Fusion Informatics Interview Questions and Answers

Room Database in Android allows for efficient CRUD operations using annotations and DAO interfaces.

• 1. Create Entity: Define a data class with @Entity annotation. Example: @Entity(tableName = 'users') data class User(val id: Int, val name: String)

• 2. Create DAO: Define an interface with CRUD methods. Example: @Dao interface UserDao { @Insert fun insert(user: User) }

• 3. Database Class: Extend RoomDatabase and define a...read more

Smoke testing is a quick and shallow test to check if the basic functionalities of the application are working. Sanity testing is a more thorough test to check if the major functionalities of the application are working after changes have been made.

• Smoke testing is done to check if the application is stable enough for further testing.

• Sanity testing is done to check if the changes made to the application have not a...read more

HTTP is unsecured while HTTPS is secured with SSL/TLS encryption.

• HTTP stands for Hypertext Transfer Protocol while HTTPS stands for Hypertext Transfer Protocol Secure.

• HTTP operates on port 80 while HTTPS operates on port 443.

• HTTP is vulnerable to attacks while HTTPS is secure due to SSL/TLS encryption.

• HTTPS is used for secure online transactions such as online banking, e-commerce, etc.

Retesting is testing the same functionality again after fixing the defects while regression testing is testing the entire system after making changes to ensure that the changes did not affect the existing functionality.

• Retesting is done to ensure that the defects reported earlier have been fixed.

• Regression testing is done to ensure that the changes made to the system did not affect the existing functionality.

• Retes...read more

Integration testing checks if different modules work together, Black box testing checks functionality without knowing code, Regression testing checks if changes affect existing functionality.

• Integration testing verifies if different modules work together as expected

• Black box testing checks functionality without knowing the code

• Regression testing checks if changes affect existing functionality

• Integration testing is...read more