Vector images consist of shapes which can be edited into different shapes to change the appearance of the image.
Describe the techniques that can be applied to the shapes in a vector image to change its appearance.
A2 -Paper 3 Model Questions
Passage
•
Computers
•
12th Grade
•
Easy
Cathrine Jesu
Used 3+ times
FREE Resource
11 questions
Show all answers
1.
OPEN ENDED QUESTION
5 mins • 6 pts
Vector images consist of shapes which can be edited into different shapes to change the appearance of the image.
Describe the techniques that can be applied to the shapes in a vector image to change its appearance.
Evaluate responses using AI:
OFF
Answer explanation
Key Answers :
• Use of Bezier handles to change angle of line/curve that starts/ends at anchor /node /smooth control point
• Moving node/anchors/control point to change the start/end points of Bezier curves (that make up rounded shape)
• Dragging node from one position to another/co-ordinates on the image canvas
• Adding node to line to divide line into two and moving new node
• Deleting nodes to join lines and remove curves/angles in the lines
• Group/ungroup shapes to allow for movement/scaling of parts of images
• Changing the colour/ transparency /size /rotation of shape/object in the image
• Manually editing/amending the code/instructions in the SVG XML file.
2.
OPEN ENDED QUESTION
5 mins • 6 pts
Discuss the benefits and drawbacks of the use of data mining by businesses.
Evaluate responses using AI:
OFF
Answer explanation
Benefits: Max five from:
• Data mining analyses a vast amount of data from numerous source to discover trends/relationships/links between data that are not (immediately) obvious
• Retail businesses analyse historical data to be able to predict who may respond to advertising campaigns/targeted advertising to increase sales & find new markets
• Financial institutions analyses customer data to discover/detect fraudulent credit card transactions • to protect credit card owner/user • detect/determine what (type of) customers may/may not be a good risk for loans
• Manufacturers analyse engineering/ production data to detect faulty equipment /determine optimal control parameters
• To increase quality/reduce errors/defects in their processes
Drawbacks: Max five from:
• Personal privacy issues of extracting data from internet activities/social networks/e-commerce/forums/blogs concerns the public
• Businesses may lose control of their customer data when it is used for data mining and may be/could be responsible for resulting any data loss/breach
• Customers/clients cannot be sure/certain their data is anonymised during data mining/data cannot be traced back
• Customers data must be kept secure during the data mining process • because any data loss will result in costs to the business/legal liability for the business
• Data collected/determined/found/linked through data mining can be misused by businesses • to take advantage of vulnerable people/discriminate against a group of people.
3.
OPEN ENDED QUESTION
3 mins • 2 pts
Different methods can be used to make objects appear to move in computer animations. Explain why key frames are used in computer animations.
Evaluate responses using AI:
OFF
Answer explanation
Key points :
• To define or specify the start and end point of a movement (of the objects)
• To define/specify the movement (of the objects) − that the viewer will see (1)
• To define/specify the timing of the movement (1) − by the position of the key frame in a sequence of frames (1).
4.
OPEN ENDED QUESTION
3 mins • 3 pts
Cellular networks are used to provide mobile communications for users.
Describe the structure of a cellular network.
Evaluate responses using AI:
OFF
Answer explanation
Key points :
Three from:
• Base stations (cellular subsystem) for (wireless) connection to end user
• Core or central switched network for handling voice calls/text messages
• Packet switched network for handling (mobile) data and internet traffic
• Public switched telecommunications for connection into the global telephone networks.
5.
OPEN ENDED QUESTION
5 mins • 4 pts
Loops in JavaScript repeatedly execute blocks of code.
Describe how a for loop works in JavaScript code.
Evaluate responses using AI:
OFF
Answer explanation
Four from:
• Loops through a block of code a number of times − depending on the outcome of testing a condition
• Requires usually three expressions or statements in the syntax
− A declared variable/an expression to be evaluated before each iteration
− Expression to be evaluated at start may be omitted and it does not produce an error by JavaScript if omitted
• Incrementing the variable at end of iteration/loop is optional
• Loop continues until condition is met
• Loop will continue forever if condition not met
• If evaluate statement (which is expression 2) is omitted then a Break must be included to prevent loop going on forever
6.
OPEN ENDED QUESTION
5 mins • 6 pts
Describe the benefits to businesses of employees using instant messaging to communicate with other employees for business purposes.
Evaluate responses using AI:
OFF
Answer explanation
Key points : Six from e.g.:
• very Simple and no expertise required to set up and use by all employees/other businesses
• Accessible at any time/anywhere/at home/while mobile that has a network connection
• Accessible from almost all computing devices so no specific hardware required
• Provides real-time communications between employees/other businesses enabling fast responses to queries/issues (compared to email) - eliminates delays in communications
• (May be) cheaper than using telephone systems for long distance /international/ lengthy conversations so saves money
• Can keep/record of a conversation/messages for reference/archive/legal purposes
• Less disruptive to employee workflow than telephone calls/can have several IM conversations simultaneously/less intrusive in meetings
• Can increase productivity of employees who require immediate assistance/assist others/customers
• Can be used alongside/as adjunct to video-conferencing
• Can be used for group chats
• Use of end-to-end encryption can make communications secure.
7.
OPEN ENDED QUESTION
10 mins • 8 pts
A new head office is to be designed and built for a company.
Evaluate the use of project management software for supporting this project.
Evaluate responses using AI:
OFF
Answer explanation
Evaluate: judge or calculate the quality, importance, amount, or value of something.
Max 6 from e.g.:
• The variety of tools available in project management software can help drive a project forward.
• Can collaborate with team members using communication tools in real time
• so that each team member is kept up to date/can deal with issues/problems as they arise/happen
• Can share document with tools that allow individuals to edit/amend/update reports/allow transparency in actions/issues
• Control/manage costs to keep track of expenditure/track budgets throughout the project • to avoid overspend/re-allocation of resources
• Can help manage risks/forecasting problems/issues to enable control/mitigation of risk/problems • to enable the project to continue unhindered/uninterrupted
• Can create reports in different formats/from various data sources/automatically send • to keep team members/management/ stakeholders informed/updated
• Can be intuitive to use/has dashboard-based interfaces which need little training • to use/simple to use and easy to install allowing quick implementation and start-up of projects Against: Max 6 from e.g.:
• Can be expensive with costs outweighing the return on the investment (ROI)
• Not economic to use/train users for some projects so company loses money on the project
• Cannot carry out specialised task as well as dedicated/specialised software • so may not be used/may need to invest in/use specialised applications for some tasks
• Head Office designs/project may be simple
• so may not need PMS software/PMS software may complicate the project and delay competition/result in excessive costs
• Automated alerts may slow work/interrupt work • because more time is taken on dealing with every alert/too many alerts/setting up all the alerts so project is delayed/costs overrun.
15 questions
Computer Software Maintenance
Quiz
•
9th - 12th Grade
10 questions
System Development Life Cycle (SDLC)
Quiz
•
10th Grade - Professi...
10 questions
Software Development methodologies
Quiz
•
11th Grade - Professi...
10 questions
Introduction to Computers - Computer Components
Quiz
•
9th - 12th Grade
10 questions
IT System Maintenance Quiz
Quiz
•
12th Grade
10 questions
Hardware & Software
Quiz
•
11th - 12th Grade
9 questions
1.2.3. Software Development
Quiz
•
12th Grade
15 questions
NPTEL Software Engineering Quiz
Quiz
•
12th Grade
25 questions
Equations of Circles
Quiz
•
10th - 11th Grade
30 questions
Week 5 Memory Builder 1 (Multiplication and Division Facts)
Quiz
•
9th Grade
33 questions
Unit 3 Summative - Summer School: Immune System
Quiz
•
10th Grade
10 questions
Writing and Identifying Ratios Practice
Quiz
•
5th - 6th Grade
36 questions
Prime and Composite Numbers
Quiz
•
5th Grade
14 questions
Exterior and Interior angles of Polygons
Quiz
•
8th Grade
37 questions
Camp Re-cap Week 1 (no regression)
Quiz
•
9th - 12th Grade
46 questions
Biology Semester 1 Review
Quiz
•
10th Grade