Service Discovery MCQs Solution | TCS Fresco Play
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1. Identify the key aspects for a successful service discovery solution
All the options mentioned
2. Service Discovery can perform the following for the services
All the options mentioned
3. Which of the registration patterns is best suited for complex architecture
Third party registration pattern
4. Identify the right service registry solutions that supports discovery
Zookeeper
5. In _ pattern, clients connect with the backend services directly
Client side discovery pattern
6. _ supports load balancing in addition to service discovery
Ribbon
7. Is it possible for any service discovery tool to satisfy all the three guarantees (Consistency, Availability, Partition) in a distributed environment?
No. Only two of the guarantees can be achieved
8. In distributed systems, to service any Read / Write request, a leader node is mandatory. Is this statement correct
No. Leader node is required for only for write request
9. The process of consensus in distributed systems is essential to achieve
All the options mentioned
10. In distributed systems, knowing that partition can always occur, what kind of service discovery tool would you prefer?
One that follows AP (Availability, Partition)
11. In server side discovery pattern, load balancing and routing of the request to the service instances is taken care of by the service discovery tool itself. Is it true or false?
True
12. Service registration can happen by how many ways
3
13. Can an external service or process poll for all the services and update the service registry for discovery?
Yes, it is possible
14. How can one ensure high availability of service discovery solution so that services can be easily discovered even in the event of any failure scenarios. (I) Service registry information exchange among clusters. (II) Service clients caching the service registry information
I & II
15. _ is the foundation for proper monitoring, load balancing and routing in distributed systems
Collecting the application functionality details
16. _ is associated to every user request to track the service requests placed by the users
Instance Id
17. Identify the correct properties of consensus
All the options mentioned
18. AWS Elastic Load Balancer(ELB) is an example following _ pattern of service discovery
Server side discovery pattern
19. _ is an election algorithm in which a coordinator is elected by highest process id silencing the other nodes in the system
Palos Algorithm
20. What happens when heart beat from any service instance is not received by the service register
The instance is disregarded for service availability
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