CNX-001 · Question #25
An application is hosted on a three-node cluster in which each server has identical compute and network performance specifications. A fourth node is scheduled to be added to the cluster with three tim
The correct answer is D. Weighted. Assign each of the three original nodes a weight of 1 and the new high-performance node a weight of 3. With weighted balancing, the new node will receive 3 / (1 + 1 + 1 + 3) = 50% of traffic - equal to the combined load on the other three.
Question
An application is hosted on a three-node cluster in which each server has identical compute and network performance specifications. A fourth node is scheduled to be added to the cluster with three times the performance as any one of the preexisting nodes. The network architect wants to ensure that the new node gets the same approximate number of requests as all of the others combined. Which of the following load-balancing methodologies should the network architect recommend?
Options
- ARound-robin
- BLoad-based
- CLeast connections
- DWeighted
How the community answered
(21 responses)- A14% (3)
- B5% (1)
- C5% (1)
- D76% (16)
Explanation
Assign each of the three original nodes a weight of 1 and the new high-performance node a weight of 3. With weighted balancing, the new node will receive 3 / (1 + 1 + 1 + 3) = 50% of traffic - equal to the combined load on the other three.
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