AS & A Level Information Technology (9626) — October–November 2023, Paper 13

Using a numerical example, explain the differences between data and information.

Irene has produced a document using a word processing package. She has saved it as a text file and also as a separate word processed file. Give four advantages of saving the…

Mainframe computers and supercomputers are specialised types of computer with some similar characteristics. Explain what is meant by each of the following characteristics. (a)…

A bank stores a database of all its customers. The first field in the database is the account number. The account numbers are different for each customer and consist of 10 digits,…

It is essential to calibrate sensors used in any monitoring technology. Describe what is meant by: (a) two point calibration

When searching a database it is possible to use different types of query. Describe the differences between simple and complex queries.

Sound editing software has a number of features. Describe what is meant by: (a) fade in and fade out

The average (mean) of a set of 10 numbers is calculated by: - adding the numbers together to get a total - dividing the total by 10. Juan has attempted to draw a flowchart of an…

A programmer is writing an algorithm in pseudocode to determine whether a number is a factor of another number. Y is a factor of X if the result of X/Y is a whole number. In…

The manager of the payroll department within a company has commissioned a computer programmer to write software to run the payroll. Justify this decision to use custom written…

Weather forecasting makes use of computer models. Analyse the effectiveness of computer models for producing weather forecasts.