MCQs on Scaling and High Availability | AWS EC2 MCQs Questions
Amazon EC2 is a powerful tool for cloud computing, enabling scalable and secure virtual servers. This guide presents 30 AWS EC2 MCQ questions and answers focused on Auto Scaling, load balancing, CloudWatch monitoring, high availability setups, and disaster recovery strategies. Ideal for developers and architects mastering AWS scalability and reliability features.
1. Auto Scaling: Concepts and Configuration
- What is Auto Scaling in AWS?
a) A feature to automatically scale resources based on demand
b) A manual process to resize EC2 instances
c) A tool for managing user permissions
d) A database replication feature - What is a scaling policy in AWS Auto Scaling?
a) A script to terminate EC2 instances
b) Rules to define when to add or remove instances
c) A monitoring feature in AWS CloudWatch
d) A backup strategy - Which AWS service works closely with Auto Scaling for scaling decisions?
a) S3
b) CloudWatch
c) Lambda
d) Route 53 - What is a Launch Configuration in Auto Scaling?
a) A template for creating new EC2 instances
b) A script for managing IAM roles
c) A monitoring tool
d) A load balancer setting - Which metric is commonly used for scaling decisions?
a) EC2 instance name
b) CPU utilization percentage
c) S3 bucket size
d) Lambda function execution time - What is the purpose of an Auto Scaling group?
a) To group instances for manual management
b) To define a collection of EC2 instances with scaling policies
c) To store data for scaling configurations
d) To monitor network traffic
2. Load Balancing and Scaling Architectures
- What is the role of a load balancer in AWS?
a) To store EC2 instances
b) To distribute incoming traffic across multiple targets
c) To create backups of data
d) To configure DNS records - Which AWS service provides load balancing capabilities?
a) AWS Config
b) Elastic Load Balancing (ELB)
c) AWS Glue
d) CloudFormation - What are the types of Elastic Load Balancers in AWS?
a) Application, Network, and Gateway Load Balancers
b) Public and Private Load Balancers
c) Static and Dynamic Load Balancers
d) Regional and Global Load Balancers - Which load balancer is best suited for Layer 7 traffic?
a) Network Load Balancer
b) Application Load Balancer
c) Classic Load Balancer
d) Gateway Load Balancer - What is the primary purpose of scaling architectures in AWS?
a) To reduce storage costs
b) To handle varying workloads efficiently
c) To create static content for websites
d) To design virtual private networks - How does Elastic Load Balancing enhance scalability?
a) By duplicating EC2 instances
b) By distributing traffic across multiple resources
c) By automating backup processes
d) By encrypting data in transit
3. Monitoring with CloudWatch
- What is AWS CloudWatch used for?
a) Managing DNS records
b) Monitoring and logging AWS resources
c) Encrypting EC2 instance volumes
d) Storing data in relational databases - Which metric can CloudWatch monitor for EC2 instances?
a) CPU utilization
b) API request limits
c) IAM user activity
d) Route 53 latency - What is a CloudWatch alarm?
a) A feature to send notifications when metrics breach thresholds
b) A tool to create EC2 instances
c) A backup scheduling tool
d) A cost estimator - What is a CloudWatch dashboard?
a) A page for configuring EC2 Auto Scaling
b) A customizable interface to visualize metrics and logs
c) A tool for managing IAM roles
d) A load balancer configuration screen - How can CloudWatch logs be used in EC2 monitoring?
a) To trigger EC2 instance launches
b) To store and analyze application logs from instances
c) To replicate data between regions
d) To automate IAM role creation - Which service integrates with CloudWatch for automated scaling?
a) AWS IAM
b) AWS Auto Scaling
c) AWS Glue
d) Amazon S3
4. Setting Up EC2 for High Availability
- What does high availability mean in AWS?
a) Ensuring minimal downtime and service interruptions
b) Creating backups for EC2 instances
c) Running instances in a single region
d) Using on-demand instances exclusively - What is the benefit of using multiple Availability Zones for EC2?
a) Reduces storage costs
b) Increases fault tolerance and availability
c) Improves network speed
d) Enhances data encryption - Which AWS feature supports EC2 high availability?
a) Elastic IPs
b) Placement Groups
c) Auto Scaling and Elastic Load Balancing
d) AWS CloudTrail - How can Elastic IPs help with high availability?
a) By automatically scaling EC2 instances
b) By providing a static IP address to an instance
c) By enabling DNS failover
d) By storing backup configurations - What is the recommended instance placement strategy for high availability?
a) Deploy instances in a single zone
b) Distribute instances across multiple zones and regions
c) Use on-demand instances only
d) Deploy in the default VPC - Which storage option ensures high availability for EC2?
a) Instance Store
b) Amazon EBS with snapshots
c) Local storage
d) AWS S3 only
5. Disaster Recovery Strategies
- What is the purpose of disaster recovery in AWS?
a) To manage costs
b) To minimize downtime and data loss during outages
c) To improve network speed
d) To secure IAM credentials - What is a common disaster recovery strategy in AWS?
a) Using EC2 Spot Instances
b) Enabling Multi-AZ deployments
c) Configuring Elastic Load Balancers
d) Encrypting all network traffic - What is the recovery point objective (RPO)?
a) Maximum acceptable downtime during recovery
b) The time it takes to detect an outage
c) The maximum allowable data loss during an outage
d) The cost of implementing a backup plan - Which AWS service is commonly used for backups in disaster recovery?
a) Amazon S3
b) Amazon RDS
c) AWS Lambda
d) AWS Config - What does failover mean in disaster recovery?
a) Automatically redirecting traffic to a backup system during failure
b) Monitoring EC2 instances for errors
c) Manually restarting services after an outage
d) Scaling EC2 instances manually - Which tool can help automate disaster recovery in AWS?
a) AWS Elastic Beanstalk
b) AWS CloudFormation
c) AWS CodePipeline
d) AWS CodeBuild
Answers
| QNo | Answer (Option with the text) |
|---|---|
| 1 | a) A feature to automatically scale resources based on demand |
| 2 | b) Rules to define when to add or remove instances |
| 3 | b) CloudWatch |
| 4 | a) A template for creating new EC2 instances |
| 5 | b) CPU utilization percentage |
| 6 | b) To define a collection of EC2 instances with scaling policies |
| 7 | b) To distribute incoming traffic across multiple targets |
| 8 | b) Elastic Load Balancing (ELB) |
| 9 | a) Application, Network, and Gateway Load Balancers |
| 10 | b) Application Load Balancer |
| 11 | b) To handle varying workloads efficiently |
| 12 | b) By distributing traffic across multiple resources |
| 13 | b) Monitoring and logging AWS resources |
| 14 | a) CPU utilization |
| 15 | a) A feature to send notifications when metrics breach thresholds |
| 16 | b) A customizable interface to visualize metrics and logs |
| 17 | b) To store and analyze application logs from instances |
| 18 | b) AWS Auto Scaling |
| 19 | a) Ensuring minimal downtime and service interruptions |
| 20 | b) Increases fault tolerance and availability |
| 21 | c) Auto Scaling and Elastic Load Balancing |
| 22 | b) By providing a static IP address to an instance |
| 23 | b) Distribute instances across multiple zones and regions |
| 24 | b) Amazon EBS with snapshots |
| 25 | b) To minimize downtime and data loss during outages |
| 26 | b) Enabling Multi-AZ deployments |
| 27 | c) The maximum allowable data loss during an outage |
| 28 | a) Amazon S3 |
| 29 | a) Automatically redirecting traffic to a backup system during failure |
| 30 | b) AWS CloudFormation |