A web app allows users to change their email address via a POST form. An attacker could trick a logged-in user into submitting this form without their knowledge. What is the most effective defense against this attack?

Include a unique CSRF token in the form and validate it on the server.

Validate the email format on the server.

Use HTTPS to encrypt the form submission.

Set the form's enctype to 'multipart/form-data'.

What is the default behavior of express.static when serving files from a directory?

It requires a route to be defined for each file.

It serves files from the root path '/' by default.

It only serves files with a .html extension.

It automatically compresses files before serving them.

Which Express method is used to serve static files from a directory?

app.get('/static', express.static)

app.use(express.static('public'))

app.use(express.files('public'))

app.serve(express.static('public'))

LPI Web Development Essentials

Domain 5Objective 2

035.2 NodeJS Express Basics (weight: 4) WEB-DEVELOPMENT-ESSENTIALS Practice Questions (Page 3)

Part of the 035 NodeJS Server Programming domain, which makes up ~15% of our current practice bank. Linux Professional Institute does not publish an official question count, but from its 60-minute exam (~25–40 total, ~4–6 in this domain), expect 1–2 from this objective — we provide 33 practice questions to prepare you well beyond it. (estimate)

33questions here

7free pages

12concepts

Questions 11–15

11application · medium
A web app allows users to change their email address via a POST form. An attacker could trick a logged-in user into submitting this form without their knowledge. What is the most effective defense against this attack?
Select an answer first
12foundation · easy
What is the default behavior of express.static when serving files from a directory?
Select an answer first
13application · easy
A developer wants to create a route '/user' that displays a user profile. The user ID is passed as a query parameter, e.g., '/user?id=42'. How should the route access the ID?
Select an answer first
14foundation · easy
Which Express method is used to serve static files from a directory?
Select an answer first
15foundation · easy
Given the URL '/products?category=books&page=2', how do you access the value 'books' in an Express route handler?
Select an answer first

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035.2 NodeJS Express Basics (weight: 4) WEB-DEVELOPMENT-ESSENTIALS Practice Questions (Page 3)

Questions 11–15

A web app allows users to change their email address via a POST form. An attacker could trick a logged-in user into submitting this form without their knowledge. What is the most effective defense against this attack?

What is the default behavior of express.static when serving files from a directory?

A developer wants to create a route '/user' that displays a user profile. The user ID is passed as a query parameter, e.g., '/user?id=42'. How should the route access the ID?

Which Express method is used to serve static files from a directory?

Given the URL '/products?category=books&page=2', how do you access the value 'books' in an Express route handler?

Keep studying — 035 NodeJS Server Programming