Sunday, October 15, 2017

Computer Networks

Introduction to Computer Networks


Objectives for the lessons
  • Be able to define what a computer network is
  • Describe the different functions of network devices / hardware
  • Distinguish between host and a server computer, P2P network, 
  • Describe the different network types and Wireless network
  • Examine the different network topologies

Watch the Ted video
All computer devices can be hacked

How computer network impact our lives
https://www.youtube.com/watch?v=p6BPnbui4Bk


Network Devices and Hardware
Examples of network devices



Computer networks basics

Notes Slideshare




Resources 
Types of computer networks

Wireless networks

Network topologies

Network Devices

Ethical Dilemmas facing Developers today

Analyse one of the dilemmas and share your views.

Ethical issues for computer network security professionals

Friday, October 13, 2017

Animation Project

Create Animation Product to sensitize Kenyans on the important of peace at this time of  presidential repeat election.

Your animations should;

  • Apply advance techniques in the animation software of choice.
  • Have at least two characters
  • Include inbuilt voice/speech generation from characters and music
  • Show difference scenes applied
  • Last for between 40 secs and 1 minute.
  • The Animation should be uploaded on YouTube.

Example

Sunday, October 8, 2017

Special Purpose Application Software

Research and describe ONE special purpose application software used in the listed specific scenarios. In your description, include the benefits of using the software in that field.
  1. Health
  2. Business and Employment
  3. Education and Training
  4. Environment
  5. Home and Leisure
  6. Politics and Government

The Quality of Software
The software market is highly competitive even though Microsoft dominates the operating system and productivity software markets. Competition and other market pressures have forced software vendors, including Microsoft, into rushing their products to market, bugs and all. Some industry observers have argued that the quality of software is declining with an increasingly higher percentage of bugs being left intact within commercial software. The end result of this rush to market is that customers lose time and money coping with annoying bugs. Information technology and those who make software decisions are putting pressure on software vendors to raise the quality of their software. Generally, they want a clean product, even if they have to wait for it.

Discussion:
What can software vendors do within the context of competition and economic reality to improve software quality?

Discussion:

What can those who buy commercial software do to improve software quality?

http://wps.prenhall.com/bp_long_computers_12/16/4332/1109235.cw/content/index.html

Wednesday, October 4, 2017

Answering Paper 2 Guidance

Task A.

Read the article and use the marking to assess the student's response. 

  1. CHILD DRINKERS ARTICLE
  2. MARKSCHEME
  3. STUDENT'S RESPONSE

GuiDANCe in ANSWERING PAPER 2 ARTICLE QUESTIONS
Criterion A;
Part 1: What is the social and ethical issue being presented?
            Why is it a concern? What direct descriptions from the article shows that this is the issue mentioned?
            What extract / quotes from article supports the above?

Part 2: Who is the primary stakeholder?
            How does the primary stakeholder use the IT system?
            Which part of IT system is used by the stakeholder?
            
This answers "Who", "How" and "Why"

Criterion B;
Use the document in the link below to learn how to respond to criterion B.
Answering ITGS Paper 2 Criterion B

Criterion C;
Use the document in the link below for ideas on how to respond to criterion C;
Answering ITGS Paper 2 Criterion C 

Criterion D:
Part 1: Describe the one problem resulting from the use of the IT system.
            What is the impact of the problem?
            State  one solution to the one problem described
Part 2:  Describe how the solution will work
           NB Technical solutions should be describe with IT terms showing inputs, processing, storage, outputs.
           Non technical solutions should be supported with policies and actions required.
Part 3: Evaluate some positives strengths of the solution in solving the problem.
            Evaluate some negatives of the solution in solving the problem.
Part 4; Conclusion
        What  areas of the solution do you have issues with?
        what do you recommend for future development of the solution       

Summary of all \Criteria.
Overall strategy for Paper 2 Criteria

Read the News Article

Assignment for Wednesday 8th Nov 2017
Use the article assigned to prepare a presentation for the Paper 2 of question. 
The answer booklet in attached below;

The news articles are in the following link; http://isditgs.weebly.com/paper-2-samples.html
Alya & Gurjog
Paper-2-article-prisoner-monitoring-system.doc

Shahil & Ali-Mohammed
Paper-2-article-digital-manipulation.doc

Esther & Wahaab
Paper-2-article-olympic-facial-recognition.doc

Preet & Dhruv
Paper-2-article-teachers-bullied-online.doc

Alameen & Hussein
Krishan & William

Kirunda & Amin

Davesh & Carlos
paper-2-crime-updates-online.doc
Mohammed & Karan
paper-2-paramedics-use-qr-codes.doc
Naeem & Riya
paper-2-sim-card-to-prevent-cyberbullying.doc



Monday, October 2, 2017

Discussion Questions


1.    Computer of the Future
Think about how mobile our computing devices have become and the convergence of different devices such as cameras, phones, and computers. What do you think the computer of the future will be like? What capabilities will it have that computers currently don’t have? Do you see desktop computers becoming obsolete in the near future?

2.    Table Monitors and PixelSense Monitors
Table monitors and PixelSense monitors are monitor-like devices built into tabletops and work surfaces. Users “grab” and manipulate objects on the display using touch commands. Like an iPod Touch or iPhone, the display is multitouch and can accept simultaneous input from multiple users, so the table monitor can be helpful with games or other products that require interactivity. Microsoft launched a product called PixelSense in 2007, and although it never really took off, you see similar devices featured on some TV crime-fighting shows as detectives manipulate crime evidence and photos. Why do you think this device never really captured the interest of the public? Would this be a useful object to have in your home, classroom, or office? Why or why not?

3.    Ethics Violations
Review the Ethics in IT section in this chapter. Which of the 10 Ethical Computing Guidelines do you think students violate most often? Why do you think these violations occur, and what do you think could be done to reduce or eliminate such unethical behaviors?

4.    External Storage
Hard drives are great for storing data on your computer, but there are many reasons why you might want to have alternative storage devices. List various external and mobile storage devices discussed in this chapter, and describe the purposes and uses of each. Which device types do you currently use, and for what purposes? What device(s) might you have a need to use in the next year or so?

5.    iPad
The Apple iPad has been enthusiastically accepted because of its multitouch screen, useful apps, two cameras, and small, light frame. If the CEO of Apple were to ask you for your advice as to what to include in the next version of the iPad, what would you suggest? What features would make tablets even more appealing to students?


6.    Market Dominance
Microsoft and Apple are large corporations and have control of most of the OS market. Although there have been some innovative changes to both of their proprietary operating systems, does their size and market dominance prevent more innovation? Why or why not? Linux, as an open source environment, is poised for greater innovation. Why do you think the Linux OS doesn’t have a greater market share?

7.    A Web-Based OS
OS interfaces have evolved from a text-based console format to the current GUI. Modern operating systems such as Windows and OS X are starting to include features that store and retrieve data from the cloud (the Internet). Many believe the OS of the future will be totally web-based and not require the installation of an OS on a specific device. Discuss the implications of this type of OS. What are the potential security issues of a totally web-based OS?

8.    To Hackintosh or Not: That Is the Question
Using Mac’s Boot Camp, or virtualization software such as VMware, it’s easy (and legal) to install Windows on a Mac. It isn’t quite as easy to install Mac OS X on a PC, but it can be done. A PC that has been modified so that Mac OS X can be run on it is called a Hackintosh. What are the benefits of tweaking a PC to run Mac OS X? Is it okay to violate Apple’s End User Licensing Agreement (EULA), which prohibits installation of OS X on non–Apple-branded equipment? If Apple changed its EULA to allow the installation of its software onto PCs, would that ultimately hurt Apple-branded computers?

9.    What App Is Best for You?

There are plenty of interesting apps available for Windows and Apple devices—some for fun, some to aid in productivity, some with specific utilitarian roles. Design or describe what the best app for you would be. What features must it have? Why would you need it?

110.    Living on the Cloud

Cloud computing is becoming more popular, and many users are working from the cloud and not even realizing it. What kinds of software applications are you using that are completely Web-based? Why do you use them instead of installed software applications? Envision a time when all software is Web-based and describe how being totally on the cloud would be an advantage. Also list some of the disadvantages a cloud-based environment might present.

Mid-term DS Paper 3 Research Activities

  See below the assigned area of investigation Az-zara:  AI-Based Hiring Platforms: HireVue Objective: Research how HireVue uses AI-driven...