can someone please help me with this exam

This is consists of four questions. The questions are designed to test your understanding of certain concepts that were studied over the course of the semester. Please answer all questions on this document by typing your answer under the question. I have listed each question on a separate page for clarity.

Although you should be able to answer the question on its own page, if you have to flow over into another page that is fine. When completed post the final document to the appropriate drop box in the course shell.

Question 1

You may use any resources you want to complete each question in sufficient detail.

a.) How many customers can the ISP serve in San Antonio?

b.) How many customers can the ISP serve in Houston, combining the capacity of all the subnets?

c.) If the two /20 Houston subnets are merged together, what is the subnet address of the resulting network?

After deploying the network as shown in the case, the ISP experienced slow customer growth in Dallas and Austin, but high customer growth in San Antonio and Houston. To accommodate these growth patterns, the ISP pulled some of the /24 subnets from Dallas and Austin and allocated them to San Antonio and Houston.

d.) What are the /24 subnets that comprise the Dallas /21 subnet? (Hint: there are 2²⁴ - 2²¹ = 2³ = 8 such subnets)

e.) What are the /24 subnets that comprise the Austin /21 subnet?

Question 2

Among the processes at a retailer that can be managed by IT are merchandise planning, sourcing, distribution, and store operations. Pick one of these processes and use any information sources available to define it. Then give an example of how IT can be used to manage this process, concentrating chiefly on the role that computer networks play.

Question 3

Assume you are using the 192.168.0.0/16 address block to create subnets for a typical medium-sized business with about 2000 employees.

a.) You need to provide a subnet for each major department in the business. Assuming the business has a typical organization structure for a business this size, list the different subnets you would like to set up for the business. (Hint: you may have to go online and look at small business department structures to get an idea of the departments you need to provide for. You must have a minimum of 7 departments).

b.) How many bits would you need in the subnet ID to provide the required number of subnets?

c.) How many host IDs would be available in each subnet in your design?

d.) Present your results in the following table (See table 9.3 on Page 309 of the textbook as ab example). Note: you will have as many rows as departments you have included in your answer.

Department

Subnet Address (binary)

Subnet address (decimal)

Question 4

Briefly describe how you can use asymmetric key encryption to ensure the confidentiality of outgoing information. Clearly show the sender, receiver, and how the two keys are used to provide confidentiality.