Jan2011 Question paper

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Candidate Centre Candidate
Name Number Number
2
GCE AS/A level
1241/01
INFORMATION AND
COMMUNICATION TECHNOLOGY
IT1
INFORMATION SYSTEMS
P.M. THURSDAY, 13 January 2011
21/4 hours
010001
1241
INSTRUCTIONS TO CANDIDATES
For Examiner's use only
Use black ink or black ball-point pen. Do not use pencil
or gel pen. Do not use correction fluid. Question Maximum Mark
mark awarded
Write your name, centre number and candidate number in 1 7
the spaces at the top of this page.
2 6
Answer all questions. 6
3
Answers should be written in the spaces provided. Where 4 8
the space is not sufficient for your answer use a
continuation sheet, taking care to number the continuation 5 6
correctly. 6 4
The intended marks for questions or part questions are 7 6
given in brackets [ ]. You are advised to divide your time
accordingly. The total number of marks available is 80. 8 17
9 4
You are reminded of the necessity for good written
communication and orderly presentation in your answers. 10 16
Quality of written communication will be assessed in Total 80
question 8.
JD*(W11-1241-01)

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Page 2

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SECTION A
Answer all questions.
1. (a) Define the terms data and knowledge. By giving two different examples, illustrate what
is meant by knowledge. [4]
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(b) Give two reasons why data is encoded and give an example of a possible problem with
encoding data. [3]
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2. A user interface should allow a good dialogue between humans and computer systems. The
task often determines which is the most suitable. For each of the following give an appropriate
use, advantage and disadvantage:
(a) Command line [3]
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(b) Speech recognition systems. [3]
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3. Good quality information is needed to make informed decisions. Other than accuracy,
describe three characteristics of good quality information, illustrating each characteristic with
an appropriate distinct example. [6]
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4. Schools use relational database programs as part of their administration systems.
(a) Some of the functions of the programs are mentioned below.…read more

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(ii) Report [2]
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(iii) Import/export. [2]
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(b) Give two reasons why relational databases are used rather than flat files. [2]
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5. CAD (Computer-aided design) software allows a user to draw accurate plans and designs.
(a) Other than zoom or rotation, describe two other features of a CAD package, giving an
appropriate distinct example of how each could be used. [4]
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(b) Many industries now use CAM (Computer-aided manufacture). Describe by using an
example the relationship between CAD and CAM. [2]
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6. The purpose of verification and validation is to minimise errors in data. Define the terms
verification and validation. Using an appropriate example, describe a validation method that
schools could use in their pupil record system. [4]
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7. Banks must protect their online systems from both deliberate crimes and accidental
destruction of data.
(a) The Computer Misuse Act was introduced to prevent various crimes. Describe using
distinctly different examples in each case, how two of these crimes could affect the
online bank accounts of home users. [4]
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(b) Describe how online bank account data can be protected from accidental loss or
damage to data. [2]
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8. A large supermarket company has many shops throughout the country.
(a) In each supermarket, barcodes are used extensively for the recording of stock and
purchases. Explain what a barcode is, how it is used to record stock and sales, and
discuss the advantages and disadvantages to the company of using barcodes. [6]
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(b) The company makes use of `just in time' for stock control. Explain how a `just in time'
stock control system works and discuss the advantages and disadvantages it offers the
company. [7]
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