distributed systems

  

a) Briefly differentiate between lazy and (immediate) eager update propagation. How can they be compared to delayed-write and write-through policy in implementation? Which situations would they be good? 

Multi-Touch Screens Versus Mouse-Driven Screens

 

Multi-Touch Screens Versus Mouse-Driven Screens

Resources

The following resources may be helpful when completing this assignment.

Scenario

Computer applications that run on desktop and laptop computers  have, for a long time, been designed to be driven by dragging and  clicking a mouse. With the introduction of tablet personal computers,  the trend has shifted toward using touch-based screens. We now have  access to touch-based TVs, touch-based monitors, touch-based laptops,  and touch-based tablets. Touch and multi-touch devices provide end users  with the ability to interact physically with an application much more  naturally.

Imagine that you are the Information Technology Director of a  major chain restaurant, and you have been assigned to design a menu  ordering application that can run on all devices. Examine whether using a  touch-screen monitor, a tablet, or a mouse to select menu items to  place an order would be most efficient. Speculate how employees would  interact with these devices and the type of emotional reaction that  customers and employees will experience while placing a beverage,  appetizer, or entrée order.

Instructions

Write a 4–5 page paper in which you:

  1. Differentiate between the interaction types and styles that apply to multi-touch screens and applications running on them.
  2. Determine the conceptual model that you would use when designing a product for your restaurant.
  3. Describe the key analogies and concepts these monitors expose  to users, including the task-domain objects users manipulate on the  screen.
  4. Determine one utility or tool in an application for touch-based  and mouse-driven screens that should be designed with memory retention  or recall. Provide a rationale for your response.
  5. Use at least three quality resources in this assignment. Note: Wikipedia and similar websites do not qualify as quality resources. You may use the resources above or others of your choosing.

This course requires the use of Strayer Writing Standards. For  assistance and information, please refer to the Strayer Writing  Standards link in the left-hand menu of your course. Check with your  professor for any additional instructions.

The specific course learning outcome associated with this assignment is:

  • Analyze the functionality required to allow an application to run on multiple types of devices.

Presentation. Computer Science 302

Presentation on ITUnand its purpose

ITU-T (International Telecommunications Union – Telecom Group 

Technical recommendations about telephone, telegraph and data communications interfaces 

Composed of representatives from each country in UN

Based in Geneva, Switzerland (www.itu.int)

Additional Source

https://whatis.techtarget.com/definition/International-Telecommunication-Union-ITU

https://www.itu.int/en/ITU-T/Workshops-and-Seminars/qos/022015/Documents/Bios-Abstracts-Presentations/S1P1-Hiroshi-OTA.pptx

Contingency Planning

  1. Contingency Planning
    Contingency planning is a risk mitigation process for developing back-up plans in anticipation of events (scenarios) that might disrupt ‘business as usual’. Business continuity planning is an expanded version of contingency planning that typically encompasses a more comprehensive and extended response plan for getting back to ‘business as usual’. In a well-formatted, highly-detailed research paper, address the need to contingency planning, ensuring to address the following items:
    (1) Benefits of scenario events/planning.
    (2) Questions to consider when implementing scenario planning.
    (3) The common types of scenario planning.
    Your paper should meet these requirements:

    • Be approximately 4 pages in length, not including the required cover page and reference page.
    • Follow APA 7 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.

Data Analysis

https://lionbridge.ai/datasets/10-open-datasets-for-linear-regression/
– https://careerfoundry.com/en/blog/data-analytics/where-to-find-free-datasets/
OR ANY REPUTABLE SOURCE OF DATA.
Write a 2 page (minimum) paper.  In the paper, define the problem that you are analyzing.  What is the question that you want to be answered from the data?  What is your hypothesis?
25%:  Analysis of the dataset (explain the data and also perform a statistical analysis).  Speak to which features you kept and why. 
25%: Use the techniques learned in this class and discover at least 1 “AHA” in the data.  By that, I mean that I expect you to discover a relationship between two variables or an INSIGHT into the data.  Explain your findings.
25%: Define which visualization(s) you choose to use and why you chose them.  I expect the visualizations to be professional and readable by themselves without references to anything else.  (I am not going to be looking through your data to try to understand your visual).  Attach your visuals to the end of the document.  Create a Tableau Story that combines your visuals and provide the link to it in the document.
15%: Summarize your work from a social or business perspective.  Why is this important?  How could this insight be used to make a difference?
CITE YOUR SOURCES and add them to the end of your paper.  (I recommend citefast.com.  You can cite all of your sources there and export to word and just add it to the end of your paper.)
In summary – you will turn in:
A 2-page Analysis
A page (or 2) of Visualizations
A list of your sources/references

Project Part 1 Task 2: Risk Assessment Plan

  

Purpose

This project provides an opportunity to apply the competencies gained in the lessons of this course to develop a risk management plan for a fictitious organization to replace its outdated plan.

Learning Objectives and Outcomes

You will gain an overall understanding of risk management, its importance, and critical processes required when developing a formal risk management plan for an organization.

Required Source Information and Tools

The following tools and resources that will be needed to complete this project:

  • Course textbook
  • Internet      access for research

Deliverables

As discussed in this course, risk management is an important process for all organizations. This is particularly true in information systems, which provides critical support for organizational missions. The heart of risk management is a formal risk management plan. The project activities described in this document allow you to fulfill the role of an employee participating in the risk management process in a specific business situation.

  

Submission Requirements

All project submissions should follow this format:

  • Format: Microsoft Word or compatible
  • Font: Arial, 10-point,      double-space
  • Citation Style: Your school’s preferred style      guide
  • Minimum 2 pages per task

Scenario

You are an information technology (IT) intern working for Health Network, Inc. (Health Network), a fictitious health services organization headquartered in Minneapolis, Minnesota. Health Network has over 600 employees throughout the organization and generates $500 million USD in annual revenue. The company has two additional locations in Portland, Oregon and Arlington, Virginia, which support a mix of corporate operations. Each corporate facility is located near a co-location data center, where production systems are located and managed by third-party data center hosting vendors. 

Company Products 

Health Network has three main products: HNetExchange, HNetPay, and HNetConnect.

HNetExchange is the primary source of revenue for the company. The service handles secure electronic medical messages that originate from its customers, such as large hospitals, which are then routed to receiving customers such as clinics.

HNetPay is a Web portal used by many of the company’s HNetExchange customers to support the management of secure payments and billing. The HNetPay Web portal, hosted at Health Network production sites, accepts various forms of payments and interacts with credit-card processing organizations much like a Web commerce shopping cart.

HNetConnect is an online directory that lists doctors, clinics, and other medical facilities to allow Health Network customers to find the right type of care at the right locations. It contains doctors’ personal information, work addresses, medical certifications, and types of services that the doctors and clinics offer. Doctors are given credentials and are able to update the information in their profile. Health Network customers, which are the hospitals and clinics, connect to all three of the company’s products using HTTPS connections. Doctors and potential patients are able to make payments and update their profiles using Internet-accessible HTTPS Web sites.

Information Technology Infrastructure Overview

Health Network operates in three production data centers that provide high availability across the company’s products. The data centers host about 1,000 production servers, and Health Network maintains 650 corporate laptops and company-issued mobile devices for its employees.

Threats Identified

Upon review of the current risk management plan, the following threats were identified:

· Loss of company data due to hardware being removed from production systems

· Loss of company information on lost or stolen company-owned assets, such as mobile devices and laptops

· Loss of customers due to production outages caused by various events, such as natural disasters, change management, unstable software, and so on

· Internet threats due to company products being accessible on the Internet

· Insider threats

· Changes in regulatory landscape that may impact operations 

Management Request

Senior management at Health Network has determined that the existing risk management plan for the organization is out of date and a new risk management plan must be developed. Because of the importance of risk management to the organization, senior management is committed to and supportive of the project to develop a new plan. You have been assigned to develop this new plan.

Additional threats other than those described previously may be discovered when re-evaluating the current threat landscape during the risk assessment phase.

The budget for this project has not been defined due to senior management’s desire to react to any and all material risks that are identified within the new plan. Given the company’s annual revenue, reasonable expectations can be determined.

  

Project Part 1 Task 2: Risk Assessment Plan

After creating an initial draft of the risk management plan, the second part of the assigned project requires you to create a draft of the risk assessment (RA) plan. To do so, you must:

  1. Develop an introduction to the plan      explaining its purpose and importance.
  2. Create an outline for the RA plan.
  3. Define the scope and boundaries for the RA      plan.
  4. Research and summarize RA approaches.
  5. Identify the key roles and      responsibilities of individuals and departments within the organization as      they pertain to risk assessment.
  6. Develop a proposed schedule for the RA      process.
  7. Create a professional report detailing the      information above as an initial draft of the RA plan.

Evaluation Criteria and Rubrics

  • Did the student demonstrate an      understanding of the competencies covered in the course relating to risk assessments?
  • Did the student include all important      components of a RA plan in the outline?
  • Did the student demonstrate good research,      reasoning, and decision-making skills in identifying key components and      methodologies?
  • Did the student create a professional,      well-developed draft with proper grammar, spelling, and punctuation?