Activity 7.2: Calculating Network Bandwidth

The Wingtip Toys company has hired you to administer its Web site, which is located on an unswitched Ethernet LAN. In the past users have often had trouble accessing the company’s Web site. You want to determine the network cost per user. You plan to do this by first determining the cost per operation. You decide to start with the Add Item operation.

Table 7.10 provides the parameters you should use when calculating Web usage.

Table 7.10 Network Usage Information for Add Item Operation

Type of Information	Details
Usage profile operations per second	0.003804
Web network cost	4.297
Data network cost	119.36

1. Your first step is to determine the cost per user for the Web server. How do you calculate that cost?
2. Next you must determine the cost per user for the data server. How do you calculate that cost?
3. How do you calculate the total cost per user per second?