CV0-004 · Question #160
A log-parsing application requires significant processing power to ingest the logs streaming from web servers. The engineering team presents the cloud architect with four proposals using the same…
The correct answer is A. Four instances of 4vCPU, 8GB RAM, 80GB SSD. Using four smaller instances instead of two larger ones minimizes the blast radius of a single instance failure - losing one of four instances removes only 25% of capacity, whereas losing one of two instances removes 50%. Since all four proposals use the same underlying…
Question
A log-parsing application requires significant processing power to ingest the logs streaming from web servers. The engineering team presents the cloud architect with four proposals using the same underlying hardware. Which of the following should the cloud architect select in order to minimize the impact of an instance failure while keeping the cost as low as possible?
Options
- AFour instances of 4vCPU, 8GB RAM, 80GB SSD
- BFour instances of 4vCPU, 8GB RAM, 80GB HDD
- CTwo instances of 8vCPU, 16GB RAM, 80GB SSD
- DTwo instances of 8vCPU, 16GB RAM, 80GB HDD
How the community answered
(23 responses)- A74% (17)
- B4% (1)
- C4% (1)
- D17% (4)
Explanation
Using four smaller instances instead of two larger ones minimizes the blast radius of a single instance failure - losing one of four instances removes only 25% of capacity, whereas losing one of two instances removes 50%. Since all four proposals use the same underlying hardware, the total compute cost is equivalent, satisfying the cost constraint. SSD is chosen over HDD (Option B) because log-parsing and streaming ingestion is I/O intensive - SSDs provide faster read/write speeds critical for processing high-throughput log streams. The two-instance options (C and D) offer less fault tolerance despite the same total compute, and HDD-based options are slower for this workload type.
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