Knowledge check

1.

The boolean, number, string, and enum types are examples of which category of subtype of any?

Type parameters.

Object types.

Primitive types.

2.

Which of the following types is an example of an object type?

Array.

void.

Type parameters.

3.

What is the primary difference between the any and unknown types?

You can assign any value to unknown, but the any type has some constraints.

You can access the properties of an unknown type but not an any type.

You can access the properties of an any type but not an unknown type.

4.

What is the name of the feature in TypeScript that tells the compiler I know what I'm doing?

Literal narrowing.

Type assertion.

Type guard.

5.

What is a Tuple?

An array with an infinite number of elements of the same type.

An array with specific number of elements of the same type.

An array with a specific number of elements of one or more types.

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