WAD 2025 Intro quiz

What are the advantages of long-polling over short-polling?

• Long-polling is easier to implement

• Long-polling generates fewer requests

• Long-polling responds faster to events

• Long-polling requires fewer resources from the operating system

What tools/libraries are used for formal description of HTTP API specifications?

• OpenAPI

• Postman

• Swagger

• REST

What is the difference between Local Storage and Session Storage?

• Local Storage stores data as key/value pairs, while Session Storage stores data as binary strings

• Session Storage stores data as key/value pairs, while Local Storage stores data as binary strings

• Local Storage objects persist even after the browser is restarted

• Session Storage objects persist even after the browser is restarted

Which attribute of the Set-Cookie header blocks access to Cookie data from the JavaScript context?

• Secure

• HttpOnly

• SameSite

• NoJS

What technology is most commonly used for video content delivery and video conferencing?

• Protobuf

• Websocket

• gRPC

• WebRTC

On which languages can applications suitable for further compilation to WebAssembly be written?

• Rush

• Go

• JavaScript

• C++

Which of these attacks works on the client side?

• SQL Injection

• XSS

• SSTI

• XXE

Which of these HTTP methods does not exist?

• GET

• PUT

• GIVE

• TRACE

What does the HTTP response code 4xx indicate?

• Indicates a client-side error

• Indicates a server-side error

• Indicates that the request was successfully processed

What is the technology that implements HTTP headers Access-Control-Allow-* allowing web pages to access objects from third-party internet resources?

• SOP

• CORS

• AJAX

• CSP