Angular 5 Modules Modules are a great way to organize an application and extend it with capabilities from external libraries. NgModules consolidate components, directives, and pipes into cohesive blocks of functionality, each focused on a feature area, application business domain, workflow, or common collection of utilities. Modules can also add services to the application. [ Via ]. Check your knowledge on Angular 5 Modules by answering these below questions: 1. To be able to define modules we have to use the decorator . . . . . . A) @Component B) @NgModule C) @Input D) @angular 2. Every Angular app has at least one module, the . . . . . . You bootstrap that module to launch the application. A) uproot module B) top module C) basic module D) root module 3. The purpose of a NgModule is to declare each thing you create in Angular, and group them together (like Java packages or PHP / C# namespaces). A) True B) False 4. Using . . . . . modules makes Angular applications easier to ma...