1. Disadvantage of manual XML parsing — string matching may be more efficient than what?

❌ XML root element
❌ String matching is never more efficient
❌ XML attribute structure
✅ An XML tree of the data

Explanation:
Building and traversing an XML tree (DOM parsing) can be expensive.
Simple string matching may be faster for small or simple XML.

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2. Authentication type commonly used for password recovery magic link

❌ Token-based
❌ Session-based
✅ Passwordless
❌ Single Sign-On

Explanation:
Magic links = passwordless authentication, often used for login or recovery.

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3. Term describing starting a server and binding to a port

❌ http.name
✅ app.listen
❌ http.view
❌ app.request

Explanation:
app.listen(port) starts the server in Express/Node.js.

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4. Node.js lacks many web-app features. Developers extend it using?

❌ JavaScript
❌ Timely updates
❌ JSON
✅ External libraries and packages

Explanation:
Node relies on npm packages for routing, DBs, authentication, testing, etc.

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5. True statement about jsonwebtoken.verify()

❌ Returns a response
✅ Verifies a JSON Web Token
❌ Generates a JWT
❌ Returns HTTP status code

Explanation:
jwt.verify(token) checks token validity and decodes payload.

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6. Express’s app class provides what function?

❌ Lookup web services
✅ Map to a web resource path
❌ Access a URL
❌ Parse network path

Explanation:
Express maps routes like:
app.get("/home", handler).

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7. Which framework is based on Node.js runtime?

❌ XML-JS
❌ Async.js
✅ Express
❌ JSON

Explanation:
Express is the most widely used Node.js web framework.

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8. Which package parses XML string into JS object?

❌ Express.js
❌ Async.js
❌ XML-JS
✅ xml2js

Explanation:
xml2js converts XML → JavaScript object.

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9. Library + module used for black-box testing of REST APIs

✅ Mocha / SuperTest
❌ Koa / SuperTest
❌ Express / TestAPI
❌ Postman / TestAPI

Explanation:
Mocha = test framework, SuperTest = HTTP assertion library.

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10. Middleware is most useful for which task?

❌ Large calculations
❌ Routing
❌ Parsing strings
✅ Error handling

Explanation:
Middleware commonly handles logging, auth, validation, and error handling.

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🧾 SUMMARY TABLE

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