Which of the following is a valid scheme in a URL? MCQ with Answer and Explanation

Question
Which of the following is a valid scheme in a URL?
A. ftp
B. http
C. https
D. All of the above
Answer: Option D
Solution (By JKSSB Mock Tests)
http, https, and ftp are all valid URL schemes (protocols).
This question belongs to: Computer Internet and Web Technologies
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Question #1
Which of the following is a technology used for server-side scripting?
A. HTML
B. PHP
C. JavaScript (client-side)
D. CSS
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Correct Answer: Option B

Explanation:
PHP is a widely-used server-side scripting language for web development, while JavaScript is typically client-side, and CSS/HTML are for presentation and structure.
This question belongs to: Computer Internet and Web Technologies
Question #2
Which of the following is a common port used for MySQL database connections?
A. 1433
B. 1521
C. 3306
D. 5432
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Correct Answer: Option C

Explanation:
Port 3306 is the default for MySQL. Port 5432 is PostgreSQL, 1521 is Oracle, 1433 is Microsoft SQL Server.
This question belongs to: Computer Internet and Web Technologies
Question #3
Which type of internet data asset functions as an encrypted mathematical signature proving a website's domain ownership status, enabling secure HTTPS traffic validation?
A. Local Cache Index table
B. Sitemap Schema layout file
C. Robots Rule Entry text block
D. Digital SSL/TLS Certificate
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Correct Answer: Option D

Explanation:
An SSL/TLS certificate is a cryptographic file bound to a specific domain that authenticates the host's identity and enables secure encrypted connections.
This question belongs to: Computer Internet and Web Technologies
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