COMPUTING
Attempt ALL questions in this section.
1.
Name a code that is used to represent text in a computer system.
2.
State which type of computer system would be used by a bank to process large
amounts of data at high speed.
3.
Name the part of the processor that carries out calculations.
4.
Jane saves her geography report at home using a
standard file format
.
State
one
standard file format suitable for saving word processed files.
5.
Nile Books is upgrading the computer network in its warehouse.
(
a
) Name this type of computer network.
(
b
) State
one
reason why fibre-optic cable may be used as the
transmission medium
.
6.
State
one
reason why an
interface
is needed between the processor and a peripheral
device.
7.
High level languages are translated into machine code using an
interpreter
or a
compiler
.
Describe
one
difference between an interpreter and a compiler.
8.
A school is having a sponsored walk to raise money for charity. State which
one
of
the following algorithms would be used to find the pupil who raised the most
money:
• Input validation
• Linear search
• Find maximum
• Find minimum
• Count occurrences.
9.
Orla uses
pre-defined functions
in her program code.
(
a
) State what is meant by the term “pre-defined function”.
(
b
)Give
one
example of a pre-defined function.
10.
Software is evaluated in terms of
fitness for purpose
.
State what is meant by the term “fitness for purpose”.
11.
A
structure diagram
is used to design a solution to a programming problem.
Name and describe
one
other design notation that could be used to design a
solution to a programming problem.
12.
A program stores pupils’ contact details. State a suitable data type for storing the
postcode EH22 1LE.
SECTION II
PROCESSOR
RAM
BACKING STORE
2·4 GHz
2·6 GHz
3·8 GHz
1Gb
2Gb
4Gb
250 Gb Hard drive
500 Gb Hard drive
CD-RW drive
DVD-RW drive
NUMBER OF USB INTERFACES
SOFTWARE
2
5
Graphics package requires 400 Mb RAM
Word processor requires 150 Mb RAM
Operating System requires 512 Mb RAM
Expel anti-virus requires 512 Mb RAM
Attempt ALL questions in this section.
13.
Oro Computers is a company that assembles computer systems according to
customer specifications. Some of the options available are shown below.
(
a
) State the
fastest
clock speed
shown above.
(
b
) A customer chooses 2 Gb RAM. He also buys the
operating system
and the
anti-virus program
listed above.
(i) If both these programs are stored in RAM at the same time, how much
RAM is available for other programs?
(ii) State
two
functions of an operating system.
(iii) State the law that is broken by deliberately sending a virus.
(
c
) A customer buys a computer system with 5 USB interfaces.
Suggest
one
reason why he wants 5 interfaces rather than 2 interfaces.
(
d
) State a task that may require a DVD-RW drive rather than a CD-RW drive.
(
e
) Apart from a hard drive, state
one
magnetic storage device that would be
suitable for storing a backup copy of a 40 Mb file.
13. (continued)
(
f
) The company will deliver to addresses within a distance of between 15 miles
and 60 miles inclusive from the warehouse.
(i) The Test Data Table below is not complete.
State what is missing from the table at A, B and C.
(ii) Create the
complex condition
missing from the conditional statement
below.
IF then display Can Deliver
Type
Test data
Expected result
19
Can deliver
Extreme
Can deliver
Exceptional
75
A
C
B
14.
Pupils and staff at Sabio High School are planning a “Get Fit” campaign and have
produced the following logo.
(
a
) Pupils used a graphics package to produce the logo.
Identify
one
object
and
one
operation
that may have been carried out on that
object.
(
b
) Allan uses an electronic sewing machine to attach the logos to T-shirts.
(i) State the type of computer that is built into the sewing machine.
(ii) State
one
suitable output device that could warn Allan of an error when
he starts to sew.
(
c
) Pupils write a computer program that can calculate a person’s Body Mass
Index (BMI) from their height in metres and weight in kilograms.
Example:
(i) State the type of variable that should be used to store the weight.
(ii) Using a programming language with which you are familiar, write code
for the formula:
(iii) Describe
one
way to make a program
readable
.
(iv) Describe why poor
readability
in a program affects the
maintenance
of the
program.
(
d
) The school website gives access to information on the “Get Fit” campaign.
Parents can also receive updates by e-mail.
(i) Describe the most efficient way for the school to send the latest update to
all the parents by e-mail.
(ii) State
one
way of directing people from the school website to other
websites for further information.
(iii) State the law that may make it illegal for the school to give the parents’
e-mail addresses to companies who sell fitness equipment.
Height
1·67
Weight
58·9
BMI
21·1
BMI = weight divided by (height)
]
15.
One hundred runners are taking part in a charity fun race.
Companies can sponsor individual runners.
There are three levels of sponsorship:
Bronze – £50
Silver – £100
Gold – £200
A program to process donations is being developed.
Two different versions of the user interface have been designed. These are shown
below.
(
a
) State
two
reasons why Interface B is a more user-friendly interface than
Interface A.
(
b
) Only Interface A will need to use an
input validation
algorithm when donations
are entered.
(i) Explain why input validation will be needed with Interface A.
(ii) Explain why input validation is
not
required with Interface B.
(
c
) State the data structure that should be used to store the one hundred runners’
names.
Marks
2
1
1
1
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Interface A Interface B
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