What mechanism does an online streaming video channel implement over web connections to adjust video quality dynamically on the fly based on fluctuations in a user's real-time internet bandwidth? MCQ with Answer and Explanation

Question
What mechanism does an online streaming video channel implement over web connections to adjust video quality dynamically on the fly based on fluctuations in a user's real-time internet bandwidth?
A. Running outbound SMTP mail transport routines
B. Adaptive Bitrate Streaming (ABS)
C. Static FTP file compression adjustments
D. Altering local hardware DNS settings dynamically
Answer: Option B
Solution (By JKSSB Mock Tests)
Adaptive Bitrate Streaming monitors network conditions and device performance in real time, shifting between higher and lower quality video streams to prevent playback buffering.
This question belongs to: Computer Internet and Web Technologies
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Question #1
What is the purpose of the 'Cache-Control' HTTP header?
A. To specify caching policies for the resource
B. To control the format of the response
C. To set the language of the content
D. To authenticate the user
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Correct Answer: Option A

Explanation:
The Cache-Control header is used to define caching directives such as max-age, no-cache, and private, controlling how and for how long the resource can be cached.
This question belongs to: Computer Internet and Web Technologies
Question #2
Which of the following parameters represents an accurate description of the web development framework component called 'API' (Application Programming Interface)?
A. A specialized local browser button designed to wipe history traces
B. The physical processing chip architecture used inside server hubs
C. An unlinked text archive folder stored on network devices
D. A set of defined protocols and tools that allow different software applications to communicate and exchange data with one another over the web
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Correct Answer: Option D

Explanation:
Web APIs define clear communication contracts and endpoints, allowing backend services, mobile apps, and third-party tools to integrate and share data seamlessly.
This question belongs to: Computer Internet and Web Technologies
Question #3
Which of the following is a common port used for MySQL database connections?
A. 1521
B. 5432
C. 1433
D. 3306
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Correct Answer: Option D

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
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