Alteryx Foundation Micro-Credential Practice Exam

What is the range of the Int32 datatype?

1. 0 to 2^32

2. -(2^31) to (2^31) -1

3. -(2^15) to (2^15) -1

4. -2147483648 to 2147483647

The correct answer is: -2147483648 to 2147483647

The Int32 datatype is a 32-bit signed integer. This means it can represent both positive and negative whole numbers. The range is determined by how many bits are used for the number and how the sign bit is handled. In an Int32, one bit is used to indicate the sign (positive or negative), which leaves 31 bits for the actual number. The maximum value for a signed 32-bit integer is calculated as 2^31 - 1, which equals 2147483647. Conversely, the minimum value, which includes negative numbers, is - (2^31), resulting in -2147483648. Hence, the correct range of the Int32 datatype is from -2147483648 to 2147483647. Other choices do not provide the correct interpretation of the Int32 datatype. For example, the range of 0 to 2^32 describes an unsigned integer, which does not accommodate negative values. The range of -(2^15) to (2^15) - 1 is too limited as it describes a 16-bit signed integer instead. Additionally, using -(2^31) to (2^31) - 1 fails to account for the actual numerical limits, illustrating a