Senior Dot Net and Fullstack Developer

Senior Dot Net and Fullstack Developer Interview Questions and Answers

Updated 7 Jul 2025

Q. What is the difference between ref and out parameters?

Ans.

ref is used for passing a variable by reference, out is used for returning a value from a method

  • ref is used to pass a variable as a reference to a method, allowing the method to modify the variable

  • out is used to return a value from a method, even if the method does not return a value explicitly

  • ref variables must be initialized before passing to a method, out variables do not need to be initialized

4d ago

Q. What is lazy loading in Angular?

Ans.

Lazy loading in Angular allows for loading modules only when they are needed, improving performance.

  • Lazy loading helps reduce initial load time by loading modules on demand

  • Implemented using loadChildren property in Angular routing configuration

  • Example: { path: 'lazy', loadChildren: () => import('./lazy/lazy.module').then(m => m.LazyModule) }

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