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Encryption is an important aspect of computer security. For this discussion, you are to research Advanced Encryption Standard (AES) and the Data Encryption Standard (DES) algorithm.

1. Answer the questions in full paragraphs. Enter the information on the discussion forum (Do not attach any documents). 
2. Cite your sources

Develop your research on the following items (items 1-7 equals 70% of the grade and item 8 equals 30% of the grade):

1. Define and explain Advanced Encryption Standard
2. Define and explain Data Encryption Standard
3. Define and explain Symmetric cryptography
4. Define and explain Asymmetric cryptography
5. Define and explain Symantec
6. Answer the questions in full paragraphs
7. Cite your sources

Computer and Number Systems

1.  You have been hired to develop a website-based sales system for a large international retail firm. List and describe at least four features that are specific to the Web design of your system and customer service important to consider if your system is to be successful at attracting and keeping customers living outside of the US. Include not only characteristics of the user interface, but those issues that must be uniquely addressed to successfully service your non-US customers.

2.  In order to receive credit for these problems, you must show all of the steps you took to arrive at your answers.

(c) Convert the following decimal number to binary:

(d) Convert the following binary number to decimal:

(c) Convert the following hexadecimal number to decimal:

(d) Convert the following binary number to hexadecimal:

CPU and Memory

3. ASCII, Unicode, and EBCDIC are, of course, not the only numeric / character codes. The Sophomites from the planet Collegium use the rather strange code shown in the Figure below. There are only thirteen characters in the Sophomite alphabet, and each character uses a 5-bit code. In addition, there are four numeric digits, since the Sophomites use base 4 for their arithmetic. Given the following Sophomite sequence, what is the corresponding binary message being sent by the Sophomites?

4. Define memory cache write-through and write-back techniques and describe the advantages and disadvantages of each.

Input / Output

5. Answer the follow questions about interrupts.

a. Describe in detail the steps that occur when a system receives an interrupt.

b. Describe how these steps differ in the case when a system receives multiple interrupts

Computer Systems

6.  Answer the following questions about clusters.

a. Describe how you might use a cluster to provide fault-tolerant computing

b. Describe how you might use a cluster architecture to provide rapid scalability for a Web-based company experiencing rapid growth.

7.  Answer the following questions about communication protocols.

a. Using the operations of UDP (User Datagram Protocol) and TCP (Transmission Control Protocol) as a basis, carefully explain the difference between connectionless and connection-oriented communication.

b. If you were ordering a number of items from an online seller, such as amazon.com, which Protocol (TCP or UDP) would you recommend and explain why.

b. How does non-repudiation differ from authentication? 

c. (4 pt) Create a business scenario that illustrates the importance of each.

9. Circle or highlight the correct answer to the following questions / statements about data communications:

(a) What characteristic of an analog signal is measured in Hertz, or cycles per second?

a. Amplitude c. Phase

b. Frequency d. Skew

(b) What measurement unit describes the speed and capacity of a communication channel?

a. Throughput c. Response Time

b. Access Time d. Data Transfer Rate

(c) ____ can be produced by a variety of sources, including electric motors, radio equipment, and nearby power transmission or communication lines.

a. EMI c.  Distortion

b. Attenuation d. Signal/noise (S/N) ratio

(d) A(n) ____ can extend the range of an electrical signal by boosting signal power to overcome attenuation.

a. repeater c. amplifier

b. return wire d. signal wire

(e) Which of the following does not allow multiple messages to be carried on a single channel?

a. time division multiplexing c. packet switching

b. frequency division multiplexing d. half-duplex

Application:

The Galaxy Hotel asks you to write a Windows application that computes the occupancy rate of the hotel. Occupancy rate is a percentage that is equal to the number of rooms sold divided by the total number of rooms available. The hotel has seven floors. The user should use an InputBox Function to respond to two questions about each floor: How many rooms are occupied on that floor? How many rooms on the floor are vacant? Display which floor you are asking about in each question. Display how many rooms are occupied and vacant on each floor in a ListBox object. After the user has entered all the information, display the following results: the total number of rooms at the hotel, the number of occupied rooms, and the number of vacant rooms. Also display the occupancy rate as a percentage, such as 61%. Non-numeric values should not be accepted. Do not accept negative numbers. Publish the application after testing the application.

requirements

1. At least one loop (since there are seven floors, which type of loop will you use?)

2. Validate no non-numeric data and/or negative numbers

3. Displays the following:

1. List box showing each floor occupied and vacant

2. Total rooms

3. Occupied rooms

4. Occupancy rate as a percentage

Considering the importance of data in organization, it is absolutely essential to secure the data present in the database. What are the strategic and technical security measures for good database security? Be sure to discuss at least one security model to properly develop databases for organizational security. Create a diagram of a security model for your research paper.Your paper should meet the following requirements:

• Be approximately four to six pages in length, not including the required cover page and reference page.
• Follow APA7 guidelines. Your paper should include an introduction, a body with fully developed content, and a conclusion.
• Support your answers with the readings from the course and at least two scholarly journal articles to support your positions, claims, and observations, in addition to your textbook. The UC Library is a great place to find resources.
• Be clearly and well-written, concise, and logical, using excellent grammar and style techniques. You are being graded in part on the quality of your writing.

Answer each these questions in a paragraph with at least five sentences: Include the question and number your responses accordingly. Provide a citation for each answer.

1. Describe Digital Literacy (how to know what is real on the web). 

2. None of these people exist. What does this mean to you?

3. Why is Wikipedia more reliable than a paper encyclopedia?

4. How useful are crowd sources answers?

5. What are some drawbacks to crowd sourced answers?

6. Do people generally utilize the diversity of sources on the Internet effectively?

7. How reliant are we and how reliant should we be on getting our news from social media?

8. How do humans remain vigilant when we turn over authority to computers? Have you tried to navigate without gps?

9. If models are simplifications or reality, why do we rely on them?

10. Why was this model, used by Amazon for hiring, wrong?

11. Why did Skynet declare war on the human race?

For the submission describe/explain/answer the following:

1. Describe in short standard ways to represent data, make selections, navigation patterns, and display quick alerts to the user.
2. Explain the use of offline storage.
3. What is GPS device Accelerometer used for?

Building the Derby App in Titanium –  Page 297.  see Chapter 10

 GO19_AC_CH01_GRADER_1G_AS – Open Houses 1.0

  In this project, you will create database objects to track the open houses for the Health Professions departments at a college. You will create a table and import data from Excel to create a second table. You will use a database template to enter data into the Events table. You will create a simple query, a form, and a report.

Start   Access. Open the downloaded file named Student_Access_1G_Open_Houses_AS.accdb, enable the content, and then   close the Event List multiple-items form that automatically opened. Open the   Navigation Pane.

In Datasheet view, create a new   table. Beginning in the second column of the table and using the data type of   Short Text, create the Department Name, Contact Last Name, Contact First Name, Campus, Phone, and Department Email fields (in that order). In the eighth column,   using the Currency data type, create the Special Pay field.

Change the data type of the ID   field to Short Text, rename the ID field to Department ID.

Starting in the Department ID   field, add the following three records to the new table:

HIT 

Health Information Technology

Lynneff 

Deborah 

Northwest 

(512) 555-6185

[email protected]

40 

LPN 

Licensed Practical Nursing

Gilbert 

Thomas 

Northwest 

(512) 555-1551

[email protected]

25 

PLB 

Phlebotomy 

Woodward 

Jean 

Northwest 

(512) 555-9012

[email protected]

30 

Save the table as Departments, and then close the table.

Append the records from the   downloaded Excel file a01G_Departments.xlsx   to the Departments table.

In the Navigation Pane, organize   the objects by Tables and Related Views. Open the Departments table (the   table has 14 records). Close the Navigation Pane.

Switch the Departments table to   Design view. Delete the Campus field. For the Department ID field, enter a   description of Enter one to five characters for the Department ID and then change the field size   to 5. Enter a description of Payment for   each open house event   for the Special Pay field. Save the table.

Switch to Datasheet view, apply   Best Fit to all of the fields in the table, save the table, and then close   the table.

Import the records from the   downloaded Excel file a01G__Rooms.xlsx   into the database as a new table named Rooms. Designate the first row as column headings and   the Room ID field as the primary key.

Open the Navigation Pane, open   the Rooms table in Datasheet view (the table has 10 records). Apply Best Fit   to all of the fields in the table, save the table, and then close the table.

Based on your Departments table,   use the Query Wizard to create a simple query. Add the Department Name,   Department Email, Phone, Contact Last Name, and Contact First Name fields (in   that order). Keep the default name of Departments   Query, click Finish to display the query results, and then close the   query.

Based on your Rooms table, use   the Form tool to create a form for the table. Save the form as Room Form, display the form in Form view,   and then close the form.

Based on your Departments table,   use the Report tool to create a report. Delete the Contact Last Name, Contact   First Name, and Special Pay fields from the report. Save the report as Departments   Report.

Sort the Department Name field   in ascending order. Set the width of the Phone and Department Email fields to   1.75 inches. Delete the page number   from the report, save the report, and then close the report.

Open the Event List form, and   then close the Navigation Pane. In the Event List multiple-items form, enter   the following record (the Start Time   and End Time data will reformat automatically):
 

  Title: LPN   Open House   Start Time: 1/16/22 11a End Time: 1/16/22 12p Description: Program   Overview   Location: MW112

In the Event List form, click   New Event, and in the Event Details single-record form, enter the following   record (the Start Time and End Time data will reformat automatically):
 

  Title:  HIT Open House Start Time: 1/16/22 2p
  End Time: 1/16/22 3p Description: Scholarship Applications Location: MN110

Close the Event Details   single-record form. Close all database objects, open the Navigation Pane, and   then exit Access. Submit the database as directed.

Please answer the question and it has plagiarism check. 

Using the five-paragraph format, discuss what makes a good visualization. This paper should be single-spaced. It should have a meaningful title. It must include 3 quotes from the text and/or expert sites found in the library’s research databases. All quotations should be set off by quotation marks and should be cited properly in APA format.  

Week 9 Assignment – Week 9 Status Report
Use the Week 9 Status Report Template [DOCX] to complete this assignment.

Your big presentation is due next week! Update your project manager with what has happened since your last report.
Include these 4 things:

1. What did you expect to accomplish on the project this week? (Copy this from item 4 of last week’s report.)
2. What did you actually accomplish on the project this week?
3. What issues have arisen, and what help do you need?
4. What must you accomplish to be ready for the kickoff presentation next week?
5. Please write up your responses as a series of bullet points in memo form. There is no need for a cover page.

*PLEASE SEE ATTACHMENT TO ANSWER QUESTION 1*

*Please see attachment #2 for template for the assignment*

Exp19_Excel_Ch03_ML1_Airports

Project Description:

As an analyst for the airline industry, you track the number of passengers at the top six major U.S. airports: Atlanta (ATL), Chicago (ORD), Los Angeles (LAX), Dallas/Fort Worth (DFW), Denver (DEN), and New York (JFK). You researched passenger data and created a worksheet that lists the number of total yearly passengers at the top six airports. To prepare for an upcoming meeting, you will create a clustered column chart to compare the number of passengers at each airport. Then, you will create a line chart that compares trends over time. Next, you will create a bar chart to compare the passenger count for the latest year of data available and then emphasize the airport with the largest number of passenger traffic. Finally, you want to insert sparklines to visually represent trends in passengers at each airport over the 10-year period.

Start   Excel. Download and open the file named Exp19_Excel_Ch03_ML1_Airports.xlsx. Grader has automatically added   your last name to the beginning of the filename.

You want to create a clustered   column chart to depict the passenger counts at the six airports over several   years.
  Use Quick Analysis to create a clustered column chart for the range A4:L10.   Cut the chart and paste it in cell A15.

You want to customize the column   chart with a chart title, display the years as a data series, enlarge the chart   to be easier to read, and apply a chart style.
  •Type Passengers   by Top U.S. Airports   as the chart title.
  •Swap the data on the category axis and in the legend.
  •Set a 3.5″ height and 11.4″ width.
  •Apply the Style 7 chart style.

The value axis takes up a lot of   space for the numbers. You will adjust the value axis to simplify it.
  •Change the display units to Millions for the value axis.
  •Edit the axis title to display Millions of Passengers.

You want to focus on the 2016 data   series by adding data labels.
  Display data labels above the columns for the 2016 data series only.

Applying a fill color to the   chart area will make the chart visually appealing.
  Apply the Light Gradient – Accent 2 preset gradient fill to the chart area.

A best practice is to add Alt   Text to a chart for accessibility compliance.
  Add Alt Text: The chart displays the number of passengers in millions   for the top six airports from 2006 to 2016. (including the period).

When you change the workbook   theme, Excel applies that theme to the chart styles.
  Change the workbook theme to Slice.

You want to create a bar chart   to display passenger counts for only one year.
  Create a recommended clustered bar chart for the range A5:A10 and L5:L10 and move   the chart to a chart sheet named Bar Chart.

You want to customize the bar   chart.
  •Change the chart color to Colorful Palette 3.
  •Enter Passengers   at Top 6 U.S. Airports in 2016 as the chart title.
  •Apply the Style 5 chart style.
  •Add Alt Text: The bar chart shows passengers at Top 6 U.S. Airports   in 2016. Atlanta had the most passengers. (including the period).

Modifying the axes will improve   readability of the bar chart.
  •Change the font size to 10 for the category axis and value axis.
  •Change the value axis Maximum Bound to 1.1E8.

You will format a data point so   that it stands out and then add gridlines to enhance readability in the bar   chart.
  •Format the Atlanta data point with Dark Blue, Text 2 fill color.
  •Add Primary Minor Vertical gridlines.

A line chart effectively shows   trends over time for the passenger counts at the different airports.
  Create a line chart using the range A4:L10 in the Passenger worksheet and   move the chart to a chart sheet named Line Chart. Add a chart title Passengers   at U.S. Airports 2006-2016 and bold the title.

You want to customize the line   chart.
  •Set the Minimum Bound at 4.0E7 for the value axis. The Maximum Bound should change to 1.1E8   automatically.
  •Set the Vertical (Value) Axis Display units to Millions. Delete the Vertical   (Value) Axis Display Units Label from the upper-left corner of the chart. Add   a value axis title In Millions.
  •Change the font size to 10 for the value axis and category axis.
  •Move the legend to the top.
  •Filter the chart by deselecting the odd-numbered years.
  •Add Alt Text: The line chart displays trends for top six U.S.   airports from 2006 to 2016 at two-year intervals. (including the period).