup with two groups of host computers. - **Host Computer 1** and **Host Computer 2** are on **Network A**. - **Host Computer 3** and **Host Computer 4** are on **Network B**. - Between these networks are several **Router/Gateways**, which represent other networks on the internet and facilitate the routing of data. 2. **Scenario Analysis:** - Looking at the diagram, Host Computer 1 and 2 are on Network A, while Host Computer 3 and 4 are on Network B. - The Router/Gateways in between represent other networks on the internet. - If Host 1 is talking with Host 4 using VOIP or Chat, give an example of how each layer plays its part in the communication.
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