The document discusses different types of communication networks including simplex, half-duplex, and full-duplex networks. It also covers local area networks, metropolitan area networks, and wide area networks. The final term discussed is an internetwork, also known as the Internet, which connects multiple independent networks.

1. Figure 2-11 My notes for DataCom :: @nkur 

2. Figure 2-12 My notes for DataCom :: @nkur  Simplex

3. Figure 2-13 My notes for DataCom :: @nkur  Half-Duplex

4. Figure 2-14 My notes for DataCom :: @nkur  Full-Duplex

5. Figure 2-15 My notes for DataCom :: @nkur 

6. Figure 2-16 My notes for DataCom :: @nkur  Local Area Network

7. Figure 2-16-continued My notes for DataCom :: @nkur  Local Area Network

8. Figure 2-17 My notes for DataCom :: @nkur  Metropolitan Area Network

9. Figure 2-18 My notes for DataCom :: @nkur  Wide Area Network

10. Figure 2-19 My notes for DataCom :: @nkur  Internetwork (Internet)