Notes

part a

1) a
explanation :componentDidMount() is invoked immediately after a component is mounted. Initialization that requires DOM nodes should go here. If you need to load data from a remote endpoint, this is a good place to instantiate the network request.
2) a c d
3)only a b and c
4)both the options are true
5)

part b

1)
2)c
3)no pic
4)c
5)a
6) a b d
7)b 1
8)axios and fetch is asynchronous ref: https://www.pluralsight.com/guides/hierarchy-of-components-and-how-to-get-async-data



9)

useEffect(()=>{
//implementation
})


useEffect(()=>{
//implementation
},[])

fuck both are given in out study material

If we pass an empty array as a second argument then the useEffect method runs only after the component mounts not after the component updates. It is equivalent to componentDidMount method in class based component.

When we pass a specific state as second argument as shown below, then the useEffect method will run once for the initial render and then every time when the specific state passed updates and not for other state updates.


10)