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Practice question
Question 1 / 3
A team runs short, event-driven tasks a few times an hour. They want no servers to provision or patch and to pay only while the code runs. Which service fits best?
- Amazon EC2 with Auto Scaling
- AWS Lambda
- Amazon EMR
- Amazon Lightsail
Correct answer
B. AWS Lambda
Lambda runs your code in response to events, scales on its own and bills for requests and compute time, so an idle function costs nothing. EC2 would keep instances to patch and pay for between runs.
Lambda runs your code in response to events, scales on its own and bills for requests and compute time, so an idle function costs nothing. EC2 would keep instances to patch and pay for between runs.
Backups are read about once a month, must be retrievable in milliseconds, and must survive the loss of an Availability Zone. Which S3 storage class is the most cost-effective?
Standard-IA stores data across multiple Availability Zones with millisecond access at a lower storage price than Standard, plus a per-GB retrieval fee. One Zone-IA keeps one copy in a single zone, and Deep Archive retrievals take hours.
An application on an EC2 instance only needs to read objects in one S3 bucket. Which setup follows the principle of least privilege?
A role gives the instance temporary credentials that rotate on their own, and a policy limited to s3:GetObject on one bucket grants only what the task needs. The other choices grant far more access than reading requires.
0 / 0 correct
PlayCloud lab
AWS sandbox
Host a static website on Amazon S3
- Create an S3 bucket (done)
- Upload index.html (done)
- Turn on static website hosting
- Allow public read access
aws s3 mb s3://td-lab-sitemake_bucket: td-lab-siteaws s3 cp index.html s3://td-lab-site/upload: ./index.html to s3://td-lab-site/index.htmlaws s3 website s3://td-lab-site/ --index-document index.htmlAWS cheat sheet
Compute and storage
- EC2
- Resizable virtual servers in the cloud
- Lambda
- Runs code on events, no servers to manage
- S3
- Object storage for any amount of data
- EBS
- Block storage volumes for EC2
- DynamoDB
- Serverless key-value and document database
- VPC
- Your own isolated network in AWS
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Practice exams for AWS, Azure, Google Cloud, Anthropic, Kubernetes and GitHub
Certification practice exams with full explanations for cloud, AI and developer-tool exams, grouped by brand.
AWS
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Azure
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AZ-400 Microsoft Azure DevOps Engineer Expert Practice ExamsAZ-400 (opens in a new tab)
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Google Cloud
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Anthropic
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Kubernetes
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Most popularAWS Certified Solutions Architect Associate SAA-C03 Practice ExamsSAA-C03400+ QuestionsRated 4.9/5200,000+ Learners (opens in a new tab)
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Most popularAWS Certified Cloud Practitioner CLF-C02 Practice ExamsCLF-C02300+ QuestionsRated 4.9/550,000+ Learners (opens in a new tab)
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AWS Certified Advanced Networking Specialty ANS-C01 Practice ExamsANS-C01100+ QuestionsRated 4.9/510,000+ Learners (opens in a new tab)
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AWS Certified CloudOps Engineer Associate SOA-C03 Practice ExamsSOA-C03 (opens in a new tab)
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AWS Certified Data Engineer Associate DEA-C01 Practice ExamDEA-C01200+ Questions (opens in a new tab)
AWS Certified Generative AI Developer Professional AIP-C01 Practice ExamsAIP-C01 (opens in a new tab)
AWS Certified Security Specialty SCS-C03 Practice ExamsSCS-C03 (opens in a new tab)
AZ-900 Microsoft Azure Fundamentals Practice ExamsAZ-900100+ QuestionsRated 4.9/55,000+ Learners (opens in a new tab)
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AI-901 Azure AI Fundamentals Practice ExamsAI-901 (opens in a new tab)
AI-103 Azure AI App and Agent Developer Associate Practice ExamsAI-103 (opens in a new tab)
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AZ-802 Windows Server Hybrid Administrator Practice ExamsAZ-802 (opens in a new tab)
SC-200 Microsoft Security Operations Analyst Associate Practice ExamsSC-200 (opens in a new tab)
SC-300 Microsoft Identity and Access Administrator Practice ExamsSC-300 (opens in a new tab)
SC-500 Cloud and AI Security Engineer Associate Practice ExamsSC-500 (opens in a new tab)
SC-900 Microsoft Security, Compliance, and Identity Fundamentals Practice ExamsSC-900 (opens in a new tab)
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Kubernetes and Cloud Native Associate KCNA Practice ExamsKCNA100+ QuestionsRated 5.0/55,000+ Learners (opens in a new tab)
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Video courses and study guides
The most popular and the newest video courses and study guide eBooks.
Video courses
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Study guide eBooks
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Most popularStudy Guide eBook: AWS Certified Solutions Architect Professional SAP-C02SAP-C02Study guide eBook (opens in a new tab)
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