Tech for boost: 2021

(1) C# default access modifier

namespace :    public

enum        :    public

interface :    public

class     :   private

struct           :   private

delegate         :   private  

constructor      :   private (note if no constructor is explicitly defined, 
                            a public default constructor will be automatically defined)
    
method           :   private

field            :   private

enum member      :  public

cinterface member: public

For example

namespace AccessDemo
{
    class OuterClass
    {
        void MethodA() {}
        class InnerClass {}
    }
}


is equivalent to
namespace AccessDemo
{
    internal class OuterClass
    {
        private void MethodA() {}
        private class InnerClass  {}
    }
}

(2)In Console Application, how to get input from the user ?
 Console.Write("Enter a string - ");
Console.Write("Enter input : ");
string userinput = Console.ReadLine();
Console.WriteLine("You entered '{0}'", userinput
);
output :
Enter input : test input
You entered 'test input'
'

(1) When filtering data, why should you create a copy of the data being filtered?

• To improve performance

• In case you want to make edits to the data

• To maintain the order between page refreshes

• Otherwise you will lose data

(2) How do you specify where your routed components will appear in your application?

• They always appear just inside the <body> tag of your index.html.

• Use the <router-view> component.

• Use the <router-outlet> component.

(3) Once you have defined routes, how do make the router aware of them?

• Use RouterModule.forRoot or RouterModule.forChild in your Angular module.

• You don't need to make the router aware of them, declaring them as the data type "Routes" is sufficient.

• Import your routes file using a <script> tag in your index.html.

• Add the routes array to the declarations section of your module.

(4) What is the TestBed used for?

• Creating utilities for mocking services

• Integrating HTTP with Tests

• Creating mock child components

• Mimicking a Live Environment for Components

(5) What is Tree Shaking?

• An Optimization algorithm for binary searches

• A way to put multiple pieces of code together

• Automated removal of unused code

(6) When bootstrapping an Angular app, how do you specify the main Angular app module to load?

• Angular discovers the module based on the component that was bootstrapped.

• You load your module directly in your index.html file.

• You add your Angular module as a package in your SystemJs config.

• In your main SystemJs package (e.g. main.ts), you pass your app module into the platformBrowserDynamic.bootstrapModule() method,.

(7) When would you create a custom pipe?

• If you need to format an absolutely positioned node

• If you need to sort and filter your data

• If you need to have some business-specific formatting

(8) Which of the following is used as a container for components, services, directives, etc.?

• Dependency Injection

• An Angular Modules

• SystemJS

(9) Why would you use a setter on an @Input directive?

• To created a derived value on an Input value

• To validate the value of an Input

• To create a read-only input value

(10) How do you specify the html tag (e.g. <event-details>) to use for a component?

• You set the selector property in the component meta-data config.

• You set the tag property in the component meta-data config.

• You name the file that contains your component to match the tag name you want.

• You specify the tag name when declaring the component in your Angular module.

<<Angular Fundamentals part-4

Tech for boost

Monday 31 May 2021

C# interview question Part-1

Sunday 10 January 2021

Angular MCQ : Angular Fundamentals : Part 5

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