Grade 12 Quizzes , Questions & Answers

Recent Grade 12 Quizzes

Test your understanding of Angular Framework Basics Quiz essentials with this medium-difficulty assessment. This quiz covers core concepts including components, services, directives, data binding, dependency injection, and...

Questions: 15 | Attempts: 10 | Last updated: May 2, 2026

Sample Question
What is the primary purpose of a component in Angular?

To manage application routing and navigation

To encapsulate a reusable piece of UI with its own logic and template

To provide HTTP communication services

To store global application data

iOS Development Basics Quiz

This iOS Development Basics Quiz evaluates your understanding of core concepts in Apple's mobile development ecosystem. You'll test your knowledge of Swift syntax, UIKit fundamentals, app architecture patterns, and essential iOS...

Questions: 15 | Attempts: 15 | Last updated: May 2, 2026

Sample Question
What is the primary programming language used for modern iOS app development?

Swift

Objective-C

Java

C++

Mobile First Design Principles Quiz

Test your understanding of responsive design and mobile-first development with this comprehensive quiz. This Mobile First Design Principles Quiz evaluates your knowledge of viewport configuration, flexible layouts, media queries,...

Questions: 15 | Attempts: 13 | Last updated: May 2, 2026

Sample Question
What is the core principle of mobile-first design?

Design for desktop first, then adapt to mobile

Design for mobile first, then enhance for larger screens

Design for tablets as the primary device

Design all screen sizes simultaneously without priority

Referential Integrity Basics Quiz

Test your understanding of referential integrity and data relationships with the Referential Integrity Basics Quiz. This assessment covers foreign keys, primary keys, database constraints, and how databases maintain data...

Questions: 15 | Attempts: 10 | Last updated: May 2, 2026

Sample Question
What is referential integrity in a relational database?

A rule ensuring foreign key values match primary key values in related tables

A backup system that copies data across servers

The process of encrypting sensitive database information

A method for organizing table columns alphabetically

Data Streaming Basics Quiz

This Data Streaming Basics Quiz evaluates your understanding of real-time data processing, streaming architectures, and core technologies. Learn how data flows continuously through systems, the differences between batch and...

Questions: 15 | Attempts: 10 | Last updated: May 2, 2026

Sample Question
What is the primary difference between batch processing and stream processing?

Batch processes data in chunks over time; stream processes data continuously in real-time

Batch is faster; stream is slower

Batch uses databases; stream uses APIs

Batch handles small data; stream handles large data

Fact and Dimension Tables Quiz

This Fact and Dimension Tables Quiz evaluates your understanding of star schema design and data warehouse architecture. Learn how fact tables store measurable events and dimension tables provide context for analysis. Master the...

Questions: 15 | Attempts: 18 | Last updated: May 2, 2026

Sample Question
What is the primary purpose of a fact table in a data warehouse?

Store numerical measures and transaction data

Define business rules and constraints

Archive historical records

Manage user access permissions

Execution Plan Operators Quiz

This Execution Plan Operators Quiz tests your understanding of database query execution and optimization. Learn how operators like joins, scans, and aggregations work in execution plans. Master the skills to analyze query...

Questions: 15 | Attempts: 19 | Last updated: May 2, 2026

Sample Question
What does a Sequential Scan operator do in an execution plan?

Reads all rows from a table in order

Reads only indexed rows

Skips rows based on conditions

Sorts rows before reading

Query Rewriting Techniques Quiz

This quiz tests your understanding of query rewriting techniques used in database optimization. You'll explore how queries are transformed to improve performance, reduce execution time, and use indexes more effectively. The Query...

Questions: 15 | Attempts: 10 | Last updated: May 2, 2026

Sample Question
What is query rewriting in database optimization?

Rewriting a query to produce the same result more efficiently

Changing the database schema to match the query

Converting SQL to a different programming language

Removing all WHERE clauses from a query

Deadlock Detection Basics Quiz

This Deadlock Detection Basics Quiz evaluates your understanding of how systems detect and manage deadlocks in concurrent environments. You will explore circular wait conditions, resource allocation graphs, and detection...

Questions: 15 | Attempts: 13 | Last updated: May 2, 2026

Sample Question
What is a deadlock in a concurrent system?

A situation where two or more processes cannot proceed because each waits for a resource held by another

A process that terminates unexpectedly

A lock that cannot be released by any process

A temporary delay in process execution

SQL Conditional Expressions Quiz

Test your understanding of SQL conditional expressions and how they control data retrieval and manipulation. This SQL Conditional Expressions Quiz covers IF, CASE, BETWEEN, IN, and comparison operators at an intermediate level....

Questions: 15 | Attempts: 11 | Last updated: May 2, 2026

Sample Question
Which SQL keyword is used to test if a value exists within a specified range?

BETWEEN

IN

LIKE

EXISTS

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