background image
64 Chapter 3: Assembling and Cabling the WAN Components
Scenario Answers
The answers provided in this section are not necessarily the only possible correct answers. They
merely represent one possibility for the scenario. The intention is to test your base knowledge
and understanding of the concepts discussed in this chapter.
Should your answers be different (as they likely will be), consider the differences. Are your
answers in line with the concepts of the answers provided and explained here? If not, go back
and read the chapter again, focusing on the sections related to the problem scenario.
Scenario 3-1 Answers
1
For the growing central site, with 100+ users, it can be necessary to implement a 7200
router or higher. A 3640 could certainly handle the job. However, care must be taken in
regards to future growth. If the site has few or no plans for growth in the near future, the
3640 is a good choice. The branch office site with only 10 users could function with a
1700, 2600, or similar router. The SOHO site with a single user will likely use ISDN for
connectivity and a 1004 or 700 router.
2
For the central site connecting to the branch site, a single dedicated circuit can be
implemented. If future sites are to be added, Frame Relay can be appropriate. According
to Figure 3-7, there is a secondary connection between the central and branch sites.
Secondary connections are typically ISDN. The SOHO site shows connectivity to the
same cloud as the secondary central-to-branch connection. Also, with the selection of a
700 or 1004 router, the obvious connectivity choice is ISDN.