035.2 NodeJS Express Basics (weight: 4) WEB-DEVELOPMENT-ESSENTIALS Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   In an EJS template, how do you access a property of an object passed from the route?

   • AUsing the 'get' method, e.g., <%= user.get('name') %>
   • BUsing the 'prop' function, e.g., <%= prop(user, 'name') %>
   • CUsing bracket notation with quotes, e.g., <%= user['name'] %>
   • DUsing dot notation, e.g., <%= user.name %>
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2. 2expert · hard

   A developer is building an API endpoint that accepts JSON data via POST. The data includes a 'name' field that must be a string. The developer has added express.json() middleware. What is the most robust way to validate the 'name' field?

   • ACheck if typeof req.body.name === 'string' and it is not empty.
   • BUse express.urlencoded() instead of express.json() to parse the body.
   • CAssume req.body.name is a string because the client sent JSON.
   • DCheck if req.body.name exists using req.query.name.
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4. 3foundation · easy

   What is the default directory where Express looks for view templates?

   • AThe 'templates' directory.
   • BThe 'views' directory in the project root.
   • CThe current working directory.
   • DThe 'public' directory.
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5. 4foundation · easy

   Which property of the request object contains the query string parameters in Express?

   • Areq.body
   • Breq.url
   • Creq.params
   • Dreq.query
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6. 5foundation · easy

   Why is it important to validate user input in a web application?

   • ATo reduce the amount of code needed.
   • BTo eliminate the need for error handling.
   • CTo prevent security vulnerabilities and ensure data integrity.
   • DTo make the application faster.
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