Arrays

What do primitive data types hold?

• Multiple pieces of data

• No data

• A single piece of data

• Complex data structures

Answer explanation

Primitive data types hold a single piece of data, such as a number or a character.

What is a characteristic of data in arrays?

• Data can be of different data types.

• Data is unstructured.

• All instances of the data have the same data type.

• Arrays can only hold numeric data.

Answer explanation

The characteristic of data in arrays is that all instances of the data have the same data type.

What is an index in the context of arrays?

• A function to perform operations on array items.

• A unique identifier for the array.

• A type of data structure.

• A way to identify one item in the array.

Answer explanation

An index in the context of arrays is a way to identify one item in the array.

Which of the following is NOT a feature of arrays?

• Identifier (name)

• Data type

• Color

• One or more dimensions

Answer explanation

The correct choice is 'Color' because arrays do not have a feature related to color. The other options are all features of arrays.

What does a 2D array represent in the given image?

• A single row of elements

• A matrix with rows and columns

• A collection of 2D shapes

• A three-dimensional structure

Answer explanation

A 2D array represents a matrix with rows and columns, making it the correct choice.

What is a 1D array commonly referred to as?

• Matrix

• List

• Table

• Graph

Answer explanation

A 1D array is commonly referred to as a List.

What is a 2D array commonly referred to as?

• List

• Graph

• Table

• Queue

Answer explanation

A 2D array is commonly referred to as a 'Table' because it is a data structure that organizes data in rows and columns, similar to a table.

What is the value at index 2 in the given array?

• A) 17

• B) 42

• C) 13

• D) 56

Answer explanation

The value at index 2 in the given array is 42, so the correct answer is B) 42.

How many elements does the array in the diagram contain?

• A) 3

• B) 4

• C) 5

• D) 6

Answer explanation

The array in the diagram contains 5 elements, so the correct answer is C) 5.

What is the identifier for the record type 'Artwork'?

• title

• artist

• year_created

• Identifier

Answer explanation

The identifier for the record type 'Artwork' is 'Identifier', as it uniquely identifies the artwork record.