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Grade 12 Quizzes, Questions & Answers

Recent Grade 12 Quizzes

Real Time Dashboard Basics Quiz

Questions: 15 | Attempts: 10 | Last updated: May 1, 2026

Sample Question
What is the primary purpose of a real-time dashboard?

Display live data and metrics to enable immediate decision-making

Store historical data for archival purposes

Generate printed reports at scheduled intervals

Manage user account permissions and access control

Distributed Computing Basics Quiz

Questions: 15 | Attempts: 10 | Last updated: May 1, 2026

Sample Question
What is the primary purpose of a distributed system?

To increase processing power and reliability by connecting multiple computers

To replace all single-computer systems

To eliminate the need for network infrastructure

To reduce the total cost of hardware

Data Volume Scalability Quiz

Questions: 15 | Attempts: 10 | Last updated: May 1, 2026

Sample Question
What is the primary difference between vertical and horizontal scaling?

Vertical adds more servers; horizontal upgrades existing hardware

Vertical upgrades hardware on one machine; horizontal adds more servers

Vertical reduces costs; horizontal increases them

Vertical is for databases only; horizontal is for applications only

Apache Spark Overview Quiz

Questions: 15 | Attempts: 10 | Last updated: May 1, 2026

Sample Question
What does Apache Spark primarily provide as a computing framework?

A relational database management system

A unified engine for large-scale data processing

A web server for hosting applications

A file storage system only

Null and Alternative Hypothesis Quiz

Questions: 15 | Attempts: 15 | Last updated: May 1, 2026

Sample Question
What is the null hypothesis typically denoted as?

H₀

H₁

Ha

Hx

Missing Data Handling Quiz

Questions: 15 | Attempts: 10 | Last updated: May 1, 2026

Sample Question
What is the primary reason missing data occurs in datasets?

Data collection errors or incomplete responses

Random computer glitches only

Intentional removal by analysts

Data format incompatibility

Gesture Recognition Basics Quiz

Questions: 15 | Attempts: 10 | Last updated: May 1, 2026

Sample Question
What is gesture recognition?

The ability of a computer to identify and interpret human hand or body movements

A method for storing video files on a computer

The process of translating written text into speech

A type of encryption used in cybersecurity

Scene Understanding Basics Quiz

Questions: 15 | Attempts: 10 | Last updated: May 1, 2026

Sample Question
In a photograph, what is the term for the area that appears closest to the viewer?

Foreground

Background

Middle ground

Depth of field

Face Recognition Basics Quiz

Questions: 15 | Attempts: 10 | Last updated: May 1, 2026

Sample Question
What is facial recognition primarily used for in modern security systems?

Identifying individuals based on unique facial features

Measuring a person's height and weight

Recording audio conversations

Analyzing skin color preferences

Computer Vision Basics Quiz

Questions: 15 | Attempts: 14 | Last updated: May 1, 2026

Sample Question
What is object detection in computer vision?

Identifying and locating objects within images or video

Converting images to grayscale

Increasing image brightness

Removing image noise

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