Case Study Answers Case Study 3 Medi Bill Services

1 Draw a topology map of the existing MediBill Services, Inc., network and a topology map of the proposed new network. Include in the proposed network the traffic flow of the e-mail system.

During your demonstration, you will present the client with a topology map of the existing network. Figure 8-2 shows a topology map of the existing network.

Figure 8-3 shows a topology map of the new network, including the traffic flow of the e-mail system.

2 What type of routed protocol will be used across the WAN to MediBill's customers?

The only routed protocol necessary is IP because all of MediBill's applications, including PC network management, are IP-compliant. The client's only other type of traffic will be Internet traffic, which is also IP-based. Many companies are looking to simplify their network by standardizing to one protocol.

3 What are the two main areas of management concern for the client based on its requirements?

Security management and network management

4 In your design, what type of testing would you recommend for this customer?

Mr. Lee wants a demonstration of the security that will be implemented. Considering that certain sites can receive Internet services, a pilot is the best solution. Mr. Lee needs to see a demonstration of the security only. The test can be conducted on a subset of the existing environment to test basic connectivity and security. This is particularly true because the remote doctor offices will be duplicates of the same design.

Figure 8-2 The Existing MediBill Services, Inc., Network

Modem

Workstations

DR Office 1

Modem

Modem

Workstations

Modem

Workstations

DR Office

Workstations

DR Office 2

Modem

Workstations

DR Office 3

Modem

Workstations

DR Office 5

Workstations

DR Office 4

Figure 8-3 The Proposed MediBill Services, Inc., Network with E-mail Traffic Flow

Internet Access " Router

SMTP

SMTP

Exchange Mail

5 During the scripting stage of the prototype testing development, a checklist of MediBill's services was requested. As the engineer in charge of the demonstration, list the Internet and application services MediBill will offer its customers so that you can develop a method for showcasing these applications.

Internet services include:

— File Transfer (FTP) Application services include:

— Network management (SMS)

— E-mail system (Exchange/Outlook)

6 What tool would you use during the pilot demonstration to show the effectiveness of the security solution?

You should use a protocol analyzer, such as Network Associate's Sniffer, which will demonstrate whether these packets are passing through the router or firewall to the other network. The Sniffer can also generate traffic such as pings to test an access list rule.

The case studies and questions in this chapter draw on your knowledge of all the CCDA exam objectives. Use these exercises to solidify your mastery of the objectives, as well as to identify areas you still need to review for the case study portion of the exam.

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