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Design Patterns Tutorial
BOSS QUIZ
10 questions · 5 minutes · pass at 70% to clear the track.
05:00
Start
Q1.
Over-using patterns leads to…
from Intro
Simpler code
Over-engineering / hidden indirection
Better performance always
Fewer tests
Q2.
The S in SOLID stands for…
from SOLID
Single Responsibility
Stable Interface
Strict Typing
Singleton
Q3.
The Gang of Four book groups patterns into…
from Intro
Creational, Structural, Behavioural
Frontend, Backend, Mobile
OOP, FP, Reactive
GUI, CLI, Service
Q4.
Liskov's rule says…
from SOLID
Subtypes must work wherever the supertype does
Subclasses must be longer
Inheritance is bad
Interfaces must be empty
Q5.
Singleton guarantees…
from Singleton
One instance per process
One instance per thread
One instance per request
Global state always
Q6.
A risk is…
from CQRS
Eventual consistency for reads
Faster everything
Less code always
No state
Q7.
The D in SOLID stands for…
from SOLID
Decorator
Dependency Inversion
DRY
Decoupling
Q8.
CQRS pairs naturally with…
from CQRS
Event sourcing
CSS-in-JS
Singletons
Bit packing
Q9.
Patterns are best thought of as…
from Intro
Required boilerplate
Shared vocabulary + starting shapes
Frameworks
Linters
Q10.
A common downside is…
from Singleton
Faster code
Harder testing — implicit shared state
Lower memory
Better encapsulation
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