System Design
15 questions — answer mentally, then read the explanations
What you'll learn
- Try to answer each question before reading the explanation
- Cover System Design topics in system design
Questions
Read each question and options, then check the explanation below.
Which of the following is NOT a typical challenge in Microservices Architecture?
- A. Service communication, data consistency, distributed tracing, centralized configuration
- B. Service discovery, versioning, latency, security
- C. Tight coupling, monolithic thinking, shared database, testing complexities
- D. Continuous deployment, independent scaling, polyglot persistence, monitoring
Explanation
Answer: Tight coupling, monolithic thinking, shared database, testing complexities Challenges in Microservices Architecture typically involve service communication, data consistency, distributed tracing, and centralized configuration. Tight coupling and shared databases are issues to avoid.
How does Microservices Architecture promote scalability and flexibility?
- A. By allowing each service to scale independently, utilizing containerization, and facilitating technology diversity
- B. By enforcing a monolithic structure, relying on shared resources, and limiting technology choices
- C. By centralizing all components for easier management, avoiding containerization, and adhering to a single technology stack
- D. By relying on a shared database, minimizing service independence, and limiting technology diversity
Explanation
Answer: By allowing each service to scale independently, utilizing containerization, and facilitating technology diversity Microservices Architecture promotes scalability and flexibility by enabling each service to scale independently, utilizing containerization for efficient resource usage, and allowing the use of various technologies based on specific service requirements.
What are some strategies for inter-service communication in Microservices Architecture?
- A. Synchronous communication via HTTP/REST
- B. Asynchronous communication via message queues
- C. Direct database queries between services
- D. Shared in-memory data structures
Explanation
Answer: Synchronous communication via HTTP/REST Microservices commonly use synchronous communication via HTTP/REST for simplicity and ease of implementation. Asynchronous communication, such as message queues, is also a valid strategy for decoupling services.
How does Microservices Architecture impact deployment and testing strategies?
- A. Simpler deployment with monolithic-like processes
- B. More complex deployment with centralized control
- C. Easier testing due to isolated and independent services
- D. Reduced need for automated testing
Explanation
Answer: Easier testing due to isolated and independent services Microservices Architecture impacts deployment by allowing independent deployment of services, and testing becomes easier due to the isolation of services, enabling focused testing of individual components.
What role does containerization technology play in Microservices Architecture?
- A. Containerization simplifies microservices deployment
- B. Containerization increases service coupling
- C. Containerization has no impact on microservices
- D. Containerization leads to increased monolithic architecture
Explanation
Answer: Containerization simplifies microservices deployment Containerization simplifies microservices deployment by encapsulating each service and its dependencies in a container, ensuring consistency across various environments. It facilitates easy scaling and resource isolation.
_________ is a pattern used in Microservices Architecture to handle failures and ensure system resilience.
- A. Circuit Breaker
- B. Load Balancer
- C. Singleton
- D. Observer
Explanation
Answer: Circuit Breaker The Circuit Breaker pattern is commonly used in Microservices Architecture to handle failures. It helps in preventing cascading failures and ensures system resilience by gracefully handling faults.
In Microservices Architecture, _________ are small, self-contained units of deployment that encapsulate both the application and its dependencies.
- A. Containers
- B. Monoliths
- C. Modules
- D. Components
Explanation
Answer: Containers Containers in Microservices Architecture are small, self-contained units of deployment that encapsulate both the application and its dependencies. They provide isolation and flexibility in deploying and scaling services.
Implementing _________ in Microservices Architecture helps in maintaining consistency and reliability across distributed systems.
- A. Service Discovery
- B. Event Sourcing
- C. Microservices
- D. Distributed Transactions
Explanation
Answer: Event Sourcing Implementing Event Sourcing in Microservices Architecture helps in maintaining consistency and reliability across distributed systems by capturing and storing events as a source of truth for the system's state.
In a scenario where a company wants to migrate from a Monolithic Architecture to Microservices Architecture, what steps would you recommend to ensure a smooth transition?
- A. Conduct a complete rewrite of the entire system
- B. Migrate all services simultaneously
- C. Gradually decompose the monolith into microservices
- D. Stick to the monolithic architecture for stability
Explanation
Answer: Gradually decompose the monolith into microservices A gradual decomposition of the monolith into microservices is recommended to ensure a smooth transition. This allows the company to incrementally migrate functionality, reducing risks and ensuring stability.
In a Microservices Architecture, if one service experiences a sudden surge in traffic, how can it be scaled independently without affecting other services?
- A. Scale all services uniformly
- B. Manually adjust resources for the affected service
- C. Implement auto-scaling for the entire system
- D. Use containerization and orchestration to scale the specific service
Explanation
Answer: Use containerization and orchestration to scale the specific service Using containerization and orchestration allows for independent scaling of specific services in a Microservices Architecture, ensuring that the surge in traffic for one service does not impact others.
A company is considering adopting Microservices Architecture for its new project. How would you advise them to design their system to ensure resilience and fault tolerance?
- A. Design each service to depend heavily on others for fault tolerance
- B. Implement a monolithic backup system for critical services
- C. Integrate a centralized logging system
- D. Build services with independent failure domains and implement retry mechanisms
Explanation
Answer: Build services with independent failure domains and implement retry mechanisms To ensure resilience and fault tolerance in a Microservices Architecture, it's essential to design services with independent failure domains and incorporate retry mechanisms for improved reliability.
What is Event-Driven Architecture primarily focused on?
- A. Managing databases efficiently
- B. Decoupling system components and enabling asynchronous communication
- C. Ensuring high availability of servers
- D. Optimizing code execution speed
Explanation
Answer: Decoupling system components and enabling asynchronous communication Event-Driven Architecture is primarily focused on decoupling system components and enabling asynchronous communication. This allows components to operate independently, enhancing flexibility and scalability.
Which of the following is a characteristic of Event-Driven Architecture?
- A. Tight coupling between components
- B. Synchronous communication
- C. Dependency on a centralized server
- D. Asynchronous communication
Explanation
Answer: Asynchronous communication Asynchronous communication is a characteristic of Event-Driven Architecture. It enables components to communicate without waiting for immediate responses, promoting scalability and responsiveness.
How does Event-Driven Architecture handle communication between components?
- A. Using only synchronous communication
- B. Through direct method calls
- C. Utilizing asynchronous communication through events
- D. Restricting communication to a single channel
Explanation
Answer: Utilizing asynchronous communication through events Event-Driven Architecture handles communication between components by utilizing asynchronous communication through events. Components emit events, and others subscribe to those events, allowing for decoupled and efficient communication.
What role does a message broker play in an Event-Driven Architecture?
- A. Facilitates communication between components by handling the routing of messages
- B. Manages user authentication and authorization
- C. Stores data in a centralized repository
- D. Optimizes database queries for better performance
Explanation
Answer: Facilitates communication between components by handling the routing of messages A message broker in Event-Driven Architecture facilitates communication between components by handling the routing of messages. It ensures seamless information exchange among different parts of the system.
Today's exercise: Review & recall
Revisit any questions you hesitated on. Write one-line answers in your own words.
Steps
- 1
First pass
Read each question and pick an answer without looking at the explanation.
- 2
Second pass
Expand explanations only for questions you missed or were unsure about.
- 3
Notes
Jot down 3 terms or patterns you want to remember from this batch.
