the Unit 4 assignment you learned about a complex international

Assignment

PKI Selection Options

In the Unit 4 assignment you learned about a complex international organization that had some unsecure account management practices. Following the audit, the board and executives made the decision to consider implementing a PKI system that would require all internal communication to be done using some form of encryption keys. You have been hired to inform the board as to the alternatives available and the benefits and challenges of those solutions.

Use the study materials and engage in any additional research needed to fill in knowledge gaps. Write a 3-4 page paper that addresses the following:

• What are the options available to a large global organization to meet their goal of implementing some form of PKI?
• What are the points of risk or challenge about which the board and executives should be aware in making their decisions?
• In what way might a PKI implementation improve the risk or add benefit to the technology and security profile of the organization?

Assignment Requirements

• Written communication: Written communication is free of errors that detract from the overall message.
• APA formatting: Resources and citations are formatted according to APA (sixth edition) style and formatting.
• Length of paper: 3-4 pages, excluding the references page.
• Font and font size: Times New Roman, 12 point.

Assignment 2

1. Let us assume that we have a CSMA/CD network with n stations. For any time slot, the probability that a station has a frame to send is p. Now the question is what is the probability that a time slot is used successfully (with no collision)?
(Hint: use Bernolli Trials to solve this problem)

2. Consider a slotted ring of length 20 km with a data rate of 100 Mbps and 1000 repeaters, each of which introduces a 1-bit delay. Each slot contains room for one source address byte, one destination address byte, two data bytes, and 8 control bits for a total length of 40 bits. How many slots are on the ring?

3. Imagine a LAN with a bus topology in which each station is given permission to send a fixed-size frame. However, other stations are not allowed to send data until this frame reaches the destination. What is the efficiency of this LAN?
Assume:
Medium length = 10,000 m
Capacity = 10 Mbps
Propagation speed = 200,000,000 m/s
Frame length = 100 bits

4. Numerically Calculate the efficiency of a typical CSMA/CD using the following information:
Medium length = 5000 m
Capacity = 100 Mbps
Propagation speed = 200,000,000 m/s
Frame length = 1000 bits

5. Calculate (Numerically) the efficiency of a Token Ring network using the following information:
Medium length = 3000 m
Number of stations: 100
Capacity = 16 Mbps
Propagation speed = 200,000,000 m/s
Frame length = 8000 bits

Assignment 3

Assignment Requirements

The Zertech Corporation has decided to increase their employees’ information security awareness. As Zertech’s IT Security Manager, the CISO has tasked you to find and compare three sources of information security awareness training. Write a professional memo to Mary Smith, the Chief Information Security Officer informing her of your analysis and recommendation.

1. Describe your task.
2. Discuss the three training options by comparing topics, cost, duration of training, and who provides the training (in-house or outsource).
3. Recommend one of the training options (and why) to Ms. Smith.
4. Include a signature block with your credentials

Submission Requirements

• Format: Microsoft Word Memo
• Font: Arial, 12-Point, Double- Space
• Citation Style: N/A
• Length: 1–2 pages

Assignment 4

Encryption Using File Streams

Part A

Complete the following questions:

Write C++ code to open a document with the name Hello.txt, place the message “Hello, World!” in the document, and exit the document. Re open the file you closed, and read the message into a string variable. Exit out of the file.
When do you open the file as an ifstream, as an ofstream, or as an fstream? Could you simply open all files as an fstream?
Why is the ifstream parameter of the read_data procedure in the previous question a reference parameter and not a value parameter?
What is the difference between a text file, and a binary file?
Part B

Random monoalphabet cipher.

The caeser cipher, which shifts all letters by a certain amount, is easy to decipher. Try this, instead of numbers use letters. Consider this, the word is FEATHER. Remove duplicate letters, making FEATHR, and append the rest of the letters of the alphabet in reverse order.

Now encrypt the letters as follows:

See exhibit A

Now, write a program that encrypts or decrypts a file using this cipher.

For example,

crypt ““d ““kFEATHER encrypt.txt output.txt

decrypts a file using the keyword FEATHER. You must always supply a keyword.

Submit a screenshot of the executed program and the code of the program.

Our website has a team of professional writers who can help you write any of your homework. They will write your papers from scratch. We also have a team of editors just to make sure all papers are of HIGH QUALITY & PLAGIARISM FREE. To make an Order you only need to click Ask A Question and we will direct you to our Order Page at WriteDemy. Then fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.