angular-01.md

does not show anything returns an error in the console:
<intro productName="SpaceShipApp"></welcome>
returns a blank page
<intro></intro>
returns the value that is stored with the json keyname name
<intro productName="{{ name }}"></intro>
[] is for binding from the value that is stored with the json keyname name, in the parent component to an @Input() in the child component. It allows to pass objects.
<intro [productName]="{{ name }}"></intro>
[] is for binding from the value(which is the string name) in the parent component to an @Input() in the child component. It allows to pass objects.
<intro [productName]="name"></intro>
return the text 'name'
<intro productName=" 'name' "></intro>
returns the the value that is stored with the json keyname name
<intro productName="{{'name'}}"></intro>
is for binding an event handler to be called when a DOM event is fired or an EventEmitter on the child component emits an event return the text name
<intro (productName)="name"></intro>

angular-02.md

Which of the following statements about the routers behavior are correct?

The home component can only be accessed via the root URL redirect.
false as { path: '', redirectTo: '/home', pathMatch: 'full' }, sets the default path to the home component

The id parameter is optional when a call is made to the /detail/ URL.
false an id is required to proceed to the  ItemDetailComponent Component

Optional parameters can be passed to any component via the query parameters of the ActivatedRoute.
true

/detail/100 will use the to determine the position of the view.
true

Specifying an outlet name is a requirement for a component with multiple outlet routes.
True if there is multiply outlet routes one must be selected such as 'route1'