[Solved] Given this pseudocode snippet, what will be printed after a config update triggers the callback?... Given this pseudocode snippet, what will be printed after a config update triggers the callback? | Microservices

Microservices - Configuration and Secrets Management

Given this pseudocode snippet, what will be printed after a config update triggers the callback?

config = {"mode": "prod"}
function onConfigChange(newConfig) {
  config = newConfig
  print(config["mode"])
}
// Config update arrives
onConfigChange({"mode": "dev"})

Aprod

Bdev

Cundefined

Derror

Step-by-Step Solution

Solution:

Step 1: Analyze initial config and callback
Initial config mode is "prod" but callback replaces it with newConfig.
Step 2: Check what callback prints
Callback prints newConfig["mode"] which is "dev".
Final Answer:
dev -> Option B
Quick Check:
Callback prints updated config mode [OK]

Quick Trick: Callback prints new config value after update [OK]

Common Mistakes:

Printing old config instead of new
Assuming undefined because of variable scope
Expecting error due to missing keys

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Given this pseudocode snippet, what will be printed after a config update triggers the callback?

Step 1: Analyze initial config and callback

Step 2: Check what callback prints

Final Answer:

Quick Check:

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