Which specific browser feature or utility allows web developers to test mobile responsive web configurations by mimicking different smartphone screen aspect ratios natively within the desktop display window? MCQ with Answer and Explanation

Question
Which specific browser feature or utility allows web developers to test mobile responsive web configurations by mimicking different smartphone screen aspect ratios natively within the desktop display window?
A. Device Mode / Responsive Design View
B. Standard bookmark navigation manager
C. Local server cache monitoring index
D. Incognito browser window frame
Answer: Option A
Solution (By JKSSB Mock Tests)
Responsive Design View inside browser DevTools lets developers simulate various device viewports, touch interactions, and network throttling states directly on their desktop monitors.
This question belongs to: Computer Internet and Web Technologies
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Which of the following is a type of web cookie that is deleted when the browser is closed?
A. Persistent cookie
B. Secure cookie
C. Session cookie
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Correct Answer: Option C

Explanation:
Session cookies (non-persistent) exist only until the browser is closed, while persistent cookies have an expiration date.
This question belongs to: Computer Internet and Web Technologies
Question #2
What is the purpose of the 'same-origin policy' in web browsers?
A. To block pop-ups
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C. To prevent scripts from accessing data from different origins
D. To enforce HTTPS usage
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Correct Answer: Option C

Explanation:
The same-origin policy restricts how documents or scripts loaded from one origin can interact with resources from another origin, protecting against attacks like CSRF and data theft.
This question belongs to: Computer Internet and Web Technologies
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Which of the following is a service that allows users to register domain names and host websites?
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Correct Answer: Option A

Explanation:
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This question belongs to: Computer Internet and Web Technologies
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