MCQs on Advanced EC2 Features and Optimization | AWS EC2 MCQs Questions
Amazon EC2 is an essential component of AWS cloud infrastructure, providing scalable and cost-effective computing power. This article includes 30 AWS EC2 MCQ questions and answers covering Spot Instances, Reserved Instances, Placement Groups, Instance Metadata, and strategies for optimizing performance and cost. Perfect for learners aiming to master AWS EC2.
1. Spot Instances and Savings Plans
- What is the primary advantage of using Spot Instances?
a) Predictable pricing
b) Cost savings of up to 90%
c) Guaranteed uptime
d) Dedicated infrastructure - Which use case is most suitable for Spot Instances?
a) Production databases
b) Fault-tolerant batch processing workloads
c) High availability applications
d) Static websites - What happens when the Spot Price exceeds your bid price?
a) The instance shuts down automatically
b) The instance is terminated with a 2-minute warning
c) The instance continues running with additional charges
d) You are prompted to adjust the bid - How are Spot Instance prices determined?
a) AWS sets fixed hourly rates
b) Based on demand and supply
c) By the instance type only
d) By user bids - Which AWS feature allows consistent savings over long-term usage without upfront payment?
a) Spot Instances
b) Reserved Instances
c) Savings Plans
d) Elastic Load Balancing
2. Reserved Instances and Pricing Models
- What are the payment options for Reserved Instances?
a) Hourly billing only
b) No Upfront, Partial Upfront, and All Upfront
c) Spot Pricing and On-Demand Pricing
d) Monthly subscriptions - How long is the term for a Reserved Instance typically?
a) 1 month
b) 6 months
c) 1 or 3 years
d) 5 years - Which of the following provides the most savings?
a) On-Demand Instances
b) Reserved Instances with All Upfront payment
c) Spot Instances
d) Savings Plans - Which Reserved Instance feature allows flexibility to change instance families?
a) Convertible Reserved Instances
b) Standard Reserved Instances
c) Dedicated Hosts
d) Elastic Compute - Can Reserved Instances be shared across accounts in an AWS Organization?
a) Yes, if sharing is enabled
b) No, they are account-specific
c) Only for Standard RIs
d) Only for Convertible RIs
3. EC2 Placement Groups
- What is the purpose of EC2 Placement Groups?
a) To manage instance metadata
b) To optimize network latency and throughput
c) To control instance pricing
d) To enhance instance security - What are the types of Placement Groups in EC2?
a) Cluster, Spread, and Partition
b) Group, Array, and Block
c) Static, Dynamic, and Mixed
d) Primary, Secondary, and Tertiary - Which Placement Group is best suited for high-performance computing applications?
a) Spread Placement Group
b) Cluster Placement Group
c) Partition Placement Group
d) Default Placement Group - What is the key limitation of a Cluster Placement Group?
a) Limited to specific instance types
b) Cannot span multiple Availability Zones
c) Requires dedicated instances
d) High cost compared to other Placement Groups - Can Placement Groups be merged or split?
a) Yes, with specific CLI commands
b) No, they are immutable once created
c) Only for Cluster Placement Groups
d) Only for Partition Placement Groups
4. Instance Metadata and User Data
- What is EC2 Instance Metadata used for?
a) Configuring EC2 security groups
b) Retrieving instance-specific information
c) Running scripts on instances
d) Managing Placement Groups - How can you access EC2 Instance Metadata?
a) Through the AWS Management Console
b) Using thehttp://169.254.169.254endpoint
c) By enabling it in the security group settings
d) Through the EC2 dashboard - What can EC2 User Data be used for?
a) Fetching instance pricing details
b) Running initialization scripts at launch
c) Updating metadata dynamically
d) Configuring IAM roles - Can User Data scripts be modified after instance launch?
a) Yes, via the AWS CLI
b) No, they are read-only post-launch
c) Only for Spot Instances
d) Only for Reserved Instances - What type of information is typically found in Instance Metadata?
a) Billing data
b) Instance ID, AMI ID, and security group details
c) Reserved Instance details
d) S3 bucket configurations
5. Optimizing Performance and Cost
- Which tool helps identify underutilized EC2 instances?
a) AWS Trusted Advisor
b) AWS CloudTrail
c) EC2 Auto Scaling
d) AWS Shield - What is the benefit of EC2 Auto Scaling?
a) Simplifies Reserved Instance management
b) Automatically adjusts capacity to meet demand
c) Provides cost analysis for instances
d) Enhances IAM role permissions - How can you monitor the performance of EC2 instances?
a) By using AWS CloudFormation
b) By enabling detailed monitoring in CloudWatch
c) Through EC2 dashboard logs
d) By analyzing API requests - What is the role of Elastic Block Store (EBS) optimization?
a) Reduces network latency
b) Improves storage performance for EC2 instances
c) Enhances IAM configurations
d) Automates EC2 instance scaling - Which Reserved Instance type provides the most flexibility?
a) Convertible Reserved Instances
b) Spot Instances
c) On-Demand Instances
d) Cluster Placement Groups - What is the primary advantage of using AWS Savings Plans over Reserved Instances?
a) Better performance monitoring
b) More flexibility in instance type and family selection
c) Higher storage capacity
d) Dedicated support - How do you minimize EC2 costs for non-critical workloads?
a) Use Spot Instances
b) Switch to Dedicated Hosts
c) Enable Auto Scaling
d) Purchase All Upfront Reserved Instances - What is the benefit of using Amazon EC2 Hibernate?
a) Reduces costs for always-on instances
b) Restores applications quickly to their pre-stopped state
c) Improves instance security
d) Simplifies instance termination - Which tool can be used to simulate EC2 workload performance?
a) AWS Load Balancer
b) EC2 Capacity Planner
c) AWS Performance Insights
d) EC2 Fleet - Can Reserved Instances be resold in the AWS Marketplace?
a) Yes, for Standard Reserved Instances
b) No, they are non-transferable
c) Only for Spot Instances
d) Only in the Enterprise Plan
Answer Table
| Qno | Answer (Option with the text) |
|---|---|
| 1 | b) Cost savings of up to 90% |
| 2 | b) Fault-tolerant batch processing workloads |
| 3 | b) The instance is terminated with a 2-minute warning |
| 4 | b) Based on demand and supply |
| 5 | c) Savings Plans |
| 6 | b) No Upfront, Partial Upfront, and All Upfront |
| 7 | c) 1 or 3 years |
| 8 | b) Reserved Instances with All Upfront payment |
| 9 | a) Convertible Reserved Instances |
| 10 | a) Yes, if sharing is enabled |
| 11 | b) To optimize network latency and throughput |
| 12 | a) Cluster, Spread, and Partition |
| 13 | b) Cluster Placement Group |
| 14 | b) Cannot span multiple Availability Zones |
| 15 | b) No, they are immutable once created |
| 16 | b) Retrieving instance-specific information |
| 17 | b) Using the http://169.254.169.254 endpoint |
| 18 | b) Running initialization scripts at launch |
| 19 | b) No, they are read-only post-launch |
| 20 | b) Instance ID, AMI ID, and security group details |
| 21 | a) AWS Trusted Advisor |
| 22 | b) Automatically adjusts capacity to meet demand |
| 23 | b) By enabling detailed monitoring in CloudWatch |
| 24 | b) Improves storage performance for EC2 instances |
| 25 | a) Convertible Reserved Instances |
| 26 | b) More flexibility in instance type and family selection |
| 27 | a) Use Spot Instances |
| 28 | b) Restores applications quickly to their pre-stopped state |
| 29 | d) EC2 Fleet |
| 30 | a) Yes, for Standard Reserved Instances |