1. Why is it important to use a structured, systematic method for designing networks? What problems can occur if such methods are not used?
2. Compare and contrast the top-down network design method shown in Figure 1-1 with the PDIOO method shown in Figure 1-2.
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![1104_f6df3c34-3485-46e4-b529-1cf2622ec881.png](https://secure.tutorsglobe.com/CMSImages/1104_f6df3c34-3485-46e4-b529-1cf2622ec881.png)