Multiple Browsers MCQs

100 MCQs (Page 6 of 10)

Attempt Multiple Browsers Quiz

Which shortcut opens browser history in Chrome, Edge, and Firefox?

Ctrl + B
Ctrl + J
Ctrl + Y
Ctrl + H

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Which website is commonly used to check which browsers support a given HTML, CSS, or JavaScript feature?

w3schools.com/validate
whois.com
pagespeed.dev only
caniuse.com

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What is a polyfill?

An image compression tool
A CSS reset
Code that implements a missing modern feature in older browsers
A browser extension

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Which approach is recommended for handling browser differences?

Writing separate sites for each browser
Blocking unsupported browsers
Feature detection (checking whether an API exists) rather than User-Agent sniffing
Parsing the User-Agent string

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What were vendor prefixes such as -webkit-, -moz-, and -ms- used for in CSS?

Loading fonts
Experimental or non-standard implementations of CSS features in specific engines
Marking comments
Defining media queries

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Which tool automates real browsers (Chrome, Firefox, Edge, Safari) through browser-specific drivers such as chromedriver and geckodriver?

Postman
Selenium WebDriver
Wireshark
JUnit only

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What is a headless browser?

A browser without a homepage
A browser without JavaScript
A text-only browser such as Lynx
A browser that runs without a visible user interface, used for automated testing and scraping

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What does a web page that works in Chrome but breaks in Safari most likely indicate?

The page needs Flash
The server is down
The DNS is wrong
The page uses a feature or behavior that WebKit does not support, or supports differently

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Which plugin technology reached end of life in all major browsers in 2020–2021?

JavaScript
PDF viewing
Adobe Flash Player
WebAssembly

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What is WebAssembly (Wasm)?

A Chrome-only plugin
A new version of HTML
A CSS framework
A binary instruction format that runs at near-native speed in all major browsers

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