Which of the following browser utilities allows software developers to directly inspect a webpage's DOM structure, debug JavaScript errors, and trace network resource load timelines natively? MCQ with Answer and Explanation

Question

Which of the following browser utilities allows software developers to directly inspect a webpage's DOM structure, debug JavaScript errors, and trace network resource load timelines natively?

A. Developer Tools (DevTools)

B. Browser Cache Manager

C. Incognito Browser Window

D. Bookmark Navigation Hub

Answer: Option A

Solution (By JKSSB Mock Tests)

Built-in Developer Tools (DevTools) in modern browsers provide deep access to inspect elements, analyze network payloads, check console logs, and debug scripts.

This question belongs to: Computer Internet and Web Technologies

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Which technology serves as an open standard for short-range wireless communication, enabling data exchanges between devices like phones, mice, and laptops over small personal spaces?

A. DSL Matrix

B. FTP Bridge

C. Ethernet

D. Bluetooth

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Correct Answer: Option D

Explanation:
Bluetooth is a short-range wireless technology standard used for exchanging data between fixed and mobile devices over short distances, creating personal area networks (PANs).

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What is the primary operational objective of a web browser's 'Rendering Engine'?

A. To parse raw network data streams into secure backup configurations

B. To assign dynamic local IP values to hardware items

C. To interpret HTML, CSS, and script instructions and display them as a formatted visual layout on the screen

D. To filter email spam items automatically

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Correct Answer: Option C

Explanation:
The rendering engine's job is to take text-based web code (HTML, CSS, images) and draw the interactive graphical composition on the device screen.

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Which of the following files contains structured, plain text settings used by the Apache web server to configure localized directory permissions and redirect behaviors?

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B. robots.txt

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Correct Answer: Option A

Explanation:
The .htaccess (hypertext access) file is a directory-level configuration file supported by several web servers to manage access controls and URL rewrites.

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