Which of the following is a component of a web browser that interprets JavaScript code? MCQ with Answer and Explanation

Which of the following is a component of a web browser that interprets JavaScript code?
A. Cache manager
B. JavaScript engine
C. Rendering engine
D. Network stack
Answer: Option B
Solution (By JKSSB Mock Tests)
The JavaScript engine (e.g., V8 for Chrome) parses and executes JavaScript code within the browser.

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Practice More Internet and Web Technologies Questions

Question #1
Which of the following is a markup language used to define the structure of data, often used in web syndication (e.g., RSS)?
A. JSON
B. HTML
C. YAML
D. XML

Correct Answer: Option D


Explanation:
XML is a markup language commonly used for RSS feeds and other data formats, though JSON is also used.

This question belongs to: Computer Internet and Web Technologies
Question #2
Which of the following is a mechanism for websites to request permission to access user's location, camera, etc.?
A. HTTP headers
B. Cookies
C. Web API (Permissions API)
D. URL parameters

Correct Answer: Option C


Explanation:
The Permissions API allows websites to request permissions for sensitive features like geolocation, camera, microphone, etc.

This question belongs to: Computer Internet and Web Technologies
Question #3
What type of attack involves an adversary secretly intercepting, reading, or altering communication messages between two web parties without either side knowing the channel is compromised?
A. SQL Injection vulnerability
B. Man-in-the-Middle (MitM) Attack
C. Denial of Service crash sequence
D. Phishing email broadcast

Correct Answer: Option B


Explanation:
A Man-in-the-Middle (MitM) attack occurs when a hacker inserts themselves into a communication session between a client and server to eavesdrop or modify data in transit.

This question belongs to: Computer Internet and Web Technologies