Identify Factors That Impact Performance ECS-DESIGN Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   Which ECS configuration setting is commonly tuned to optimize performance for workloads with many small objects?

   • AThe NTP server address
   • BThe DNS server IP address
   • CThe object cache size
   • DThe SMTP relay host
   Reveal Solution Discussion Select an answer first
2. 2expert · hard

   A genomics research lab stores large files (1–10 GB) on ECS. The workload is 50% sequential writes and 50% random reads of small sections within files. They currently use a single bucket with default settings. Performance is acceptable for writes but reads are slow. Which combination of changes would most improve read performance?

   • AEnable compression and decrease chunk size
   • BDecrease chunk size and enable caching
   • CIncrease chunk size and enable caching
   • DIncrease replication and increase chunk size
   Reveal Solution Discussion Select an answer first
4. 3application · medium

   A media archive stores large video files (5–20 GB) that are accessed sequentially for playback. The current setup uses default object chunking. Users report slow start times for video playback. Which data layout or access pattern adjustment would most improve initial read performance?

   • ADecrease chunk size to parallelize reads
   • BIncrease chunk size to reduce the number of chunks to fetch
   • CIncrease replication to improve read locality
   • DEnable compression to reduce data transferred
   Reveal Solution Discussion Select an answer first
5. 4expert · hard

   A large enterprise runs a mixed workload on ECS: 70% small objects (under 64 KB) with high read concurrency, and 30% large objects (over 10 MB) with sequential writes. They are experiencing high latency for small object reads. The storage nodes have ample CPU and memory. Which hardware or configuration factor is most likely the bottleneck?

   • AReplication factor
   • BNetwork bandwidth
   • CChunk size
   • DDisk IOPS
   Reveal Solution Discussion Select an answer first
6. 5foundation · easy

   How does a workload with a high read/write ratio typically affect ECS performance compared to a write-heavy workload?

   • AIt increases the need for CPU resources to handle parity calculations
   • BIt always causes higher write amplification
   • CIt has no impact on performance because ECS treats all I/O the same
   • DIt generally results in lower latency for read operations because reads can be served from cache or optimized paths
   Reveal Solution Discussion Select an answer first