Which specific browser utility or tool allows web developers to modify, inspect, and trace the active visual styles and spacing constraints of elements on a page in real time natively? MCQ with Answer and Explanation

Question

Which specific browser utility or tool allows web developers to modify, inspect, and trace the active visual styles and spacing constraints of elements on a page in real time natively?

A. Incognito browser window frame

B. Local server cache monitoring console

C. Elements Panel / Styles Inspector

D. Standard bookmark navigation dashboard

Answer: Option C

Solution (By JKSSB Mock Tests)

The Elements panel in browser Developer Tools provides a live, interactive view of a webpage's DOM structure and applied CSS rules, allowing developers to test design adjustments instantly on screen.

This question belongs to: Computer Internet and Web Technologies

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What mechanism does a web server implement to compress digital image files dynamically over internet networks to reduce asset payloads and accelerate webpage loading speeds?

A. Altering localized device hardware MAC address registries

B. Static FTP file catalog adjustments

C. Running outbound SMTP mail server delivery routines

D. Image Compression / Optimization algorithms (e.g., WebP formatting)

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Correct Answer: Option D

Explanation:
Modern image formats like WebP use advanced compression algorithms to provide smaller file sizes than traditional JPEG or PNG formats, significantly lowering bandwidth consumption.

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Which of the following is a common method to prevent clickjacking?

A. Content-Security-Policy with frame-ancestors

B. Both A and B

C. X-Frame-Options header

D. SameSite cookie attribute

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Correct Answer: Option B

Explanation:
Both X-Frame-Options and CSP's frame-ancestors directive can be used to control iframe embedding, preventing clickjacking.

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What is the role of the 'alt' attribute in an HTML img tag?

A. To set the image source

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C. To add a tooltip

D. To specify alternative text for accessibility and when image fails to load

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Correct Answer: Option D

Explanation:
The alt attribute provides a text alternative for an image, improving accessibility and providing fallback content if the image cannot be displayed.

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