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)