Multiple Browsers — Test 4

Correct Answer: C. Chromium (Blink)
Explanation: Samsung Internet is preinstalled on Samsung Galaxy devices.

Correct Answer: D. It rendered and compressed pages on Opera's servers before sending them to the phone
Explanation: Server-side rendering limits the use of interactive JavaScript.

Correct Answer: A. A Chromium-based component that lets Android apps display web content inside the app
Explanation: On iOS, apps use WKWebView, which is based on WebKit. ALSO KNOW (related points): • Which engine does Chrome for Android use? → Blink • Which engine is Samsung Internet built on? → Chromium (Blink) • How did Opera Mini reduce data usage on slow mobile networks? → It rendered and compressed pages on Opera's servers before sending them to the phone • Which browser engine do Electron desktop apps (such as Visual Studio Code) embed? → Chromium • What is Lynx? → A text-only web browser that runs in a terminal • How often does Chrome release a new major stable version? → About every 4 weeks • Which built-in PDF viewer does Firefox use? → PDF.js, written in JavaScript • What does Reader View (or Reader Mode) in browsers do? → It strips away clutter such as ads and sidebars and shows the main article text in a clean layout • In a single-page application, what does history.pushState() allow? → Changing the URL and adding a history entry without reloading the page • Which video codec is the most universally supported for HTML5 <video> across all major browsers? → H.264 (AVC) in an MP4 container

Correct Answer: C. Chromium
Explanation: Electron combines Chromium with Node.js.

Correct Answer: B. A text-only web browser that runs in a terminal
Explanation: Lynx is useful for accessibility testing and for checking how crawlers see text.

Correct Answer: C. About every 4 weeks
Explanation: Firefox also moved to a 4-week release cycle.

Correct Answer: C. PDF.js, written in JavaScript
Explanation: Chrome's built-in viewer is based on PDFium.

Correct Answer: D. It strips away clutter such as ads and sidebars and shows the main article text in a clean layout
Explanation: Well-structured semantic HTML, such as <article>, helps Reader View work.

Correct Answer: A. Changing the URL and adding a history entry without reloading the page
Explanation: Client-side routers use it, and the popstate event handles the Back button.

Correct Answer: C. H.264 (AVC) in an MP4 container
Explanation: VP9 and AV1 offer better compression, but historically had less universal support.