Automatically adding or removing cloud instances based on load is called:

Question

Options

• AHorizontal Scaling
• BSuper Scaling
• CHyper Scaling
• DVertical Scaling

• A
  92% (35)
• B
  5% (2)
• D
  3% (1)

Explanation

Horizontal Scaling (A) is correct because it refers to dynamically adding or removing instances (servers/nodes) to handle changes in load - scaling out when demand rises and scaling in when it drops. This is exactly what cloud auto-scaling groups do.

Vertical Scaling (D) means increasing the resources (CPU, RAM) of an existing instance rather than adding new ones - it doesn't involve automatic instance count changes. Super Scaling (B) and Hyper Scaling (C) are not standard cloud computing terms and serve as plausible-sounding distractors.

Memory tip: Think of it spatially - horizontal means spreading across more machines (like adding more lanes to a highway), while vertical means growing upward on a single machine (like making the highway lanes wider). Auto-scaling = adding lanes = horizontal.

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