Cloud Concepts & AWS Core Services Flashcards
7 cards from real CLF-C02 practice questions. Tap to flip, then mark Knew It or Still Learning โ missed cards come back until you master them.
Read the first 7 Cloud Concepts & AWS Core Services flashcards as text
A company is evaluating cloud providers and wants to benefit from the massive purchasing power AWS has built through millions of customers. Which cloud advantage does this describe?
Answer: Benefit from massive economies of scale
AWS aggregates usage from hundreds of thousands of customers, achieving economies of scale that result in lower pay-as-you-go prices.
Which AWS storage class is designed for data that is accessed less than once a month and offers the lowest storage cost in S3?
Answer: S3 Glacier Deep Archive
S3 Glacier Deep Archive is the lowest-cost S3 storage class, designed for long-term retention of data accessed rarely (once or twice a year).
Which AWS networking component acts as a virtual firewall controlling inbound and outbound traffic at the instance level?
Answer: Security Group
Security Groups are stateful virtual firewalls applied to EC2 instances that control inbound and outbound traffic at the instance level.
A company wants to decouple application components so that a failure in one component does not affect others. Which AWS service best supports this pattern?
Answer: Amazon SQS
Amazon SQS (Simple Queue Service) decouples components by storing messages in a queue, so producers and consumers operate independently.
What is an AWS Region?
Answer: A collection of Availability Zones in a geographic area
An AWS Region is a separate geographic area containing multiple, isolated Availability Zones that are physically separated data centers.
Which service provides a fully managed NoSQL key-value and document database with single-digit millisecond performance at any scale?
Answer: Amazon DynamoDB
Amazon DynamoDB is a fully managed NoSQL database that delivers consistent single-digit millisecond performance regardless of scale.
Which AWS pricing model offers the largest discount (up to 90%) compared to On-Demand pricing in exchange for a one- or three-year commitment?
Answer: Spot Instances
Spot Instances use spare AWS capacity and can be up to 90% cheaper than On-Demand, though AWS can reclaim them with a 2-minute warning.