The following scenario and questions are designed to draw together the content of the chapter and exercise your understanding of the concepts. There is not necessarily a right answer. The thought process and practice in manipulating the concepts is the goal of this section. The answers to the scenario questions are found at the end of this chapter.
This scenario concentrates on correcting an addressing scheme in the company discussed in Chapter 2, CyberKit. A network administrator devised the addressing scheme before there was any intention of connecting the company to the Internet and before the company had regional offices. Addresses were subsequently allocated without any policy or administrative control. This has led to problems in the current organization, which now needs to summarize its addresses. Using the addressing scheme in Figure 3-9, answer the following questions.
Figure 3-9. An Addressing Scheme for Scenario 3-1
There are serious problems with the addressing scheme in Figure 3-9. If the network had this addressing scheme, would summarization be possible?
Design an alternative addressing scheme using VLSM that would summarize to the regional level.
Write out the addressing scheme in both binary and dotted decimal notation.
Could these addressing requirements be achieved with a Class C address?
If the answer to the preceding question is yes, write out the dotted decimal and binary notation to support it. If the answer is no, how many Class C addresses would be required? (Again, write out the dotted decimal and binary notation to support your argument.)