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INTRODUCTION
The marking schemes which follow were those used by WJEC for the January 2010
examination in GCE INFORMATION & COMMUNICATIONS TECHNOLOGY (NEW). They
were finalised after detailed discussion at examiners' conferences by all the examiners
involved in the assessment. The conferences were held shortly after the papers were taken
so that reference could be made to the full range of candidates' responses, with photocopied
scripts forming the basis of discussion.…read more

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IT1
1(a) One mark per answer 2
Reduces the amount of hard disk space / less memory required - NOT
less space
Lessens the chance of entry errors / easier to validate / greater
consistency.
Faster to search.
NOT Easier to code data than to type the whole word.
NOT anything connected to security.
1(b) Any two from: 2x2
(problem must match example to get 2 marks)
Encoding can coarsen data and the loss of precision must be weighed
against its advantages, e.g.…read more

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Any two from: 2x2
(Cost must match example to get 2 marks and examples must relate to
context and differ)
Financial: Cost of posting letters to parents on an annual basis to check
whether their data is correct.
Time: Time taken to enter data / time taken to check data on the system
with the SEN register or LEA free school meals lists, etc.
Human: Extra staff needed to enter the data / collect the returns from
parents, etc.…read more

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Repetitive processing: carrying out the same task to the same standard
repeatedly (consistency), e.g. Processing the payroll run on a computer
for a large organisation.
Speed of processing: carrying out many complex computer calculations
in a relatively short time interval, e.g. it would be impossible to produce
accurate weather forecasts for the next five days without a powerful
computer / credit card transactions.
Data storage capacity: Able to store an enormous amount of information
in a small space, e.g.…read more

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Any three from: 3
Better monitoring of what all staff are using their systems for by being able
to centrally audit all transactions simply.
Easier to backup data by being able to do it from one central location.
Greater security by having one program controlling all computer access.
Having a central pool of data/documents which all staff can access.
Staff can work jointly on the same document at the same time.…read more

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Candidates give a clear, coherent answer stating the three 7
main components and fully and accurately describing, with
examples the advantages and disadvantages of their use.
They use appropriate terminology and accurate spelling,
punctuation and grammar.
3-4 marks Candidates state the three main components and describe
some advantages and disadvantages using some
examples but responses lack clarity. There are a few errors
in spelling, punctuation and grammar.
1-2 marks Candidates make brief points and may give an advantage,
disadvantage or example.…read more

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Candidates give a clear, coherent answer fully discussing 11
the uses with examples, advantages and disadvantages.
They use appropriate terminology and accurate spelling,
punctuation and grammar.
4-7 marks Candidates make some points with examples, advantages
and disadvantages but responses lack clarity. There are a
few errors in spelling, punctuation and grammar
1-3 marks Candidates simply make brief comments but may not give
examples, advantages or disadvantages. The response
lacks clarity and there are significant errors in spelling,
punctuation and grammar.
0 marks No valid response.…read more

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Simulation modelling means using a computer and mathematical
formulas to imitate a real phenomenon. (they look at what if scenarios)
Advantages
Enables predictions to be made in areas which may be dangerous to
humans.
It is usually much cheaper as do not have to crash planes or cars.
Some situations cannot be performed in real life for testing purposes - a
10% price hike, making a nuclear reactor go critical.
Easier to study long term affects by speeding up time scale or by slowing
down.…read more

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One mark for naming a validation technique. Up to 2 marks for 3
detailed description.
e.g. I put a range check (1) of between 1 and 9999 (1) on my customer
order number (1) to ensure numbers were within the correct range (1),
(any of these other points are worth a mark).
I used conditional formatting (1) by putting a preset formula (1) e.g. to
work out the date (1) for data in another cell (1).…read more

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