MCQs

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1. What is the main benefit of auto-scaling in cloud computing?
   a. Increased latency
   b. Manual resource management
   c. Automatic adjustment of resources to demand
   d. Fixed resource allocation
   Answer: c. Automatic adjustment of resources to demandfreshersnow+1
2. Which AWS service is designed specifically for automatic scaling of EC2 instances?
   a. AWS Lambda
   b. Amazon EC2 Auto Scaling
   c. AWS Elastic Beanstalk
   d. Amazon Route 53
   Answer: b. Amazon EC2 Auto Scalingvinsys+1
3. Which metric can trigger auto-scaling in cloud environments?
   a. Storage threshold
   b. CPU utilization
   c. Number of network interfaces
   d. OS version
   Answer: b. CPU utilizationwebasha+1
4. Which scaling strategy adds resources to a single server to increase capacity?
   a. Diagonal scaling
   b. Horizontal scaling
   c. Vertical scaling
   d. Distributed scaling
   Answer: c. Vertical scalingwayground+1
5. What is the advantage of horizontal scaling over vertical scaling?
   a. Immediate performance
   b. Increased single-node capacity
   c. Distributed fault tolerance
   d. Lower resource usage
   Answer: c. Distributed fault tolerancewebasha+1
6. What does an auto-scaling group manage?
   a. Databases exclusively
   b. Set of servers or instances
   c. Load balancer configurations
   d. Network routing rules
   Answer: b. Set of servers or instancesinterviewprep+1
7. What is a common auto-scaling policy type?
   a. Static resource allocation
   b. Scheduled scaling
   c. Manual server provisioning
   d. Redundant networking
   Answer: b. Scheduled scalingaws.amazon+1
8. What is cooldown period in AWS Auto Scaling?
   a. Time when scaling is prohibited
   b. Time for instances to stabilize after scaling
   c. Time for manual intervention
   d. Time for updating OS
   Answer: b. Time for instances to stabilize after scalingyoutubeaws.amazon
9. Which cloud component works together with auto-scaling for smooth distribution of workload?
   a. Database indexer
   b. Load balancer
   c. CDN provider
   d. Backup system
   Answer: b. Load balancerscribd+1
10. When does auto-scaling scale in the resources?
    a. When performance metrics exceed thresholds
    b. When demand decreases below predefined thresholds
    c. When application restarts
    d. When backups are created
    Answer: b. When demand decreases below predefined thresholdswhizlabs+1
11. What is predictive scaling in AWS Auto Scaling?
    a. Scaling resources based on user suggestion
    b. Scaling resources using historical traffic patterns
    c. Scaling only during business hours
    d. Scaling resources during maintenance windows
    Answer: b. Scaling resources using historical traffic patternsaws.amazon
12. Which parameter sets the number of desired instances in an auto-scaling group?
    a. Maximum capacity
    b. Minimum size
    c. Desired capacity
    d. Target latency
    Answer: c. Desired capacityyoutubeaws.amazon
13. What is a characteristic of cloud scaling compared to traditional scaling?
    a. Static resources
    b. Manual scaling
    c. On-demand virtualized resources
    d. Over-provisioned hardware
    Answer: c. On-demand virtualized resourcestutorialspoint+1
14. Why does AWS Auto Scaling replace unhealthy instances?
    a. To apply updates
    b. To improve access speed
    c. To maintain service availability
    d. To decrease costs
    Answer: c. To maintain service availabilityyoutubeaws.amazon
15. Which factor is NOT a trigger for auto-scaling?
    a. CPU utilization
    b. Scheduled time
    c. Application code error
    d. Memory usage
    Answer: c. Application code errorwebasha+1
16. What is a disadvantage of vertical scaling?
    a. No downtime during upgrade
    b. Physical hardware limits
    c. High availability
    d. Easy capacity expansion
    Answer: b. Physical hardware limitswayground+1
17. Which cloud service model most commonly uses auto-scaling?
    a. SaaS (Software as a Service)
    b. IaaS (Infrastructure as a Service)
    c. Paas (Platform as a Service)
    d. DBaaS (Database as a Service)
    Answer: b. IaaS (Infrastructure as a Service)examradar+1
18. What role does Amazon CloudWatch play in auto-scaling?
    a. Encrypting data
    b. Monitoring metrics for scaling decisions
    c. Reducing bandwidth
    d. Computing storage utilization
    Answer: b. Monitoring metrics for scaling decisionsaws.amazonyoutube
19. What term refers to scaling resources by adding more nodes?
    a. Vertical scaling
    b. Horizontal scaling
    c. Diagonal scaling
    d. Replicated scaling
    Answer: b. Horizontal scalingwayground+1
20. Which scenario best suits vertical scaling?
    a. Stateless web applications
    b. Legacy or monolithic applications
    c. Distributed microservices
    d. NoSQL databases
    Answer: b. Legacy or monolithic applicationswebasha+1
21. Which AWS component allows auto-scaling policy creation?
    a. EC2 Dashboard
    b. S3 Configuration Manager
    c. Lambda Function Editor
    d. Route 53 Panel
    Answer: a. EC2 Dashboardyoutubeaws.amazon
22. Auto-scaling can be triggered based on which of the following?
    a. Backup completion
    b. CPU and memory usage metrics
    c. Static configuration file changes
    d. Manual requests only
    Answer: b. CPU and memory usage metricsinterviewprep+1
23. What is a benefit of using auto-scaling for cost optimization?
    a. Constant maximum resources
    b. Paying only for used resources
    c. Manual scaling by engineers
    d. Higher fixed monthly payments
    Answer: b. Paying only for used resourcesfreshersnow+1
24. What is the role of a launch configuration in an auto-scaling group?
    a. Defining network security rules
    b. Specifying how new instances are configured
    c. Managing load balancer health checks
    d. Scheduling scaling events
    Answer: b. Specifying how new instances are configuredscribd+1
25. When using auto-scaling, what happens if an EC2 instance fails a health check?
    a. Instance is ignored
    b. Instance is replaced automatically
    c. Scaling event is blocked
    d. Network connection is reset
    Answer: b. Instance is replaced automaticallyaws.amazonyoutube
26. Which is NOT a benefit of auto-scaling?
    a. Minimizes cost during low demand
    b. Enhances service availability
    c. Requires manual intervention
    d. Optimizes performance during high demand
    Answer: c. Requires manual interventionwayground+1
27. What determines the maximum number of instances in an auto-scaling group?
    a. Minimum size parameter
    b. Maximum capacity parameter
    c. Desired capacity parameter
    d. Launch configuration
    Answer: b. Maximum capacity parameterwebasha+1
28. Which of the following is NOT required to set up auto-scaling in AWS?
    a. Launch template/configuration
    b. Scaling policies
    c. Security group rules
    d. Database schema
    Answer: d. Database schemayoutubeaws.amazon
29. What is scheduled scaling?
    a. Scaling based on peak times like weekends or nights
    b. Scaling only when CPU exceeds 90%
    c. Scaling with manual approval
    d. Scaling during maintenance windows only
    Answer: a. Scaling based on peak times like weekends or nightsaws.amazon+1
30. Auto-scaling helps achieve which cloud computing goal?
    a. Vendor lock-in
    b. Dynamic resource provisioning
    c. Static infrastructure allocation
    d. Manual tracking of usage
    Answer: b. Dynamic resource provisioninginterviewkickstart+1
31. How is auto-scaling in Google Cloud different from AWS?
    a. Only manual scaling supported in Google Cloud
    b. Google uses managed instance groups
    c. AWS supports only scheduled scaling
    d. Google disables scaling for VMs
    Answer: b. Google uses managed instance groupspartner.cloudskillsboost
32. Which step must be performed to enable auto-scaling in cloud infrastructure?
    a. Create scaling policies and metrics monitoring
    b. Migrate database manually
    c. Configure static IPs for each node
    d. Disable load balancing
    Answer: a. Create scaling policies and metrics monitoringyoutubeaws.amazon
33. What is the main purpose of a load balancer in auto-scaled environments?
    a. Scheduling backups
    b. Distributing traffic among instances
    c. Encrypting transmissions
    d. Monitoring capacity
    Answer: b. Distributing traffic among instancestutorialspoint+1
34. How does auto-scaling contribute to fault tolerance?
    a. By maintaining manual logs
    b. Spinning up replacement instances for failed nodes
    c. Disabling scaling during outages
    d. Lowering the cost of hardware
    Answer: b. Spinning up replacement instances for failed nodesscribd+1
35. What is the primary difference between manual and automatic scaling?
    a. Manual requires administrative intervention, automatic is predefined
    b. Manual always uses less resources
    c. Automatic only works in legacy systems
    d. Both require human involvement
    Answer: a. Manual requires administrative intervention, automatic is predefinedwayground+1
36. Which cloud platform supports auto-scaling?
    a. Only AWS
    b. AWS, Google Cloud, and Azure
    c. Only Google Cloud
    d. Only Azure
    Answer: b. AWS, Google Cloud, and Azurepartner.cloudskillsboost+1
37. What type of workload benefits most from auto-scaling?
    a. Constant steady usage
    b. Variable fluctuating demand
    c. Minimal demand
    d. Legacy batch jobs
    Answer: b. Variable fluctuating demandexamradar+1
38. What is a minimum size parameter in auto-scaling group configuration?
    a. Maximum allowed instances
    b. Least number of instances at any time
    c. Number of CPU cores per instance
    d. Launch configuration name
    Answer: b. Least number of instances at any timeaws.amazonyoutube
39. Why should scaling policies be regularly reviewed?
    a. To reduce monitoring costs
    b. To reflect changing patterns of resource demand
    c. To increase static resource allocation
    d. To avoid using metrics
    Answer: b. To reflect changing patterns of resource demandinterviewprep+1
40. What is dynamic scaling?
    a. Scaling resources based on real-time metrics
    b. Scaling based only on time schedules
    c. Manual scaling during maintenance
    d. Disabling automatic scaling
    Answer: a. Scaling resources based on real-time metricsinterviewprep+1
41. Which resource is NOT typically scaled in auto-scaling?
    a. Server instances
    b. Bandwidth
    c. Database schemas
    d. Memory
    Answer: c. Database schemasinterviewprep+1
42. Which cloud monitoring service typically triggers auto-scaling actions?
    a. Google Stackdriver
    b. Amazon CloudWatch
    c. Microsoft Azure Monitor
    d. All of the above
    Answer: d. All of the aboveyoutubeaws.amazon
43. How does auto-scaling optimize performance?
    a. By statically increasing resources
    b. By adjusting compute resources instantly as demand changes
    c. By disabling backup routines
    d. By increasing database size always
    Answer: b. By adjusting compute resources instantly as demand changesfreshersnow+1
44. What is scale-out in cloud scaling?
    a. Adding larger CPUs to servers
    b. Adding more server instances for increased load
    c. Removing VMs from deployment
    d. Reducing memory allocation
    Answer: b. Adding more server instances for increased loadwebasha+1
45. What is scale-in in cloud scaling?
    a. Decreasing capacity of single node
    b. Removing nodes when load decreases
    c. Upgrading RAM in each server
    d. Increasing storage for database
    Answer: b. Removing nodes when load decreaseswebasha+1
46. How is provisioning handled in auto-scaling?
    a. Manual configuration each time
    b. Automated by scaling policies and metrics
    c. Through vendor support tickets
    d. By scripting only
    Answer: b. Automated by scaling policies and metricsinterviewprep+1
47. What’s a common mistake preventing auto-scaling effectiveness?
    a. Insufficient monitoring and improper scaling policies
    b. Over-provisioned network speed
    c. Too many VMs on a single node
    d. Ignoring security group settings
    Answer: a. Insufficient monitoring and improper scaling policiesplacementpreparation+1
48. In AWS auto-scaling, what component helps define how new instances are launched?
    a. Launch configuration or launch template
    b. IAM user roles
    c. Security groups
    d. Availability zones
    Answer: a. Launch configuration or launch templatescribd+1
49. What is the default billing model for auto-scaling cloud resources?
    a. Free for all auto-scaled resources
    b. Pay only for provisioned resources
    c. Monthly flat fee regardless of usage
    d. Free for usage over a certain threshold
    Answer: b. Pay only for provisioned resourcesscribd+1
50. What is a use case for auto-scaling in modern cloud applications?
    a. Scaling resources for seasonal traffic spikes
    b. Running legacy applications with fixed demand
    c. Periodic database schema updates
    d. Reducing resource usage for always-on services
    Answer: a. Scaling resources for seasonal traffic spikeswebashayoutube

1. https://www.freshersnow.com/cloud-computing-mcqs-and-answers-with-explanation/
2. https://www.webasha.com/blog/top-50-cloud-scalability-interview-questions-and-answers
3. https://www.vinsys.com/blog/aws-cloud-practitioner-certification-exam-mcqs
4. https://interviewkickstart.com/blogs/interview-questions/cloud-computing-mcqs-it-professionals
5. https://aws.amazon.com/ec2/autoscaling/faqs/
6. https://wayground.com/admin/quiz/68231414e927c0751e63fe60/autoscaling
7. https://interviewprep.org/auto-scaling-interview-questions/
8. https://www.youtube.com/watch?v=DtYOJbiXXQg
9. https://www.scribd.com/document/688242036/ELB-Autoscaling-quiz
10. https://www.tutorialspoint.com/cloud_computing/quiz_on_autoscaling_vs_load_balancer.htm
11. https://www.whizlabs.com/blog/top-aws-interview-questions/
12. https://examradar.com/fundamentals-of-cloud-computing-and-cloud-services-mcqs/
13. https://partner.cloudskillsboost.google/paths/69/course_templates/178/quizzes/567851?locale=en
14. http://www.placementpreparation.io/mcq/cloud-computing/page/4/
15. https://www.sanfoundry.com/cloud-computing-mcqs/
16. https://gtu-mcq.com/BE/Computer-Engineering/Semester-8/2180712/5194/MCQs?q=9aZHDjblmRk%3D
17. https://www.sanfoundry.com/cloud-computing-aws-interview-questions-answers/
18. https://dev.to/imsushant12/interview-questions-on-aws-networking-vpc-load-balancers-and-auto-scaling-mkh
19. https://www.scribd.com/document/798168434/Cloud-Computing-Multiple-Choice-Questions-accenture
20. https://letsfindcourse.com/cloud-computing/aws-mcq-questions-and-answers