Yr 11 CH 5 Review

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1 point

Computers are used for analysing data because?

they can make better and more intuitive decisions when the dat is incomplete

they are able to accurately model and simulatereal world systems

after analysis the resulting information is always correct

they can examine vast quantities of data with incredible speed and accuracy

1 point

Which of the following statements is incorrect?

Increasing the amount of RAM is likely to improve performance

Increasing the amount of secondary storage is likely to improve performance

Secondary storage is non-volatile

RAM is volatile

1 point

Searching is simplified when?

the data is text

the data is not sorted

the data is sorted

the data is numeric

1 point

The logical statement "A=8 AND A>4" is?

True when A>4

True when A=8

Always true

Never true

1 point

Sorting 15, 12, 21,2, 9 and 3 into ascending alphabetical order would result in?

21, 15, 12, 9, 3, 2

12, 15, 2 ,21, 3, 9

2, 3, 9, 12 ,15, 21

12, 15, 21 ,2 ,3, 9

1 point

If the individual pixel values within a full colour bitmap image were sorted into ascending numerical order then the resulting image?

would not be affected

would be similar in appearance to a rainbow

would be a random mix of colours

could not be viewed as it has been corrupted

1 point

Sorting is rarely performed on individual image, audio and video files because?

each file is really a distinct data item

the order in which each element appears within the file is significant

sorting would alter the data

All of the above

1 point

The process of determining the outputs from various sets of inputs is called?

simulation

what-if analysis

modelling

searching

1 point

Incorrect information derived from correct data is likely to be the result of?

data incorrectly analysed

unauthorised analysis of data

linking databases incorrectly

Any of the above

10.

1 point

A business, without the knowledge of it's employees, analyses the websites visited by each of it's employees. This is an example of?

data incorrectly analysed

unauthorised analysis of data

linking databases incorrectly

All of the above

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