Privacy and Security

Posted on Thursday, 8 December 2011 by Mrs Nunn | 0 comments

"Describe the dangers that are inherent in the use of computers to manage files of personal data and describe simple processes that protect the security and integrity of data."




Task 1

Use the worksheet 'Data Security' and the link below to answer the quesions.

Data Security

Extension Task

Use the worksheet in the shared area CG1 Folder > Privacy and Security called "Biometrics and security" click on the link on the worksheet to watch the video and answer the questions in Word.

Data Protection Act 1998

Posted on Tuesday, 6 December 2011 by Mrs Nunn | 0 comments

Data stored about an individual is personal data.
Each of us has a lot of personal information stored about us - birth; marriage; employment; bank details; driving details; taxes; etc...

Safeguards to help prevent the misuse of files of personal data include...
Ensuring there is a password system of access
Any access to files should be audited - details of who accessed the files and when.
Computer users who store personal data must register with the Data Protection Register.

The organisation storing the data has obligations..
  • not to store or process data other than for a lawful purpose
  • to obtain and process data fairly and lawfully
  • to store only data that is relevant to the stated purpose
  • not to infringe the rights of the data subject
  • to make sure the data is accurate and up-to-date
  • not to hold the data longer than necessary.
  • to protect the data with the proper security.
  • not to send the data abroad other than to EU countries unless they have adequate data protection in place
The individual whose data is stored has rights...

  • to view data stored
  • to have data corrected or erased.
  • to be compensated for damage or distress caused by unlawful processing of data
There are some Exemptions from the Data Protection Act :
  • data used for home use or recreational purposes eg club members
  • data which may affect national security
  • data used to fight crime
  • data used for calculating wages, pensions or tax
  • data used for distributing information eg mailing lists
Task 1
Complete the  Data Protection Act worksheet.

Task 2
Exam Question:


June 2007
9. A local council stores data on residents. The data includes names, addresses and the value of their
houses. Employees access the council’s computer system using usernames and passwords and have
access to residents’ data.

(b) The council complies with the Data Protection Act by ensuring that residents’ data is
obtained lawfully, held securely and held for no longer than necessary. Describe three other
ways in which the council must operate in order to comply with the Data Protection Act. [3]

Memory Management

Posted on Thursday, 1 December 2011 by Mrs Nunn | 0 comments

Memory Management


The memory manager is responsible for the main physical storage of the system and the processing that is required


Exam Question

Describe in detail the role of the operating system in managing the some of the resources of a computer. [5]

Research Task

Explain the term fragmentation and briefly describe the effect that fragmentation will have on disc access.
Describe what happens during defragmentation.


Use the information in the slides for today and last lesson to help you.









Operating System Functions

Posted on Tuesday, 29 November 2011 by Mrs Nunn | 0 comments

Operating System Functions

Task 1

Answer  the questions at the end of the presentation.

Task 2

Use pages 28 - 30 Computing through Diagrams
Answer questions 1 - 7






Spreadsheet features

Posted on Thursday, 17 November 2011 by Mrs Nunn | 0 comments

Demonstate and understanding of the following features of spreadsheet software:

  • Pivot table
  • formulae
  • look-up tables
  • absolute and relative cell referencing
  • if function
Take a copy of the ATLAS SALES spreadsheet which has a list of Cusomer who have bought Atlases from a company. It shows which product they bought and how many.




Task 1

Give a definition of a pivot table.
Make the pivot tables on the worksheet and describe what they show.

Task 2

Give a definition of an if statement.
Use the if statement and describe it.


Task 3

Give a definition of a look up table.
Use the look up table and describe it.

Task 4
Give a definition of a function and a formulae.
Use the sum function to add up the total.
Describe what the formula would have been if the sum function hadn't been used.

Task 5
Use absolute and relative cell references in the currency converter.
Describe absolute and relative cell references.








Issues with the internet, email, chat rooms and forums

Posted on Tuesday, 15 November 2011 by Mrs Nunn | 0 comments

Issues With the Internet


Make a powerpoint for revision including some of the social and ethical issues associated with the internet.

Social issues are how these features of the internet may affect us in our daily lives.
They include health, social and personal issues.

Ethical issues are things that are considered wrong in normal society.









Internet and email in the workplace

Posted on Thursday, 10 November 2011 by Mrs Nunn | 0 comments


Many companies use email and the Internet to run their business. Some companies allow their employees unlimited access to the Internet and email for personal use while other companies allow limited access to the Internet and email for personal use.


 
Internet and Email at Work

Below is part of a past exam question that is worth 8 of the total marks; write a detailed answer to this question to ensure you can achieve the full eight marks:


Explain how a company could limit access to the Internet and how they could limit access to
email.
Explain why some companies allow unlimited access to the Internet and email for personal use and why other companies limit access to the Internet and email for personal use.


Benefits and Drawbacks of Social Networking Sites

Posted on by Mrs Nunn | 0 comments



Social Networks

Brainstorm

What are the main drawbacks of social network sites?
What are the main benefits of social network sites?

Benfits and Drawbacks of Social Networking Sites
Task 1

Have a look at a recent exam question and write a detailed answer that will gain you maximum marks. You can refer to the slideshow if necessary.





Computers and eMarketing

Posted on Tuesday, 8 November 2011 by Mrs Nunn | 0 comments

Computers and eMarketing

Online Marketing or internet advertising has come about due to the increased use of communications technology.

Task 1
Using the handout provided, take a copy of the worksheet Computing and eMarketing from the shared area and complete all the questions.

Task 2
Susceptibility to unauthorised access

Describe which measures can be put in place to protect a company network from unauthorised access.



eBusiness

Posted on Thursday, 3 November 2011 by Mrs Nunn | 0 comments

Computing in Business and Commerce
eBusiness
Task 1
 Take a copy of the worksheet Computing and eBusiness from the shared area.
Using the handout provided complete the questions.

Computers and Business

Posted on Tuesday, 1 November 2011 by Mrs Nunn | 0 comments

eCommerce


Growth of Internet Based Business
Task 1

Take a copy of the worksheet Computing and Business and Commerce from the shared area.

Using the handout answer the questions on the sheet.

Facilities provided by an email system

Posted on Wednesday, 12 October 2011 by Mrs Nunn | 0 comments

"Describe the facilities provided by electronic mail systems.
Identify situations where email is the most suitable method of communication and situations where it is not suitable.
Justify using email as a method of communication."


Task 1 - Demonstrate use of the advanced features of email software

Carry out the following tasks using Outlook Express, make some screenshots and place in a Word document:
  • - setting up folders
  • - set up a distribution list
  • - setting up rules
  • - multiple attachments and zipped folders
  • - change junk mail options and add to a safe senders list
Explain why each one of these features is useful to a business and any situations where another method of communication would be prefereable. Help sheet below.

Task 2

Make a poster for an office to inform staff about 'email etiquette'.

http://www.emailreplies.com/



Help sheet:
Advanced Features Email

Human Computer Interface Design

Posted on Tuesday, 11 October 2011 by Mrs Nunn | 0 comments

Factors to be taken into account

Task 1 - Matching exercise

In groups of three set out the factors on the table, discuss the descriptions and match them up. Use the handout if necessary.

Task 2 - HCI Questions

Use handout

1.            What can a designer do to assist the techno phobic user?
2.            Why is it advisable to make the user interface in a new program similar to others in operation?
3.            Why do many users customise the screens on their own computers?
4.            Explain what is meant by information overload.
5.            How can a designer help to prevent information overload?
6.            What is the most common complaint that causes frustration for users?
7.            List the four main factors that should be considered when creating an HCI.
8.            Give the six different ways of interacting with computers and explain one factor about each.
9.            Give one advantage and one disadvantage of using a command line interface.
10.         Give one advantage and one disadvantage of using a GUI.

Homework
HCIexamquestions

Documentation

Posted on Tuesday, 4 October 2011 by Mrs Nunn | 0 comments

"Describe the contents and use made of user documentation and maintenance documentation.
Describe the people likely to use each type of documentation for typical computer applications.
Describe the factors that influence the content of user documentation and be able to describe the content of a typical user manual.
Describe the following components of maintenance documentation: annotated listings, algorithms and data dictionaries.
Explain how each piece of documentation might be used."

Task 1 
Documentation section on The Teacher website


Task 2
In a presentation/document describe each of the components of maintenance documentation listed above.  ( annotated listings, algorithms and data dictionaries)

Task 2
Take a copy of
SLC question 2009 and Documentation question Jan 2011
Have a go at answering these past exam questions




Homework
Revise topics on the given list for a test on Friday

Human Computer Interface (HCI)

Posted on Wednesday, 28 September 2011 by Mrs Nunn | 0 comments

During the design stage a number of decisions have to be made about the human computer interface to ensure it is appropriate for users with different skill levels. It also has to be suitable for use in different environments.


The examples in the video are a little futuristic but different systems can have different interface requirements.

Task:

Take a copy of the HCI Design presentations and Heathcote chapter 31 for future study. 

Work on Heathcote chapter 31. Read through each section carefully.
Answer the four questions that appear on pages 183,184 and 188, then have a go at the exercises on page 189.

Save your completed work in your Systems Life Cycle folder.

Homework:  Research and describe three HCIs with a variety of different features.

Data Flow Diagrams - DFDs

Posted on Monday, 26 September 2011 by Mrs Nunn |

System Life Cycle - Analysis stage

DFDs are used as a method of documenting the flow of data through the current system.
A variety of symbols can be used however the WJEC specification uses the following


Task 1 - A college library system identifies each book in its stock by a unique BookID. The BookID is encoded in a barcode attached to the book. When a borrower returns a book it is scanned and any fine due is calculated by extracting from teh library database the date that the book was due back.
Draw a Data Flow Diagram that models the library loans system.

Task 2 - Answer the exam question using a Word document.

Current trends in the use of computers

Posted on Friday, 23 September 2011 by Mrs Nunn | 0 comments


Consequences of current trends in the uses of computers
" Describe the social and economic changes occurring as a result of developments in computing and computer use, and their ethical, legal and other consequences."


Watch each of the video clips from the BBC news.
  • Teleworking - is it suitable for everyone and Teleworking - using ICT to work from home;
  • Online Gambling;
  • Microprocessors and Robots;
  • Internet shopping 1 and 2.

Complete the accompanying worksheets and save into your AS Computing Theory folder.



http://www.bbc.co.uk/news/technology/