Q16 (20) Choose the description that is incorrect regarding serverless architecture.
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(20)**
Choose the description that is incorrect regarding serverless architecture.
Show answer & explanation
Option C is incorrect because serverless architectures do not have zero-second initialization. Cold starts are a well-known limitation—when a function hasn't run recently, there's a noticeable delay (often 100ms to several seconds) as the runtime environment spins up. Options A, B, and D accurately describe real serverless characteristics: on-demand scaling, pay-per-use billing with no idle charges, and abstraction from server management.
Step-by-step Derivation:
Analyze each statement against serverless architecture fundamentals:
A) Correct—This is the core promise of serverless: functions execute only when triggered, scale automatically, and you pay only for execution time, reducing costs during idle periods.
B) Correct—Serverless uses consumption-based billing (e.g., AWS Lambda charges per 100ms of execution and number of invocations), with zero cost when idle.
C) Incorrect—Cold start latency is a documented limitation. When a function hasn't run recently, initialization can take 100ms to several seconds depending on runtime and code size. 'Zero-second' initialization is inaccurate.
D) Correct—Serverless abstracts infrastructure, but this reduces your ability to tune OS-level settings compared to IaaS, where you have direct VM access.