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.
_________ is a technique used to distribute user data across multiple database nodes to prevent bottlenecks.
- A. Sharding
- B. Replication
- C. Indexing
- D. Partitioning
Explanation
Answer: Sharding Sharding is a technique where user data is horizontally partitioned across multiple database nodes. It helps distribute the load and prevents bottlenecks by spreading data across different shards.
Implementing efficient _________ is crucial for delivering personalized content and recommendations on a social media platform.
- A. Content Delivery Network (CDN)
- B. Caching
- C. Load Balancing
- D. Indexing
Explanation
Answer: Caching Implementing efficient caching is crucial for delivering personalized content on a social media platform. Caching involves storing frequently accessed data to reduce the load on the backend and improve response times.
Utilizing _________ can help reduce latency and improve the responsiveness of a social media platform's user interface.
- A. Content Delivery Network (CDN)
- B. Sharding
- C. Load Balancing
- D. Replication
Explanation
Answer: Content Delivery Network (CDN) Utilizing Content Delivery Network (CDN) can help reduce latency by caching and delivering content from servers closer to the user. This improves the responsiveness of a social media platform's user interface.
_________ enables a social media platform to maintain data consistency and availability across distributed servers.
- A. Data Sharding
- B. Replication
- C. Consistent Hashing
- D. Load Balancing
Explanation
Answer: Replication Replication enables a social media platform to maintain data consistency and availability across distributed servers by duplicating data on multiple nodes. This helps enhance fault tolerance and reduce latency.
Ensuring _________ is essential for enabling seamless scalability in a social media platform as the user base grows.
- A. Horizontal Scaling
- B. Data Compression
- C. Strong Authentication
- D. Vertical Scaling
Explanation
Answer: Horizontal Scaling Horizontal Scaling is essential for enabling seamless scalability in a social media platform as the user base grows. It involves adding more servers to distribute the load and accommodate increasing user activity.
Implementing _________ helps in efficiently managing user-generated content and interactions in a scalable social media platform.
- A. Content Delivery Network (CDN)
- B. Caching
- C. Database Sharding
- D. Rate Limiting
Explanation
Answer: Database Sharding Implementing Database Sharding helps in efficiently managing user-generated content and interactions in a scalable social media platform by partitioning the database into smaller, manageable shards. Each shard can be hosted on different servers.
In a scenario where a social media platform experiences a sudden surge in user registrations, which scaling strategy would be most appropriate to handle the increased load while maintaining performance and availability?
- A. Horizontal Scaling
- B. Vertical Scaling
- C. Load Balancing
- D. Sharding
Explanation
Answer: Horizontal Scaling Horizontal scaling, or adding more servers to distribute the load, is an effective strategy for handling increased user registrations without compromising performance and availability. Load balancing can further enhance the distribution of incoming requests.
In the event of a database failure in a social media platform, how can data replication contribute to maintaining service continuity and data integrity?
- A. Data replication ensures multiple copies of data across different servers
- B. Data replication improves query performance
- C. Data replication eliminates the need for backups
- D. Data replication reduces storage costs
Explanation
Answer: Data replication ensures multiple copies of data across different servers Data replication involves creating and maintaining multiple copies of data across different servers. In the event of a database failure, the system can switch to a replica, ensuring service continuity and preserving data integrity.
A social media platform is planning to introduce a new feature that allows users to stream live videos. What architectural changes might be necessary to ensure scalability and seamless user experience for this feature?
- A. CDN Integration
- B. Database Indexing
- C. Caching Mechanisms
- D. Microservices Architecture
Explanation
Answer: CDN Integration CDN integration can enhance scalability and user experience for live video streaming. Content Delivery Networks (CDNs) help distribute video content globally, reducing latency and ensuring a seamless streaming experience for users.
What is a critical aspect of scalability for an e-commerce platform?
- A. Efficient handling of concurrent user sessions
- B. Implementation of complex algorithms
- C. Use of decorative visuals for enhanced user experience
- D. Integration of blockchain technology
Explanation
Answer: Efficient handling of concurrent user sessions Scalability in an e-commerce platform involves efficiently handling concurrent user sessions to ensure smooth user experience during peak times. This is crucial for handling a large number of users simultaneously.
Which component is essential for ensuring high availability in an e-commerce system?
- A. Load Balancer
- B. Caching Mechanism
- C. User Authentication
- D. Data Encryption
Explanation
Answer: Load Balancer A load balancer is essential for ensuring high availability in an e-commerce system by distributing incoming traffic across multiple servers. It helps prevent server overload and enhances system reliability.
What is a common technique used to improve performance in an e-commerce application?
- A. Content Delivery Network (CDN)
- B. Social Media Integration
- C. Gamification Elements
- D. Dynamic Color Schemes
Explanation
Answer: Content Delivery Network (CDN) Implementing a Content Delivery Network (CDN) is a common technique used to improve performance in an e-commerce application. CDNs cache content on distributed servers, reducing latency and enhancing overall user experience.
Which database design approach is most suitable for handling the complex data structures in an e-commerce platform?
- A. Relational Database
- B. NoSQL Database
- C. In-memory Database
- D. Graph Database
Explanation
Answer: NoSQL Database NoSQL databases are well-suited for handling complex data structures in e-commerce platforms due to their flexibility and ability to store unstructured data efficiently.
What is a key consideration when designing the checkout process for an e-commerce website?
- A. Minimizing Steps
- B. Increasing Authentication Steps
- C. Providing Limited Payment Options
- D. Delaying Confirmation Emails
Explanation
Answer: Minimizing Steps Streamlining the checkout process by minimizing steps is crucial for enhancing the user experience and reducing the likelihood of cart abandonment.
Which architectural pattern is commonly employed to support scalability and fault tolerance in large-scale e-commerce systems?
- A. Microservices
- B. Monolithic Architecture
- C. Client-Server Architecture
- D. Peer-to-Peer Architecture
Explanation
Answer: Microservices Microservices architecture is commonly employed in large-scale e-commerce systems to enhance scalability, fault tolerance, and maintainability by breaking down the application into independent, modular services.
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.
