You want to create a system where different devices can Start() and Stop() but each device does it differently. How should you use interfaces to design this?

hard🚀 Application Q15 of 15

C Sharp (C#) - Interfaces

You want to create a system where different devices can Start() and Stop() but each device does it differently. How should you use interfaces to design this?

ACreate a base class Device with Start and Stop methods and inherit it

BWrite Start and Stop methods directly in each device class without interface

CDefine an interface IDevice with Start and Stop methods, then implement it in each device class

DUse abstract classes only, no interfaces

Step-by-Step Solution

Solution:

Step 1: Understand interface purpose
Interfaces define a contract for methods without implementation, perfect for different device behaviors.
Step 2: Apply interface to devices
Define IDevice with Start and Stop, then each device class implements these methods with its own details.
Final Answer:
Define an interface IDevice with Start and Stop methods, then implement it in each device class -> Option C
Quick Check:
Interface = shared method rules, different implementations [OK]

Quick Trick: Use interfaces for shared method names, different code [OK]

Common Mistakes:

MISTAKES

Using base class limits flexibility
Skipping interface loses contract benefits
Confusing abstract classes with interfaces

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You want to create a system where different devices can Start() and Stop() but each device does it differently. How should you use interfaces to design this?

Step 1: Understand interface purpose

Step 2: Apply interface to devices

Final Answer:

Quick Check:

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