Multiple Browsers — Test 3

Correct Answer: D. They can intercept and modify network requests, so they need a secure origin to prevent tampering
Explanation: Service workers are the basis of Progressive Web Apps (offline support and push notifications). ALSO KNOW (related points): • In Chrome, what is the address bar called that combines URL entry with search? → Omnibox • Which statement about bookmarklets is correct? → They are bookmarks whose URL begins with javascript:, which run code on the current page • What does about:blank do? → It opens an empty page generated internally by the browser, without contacting any server

Correct Answer: B. Omnibox
Explanation: Firefox's equivalent was historically called the 'Awesome Bar'.

Correct Answer: D. They are bookmarks whose URL begins with javascript:, which run code on the current page
Explanation: Some browsers limit bookmarklets because of the risks of running arbitrary code.

Correct Answer: A. The small site icon shown in browser tabs, bookmarks, and history
Explanation: It is declared with <link rel="icon" href="...">.

Correct Answer: D. It opens an empty page generated internally by the browser, without contacting any server
Explanation: about:blank is often used as a placeholder in iframes and new windows.

Correct Answer: D. It synchronizes bookmarks, passwords, history, and settings across devices using your account
Explanation: Firefox offers end-to-end encryption for synced data.

Correct Answer: A. Ctrl + 0
Explanation: Ctrl and + zooms in, and Ctrl and - zooms out.

Correct Answer: B. Pop-ups that are not triggered by a direct user gesture, such as a click, are blocked by default
Explanation: Opening a window inside a click handler is usually allowed. ALSO KNOW (related points): • What does the autoplay policy of modern browsers generally allow? → Muted autoplay; video with sound usually needs prior user interaction • Which Firefox release channel is designed for organizations that need stability and longer support? → Extended Support Release (ESR) • What is the status of the Do Not Track (DNT) header? → It is largely abandoned because sites were not required to honor it; Global Privacy Control is a newer signal

Correct Answer: A. Muted autoplay; video with sound usually needs prior user interaction
Explanation: This policy protects users from unexpected noise.

Correct Answer: B. A secure context (HTTPS) and the user's explicit permission
Explanation: The same applies to the camera, microphone, and notifications.