Online Test ReactJS

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You have 6 minute to answer 19 questions, after that you will not be able to continue the test.

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Life cycle methods of a components fall under following categories?
A parent component could access or read its children components properties
Input field that does not supply a value is called as
The default value of input field could be set using which of the following attribute?
PropTypes is used for
Which of the following mounting methods is/are invoked before the component is inserted into DOM?
Mixins are used to take care of cross-cutting concerns
Which of the following is used to trigger a UI update?
Data flow from owner to owned components using which of the following?
The value of textarea is set using its children in the same way like HTML
Change or update to large number of nodes is optimized using which of the following techniques?

ReactJS renders Components (classes) if the element is defined in

Pre and post lifecycle methods of components are represented using
Which of the following methods change the state of the component?
ReactJS renders HTML tags if the element is defined in
An owner component defines its children component within render method
One can define default values for properties, props, using which of the following method?
To use native javascript as an attribute value, the expression should be wrapped within
A component can mutate its properties as and when required