A company has a legacy on-premises CRM system. They are building a new customer portal that needs to retrieve customer account information from the CRM. The CRM vendor provides a SOAP-based web service. The portal team prefers to use JSON. What is the most practical approach?

Have the portal call the SOAP service directly using XML.

Replace the CRM system with a modern cloud-based CRM that has a REST API.

Build a middleware API that translates between the portal's JSON requests and the CRM's SOAP service.

Use a GraphQL gateway to wrap the SOAP service.

A user reports that a website's layout looks broken in their browser, but it works fine in Chrome. The developer suspects the browser does not support a newer CSS feature used on the site. What is the most appropriate first step for the developer to take?

Remove all CSS and use only inline HTML styles.

Rewrite the entire site using WebAssembly to avoid CSS compatibility issues.

Check the browser's developer tools console for CSS parsing errors and use a feature detection tool like Can I Use.

Ask the user to switch to Chrome, as the site is only designed for Chrome.

Which of the following is a common deployment format for packaging a web application?

A container image, such as a Docker image.

When would a non-relational (NoSQL) database be a better choice than a relational database?

When the primary requirement is to enforce referential integrity between tables.

When the data has a highly structured and predictable schema.

When the application requires complex transactions with strict ACID guarantees.

When the data is semi-structured or unstructured and the schema may evolve over time.

Which of the following is an example of a client-server interaction in a web context?

A user typing a URL directly into the browser's address bar.

A web browser sending an HTTP request to a web server for a webpage.

A database writing data to its own storage engine.

A web server reading a configuration file from its local disk.

LPI Web Development Essentials

Domain 1Objective 2

031.2 Web Application Architecture (weight: 2) WEB-DEVELOPMENT-ESSENTIALS Practice Questions (Page 4)

Part of the 031 Software Development and Web Technologies domain, which makes up ~28% of our current practice bank. Linux Professional Institute does not publish an official question count, but from its 60-minute exam (~25–40 total, ~7–11 in this domain), expect 2–4 from this objective — we provide 32 practice questions to prepare you well beyond it. (estimate)

32questions here

7free pages

12concepts

Questions 16–20

16application · medium
A company has a legacy on-premises CRM system. They are building a new customer portal that needs to retrieve customer account information from the CRM. The CRM vendor provides a SOAP-based web service. The portal team prefers to use JSON. What is the most practical approach?
Select an answer first
17application · medium
A user reports that a website's layout looks broken in their browser, but it works fine in Chrome. The developer suspects the browser does not support a newer CSS feature used on the site. What is the most appropriate first step for the developer to take?
Select an answer first
18foundation · easy
Which of the following is a common deployment format for packaging a web application?
Select an answer first
19foundation · easy
When would a non-relational (NoSQL) database be a better choice than a relational database?
Select an answer first
20foundation · easy
Which of the following is an example of a client-server interaction in a web context?
Select an answer first

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