Data Structures Quiz

What is a data structure?

• A way to organize data within memory for efficient processing.

• A type of programming language.

• A method for creating user interfaces.

• A tool for designing graphics.

What is an array?

• A collection of records.

• A data structure that contains groups of elements, usually of the same type.

• A type of database.

• A programming language.

Which of the following is a data type?

• Algorithm

• Integer

• Compiler

• Syntax

In a one-dimensional array, what is the index of the first element?

• 1

• 0

• 2

• 3

What is the value at index [4] in the one-dimensional array example?

• 11

• 42

• 26

• 56

In a two-dimensional array, what is the element at index [1,2]?

• Fred

• Davies

• Evans

• Wilson

What happens when you delete data from an element at a given index in an array?

• The array size increases.

• The memory at that index becomes blank.

• The array becomes unsorted.

• The array is duplicated.

How can arrays be used in searching data?

• By creating new data.

• By sorting data alphabetically.

• By reading data into an array and searching using the index.

• By deleting unnecessary data.

What is the data type and length of the 'PupilID' field in a record?

• String, 5

• Integer, 10

• Character, 1

• Real, 8

Which field in a record is used as a unique identifier?

• Surname

• PupilID

• Attendance

• House No