Minigame

What are microservices ?

• A design pattern used primarily in functional programming and object-oriented programming

• Microservices are used to build monolithic architecture

• Microservices are a software architectural style in which a large application is built as a collection of small, independent, and scalable services.

• None of the above

Find the cities name with the condition and temperature from table 'whether' where condition = sunny or cloudy but temperature >= 60.

• SELECT city_name FROM whether WHERE (condition = 'sunny' OR condition = 'cloudy') AND temperature >= 60
• SELECT city_name FROM whether WHERE condition = 'cloudy' AND temperature >= 60
• SELECT city_name FROM whether WHERE condition = 'sunny' OR temperature >= 60
• SELECT city_name FROM whether WHERE condition = 'sunny' AND temperature >= 60

What are some benefits of using microservices ?

• Improved scalability, flexibility, resilience. and maintainability.

• Increased complexity, decreased performance, and higher costs.
• Limited scalability, reduced flexibility, and increased maintenance.
• Less efficient resource utilization, decreased modularity, and higher development time.

What is the SQL stand for ?

• Structured Query Language
• System Query Language
• Structured Query Logic
• Sequential Query Language

How many Primary keys and Foreign keys can have in a table?

• 1 primary key, no foreign keys
• 1 primary key, 1 foreign key
• multiple primary keys, 1 foreign key
• 1 primary key, multiple foreign keys

What is the benefit of using a message broker in a microservices architecture ?

• The benefit of using a message broker in a microservices architecture is to make communication between microservices less reliable.
• The benefit of using a message broker in a microservices architecture is to create tight coupling between microservices.
• The benefit of using a message broker in a microservices architecture is to provide reliable and scalable communication between microservices.
• The benefit of using a message broker in a microservices architecture is to increase latency and decrease performance.

What is the difference between a service registry and a service discovery ?

• A service registry is a process of dynamically locating and connecting to available services, while service discovery is the process of registering services in a centralized database.
• A service registry keeps track of all microservices, while service discovery helps clients find the correct microservice.

• A service registry and a service discovery are the same thing.
• None of the above.

What is the difference between database per service and shared database ?

• Database per service provides better performance and scalability, while shared database can cause bottlenecks and slow down the system.
• Database per service allows for easier maintenance and updates, while shared database can result in conflicts and compatibility issues.
• Database per service allows for better isolation and scalability, while shared database can lead to dependencies and performance issues.
• Database per service offers more flexibility and customization options, while shared database limits the ability to tailor the database to specific service requirements.

What are the different levels of a testing pyramid?

• manual testing, automated testing, and performance testing
• white-box testing, black-box testing, and gray-box testing
• unit testing, integration testing, and end-to-end testing
• system testing, acceptance testing, and regression testing

The ……………. key word eliminates duplicate rows from the result of a SELECT statement. ​