D317 ITEC 2023 IT Applications
Final Assessment Review (Qns & Ans)
2025
1. Scenario – Advanced Serverless Architecture in IoT Data
Streaming
A company manages hundreds of IoT devices that transmit
sensor data continuously. To process this data in near real time
without the burden of server management, which AWS service
should be used?
- A. Amazon EC2
- B. AWS Lambda
- C. AWS Elastic Beanstalk
- D. Amazon ECS
©2025
, Correct ANS: B. AWS Lambda
Rationale: AWS Lambda is designed as an event-driven
compute service that automatically scales with incoming data
events. Its serverless nature makes it ideal for processing
fluctuating IoT data streams without requiring you to manage
server infrastructure.
2. Scenario – Inter-Subnet Communication in a VPC
An application hosted on multiple EC2 instances in different
private subnets is experiencing connectivity issues. Which
configuration is most effective for allowing secure and controlled
traffic flow between these instances?
- A. Implement stateless firewall configurations
- B. Use VPC Security Groups with appropriate rules
- C. Rely solely on Network ACLs
- D. Use Amazon CloudFront
Correct ANS: B. Use VPC Security Groups with appropriate
rules
Rationale: Security Groups in a VPC are stateful and allow
dynamic filtering for both inbound and outbound traffic, making
them the preferred method for controlling communication
between instances.
©2025
,3. Scenario – Implementing Infrastructure as Code (IaC)
Your organization wants to automate the provisioning of its
AWS resources to maintain consistency across environments.
Which AWS service is most suitable for defining and deploying
resources using templates?
- A. AWS CloudFormation
- B. AWS OpsWorks
- C. Amazon Inspector
- D. AWS Trusted Advisor
Correct ANS: A. AWS CloudFormation
Rationale: AWS CloudFormation enables you to define your
infrastructure using declarative JSON or YAML templates, which
ensures repeatable and consistent resource provisioning across
multiple environments.
4. Scenario – Achieving Global Data Consistency
An e-commerce platform requires a globally distributed
database to support low latency and high availability across
several regions. Which AWS feature best supports multi-region
replication with eventual consistency?
©2025
, - A. Amazon RDS Read Replicas
- B. DynamoDB Global Tables
- C. Amazon Redshift Concurrency Scaling
- D. Amazon Aurora Multi-Master
Correct ANS: B. DynamoDB Global Tables
Rationale: DynamoDB Global Tables provide multi-region
replication with eventual consistency, making them suitable for
applications that require fast, globally accessible data with high
availability.
5. Scenario – Optimizing Cloud Costs
For applications with predictable workloads, which pricing
model helps optimize costs while ensuring steady performance?
- A. On-Demand Instances
- B. Reserved Instances
- C. Spot Instances
- D. Dedicated Hosts
Correct ANS: B. Reserved Instances
©2025
Final Assessment Review (Qns & Ans)
2025
1. Scenario – Advanced Serverless Architecture in IoT Data
Streaming
A company manages hundreds of IoT devices that transmit
sensor data continuously. To process this data in near real time
without the burden of server management, which AWS service
should be used?
- A. Amazon EC2
- B. AWS Lambda
- C. AWS Elastic Beanstalk
- D. Amazon ECS
©2025
, Correct ANS: B. AWS Lambda
Rationale: AWS Lambda is designed as an event-driven
compute service that automatically scales with incoming data
events. Its serverless nature makes it ideal for processing
fluctuating IoT data streams without requiring you to manage
server infrastructure.
2. Scenario – Inter-Subnet Communication in a VPC
An application hosted on multiple EC2 instances in different
private subnets is experiencing connectivity issues. Which
configuration is most effective for allowing secure and controlled
traffic flow between these instances?
- A. Implement stateless firewall configurations
- B. Use VPC Security Groups with appropriate rules
- C. Rely solely on Network ACLs
- D. Use Amazon CloudFront
Correct ANS: B. Use VPC Security Groups with appropriate
rules
Rationale: Security Groups in a VPC are stateful and allow
dynamic filtering for both inbound and outbound traffic, making
them the preferred method for controlling communication
between instances.
©2025
,3. Scenario – Implementing Infrastructure as Code (IaC)
Your organization wants to automate the provisioning of its
AWS resources to maintain consistency across environments.
Which AWS service is most suitable for defining and deploying
resources using templates?
- A. AWS CloudFormation
- B. AWS OpsWorks
- C. Amazon Inspector
- D. AWS Trusted Advisor
Correct ANS: A. AWS CloudFormation
Rationale: AWS CloudFormation enables you to define your
infrastructure using declarative JSON or YAML templates, which
ensures repeatable and consistent resource provisioning across
multiple environments.
4. Scenario – Achieving Global Data Consistency
An e-commerce platform requires a globally distributed
database to support low latency and high availability across
several regions. Which AWS feature best supports multi-region
replication with eventual consistency?
©2025
, - A. Amazon RDS Read Replicas
- B. DynamoDB Global Tables
- C. Amazon Redshift Concurrency Scaling
- D. Amazon Aurora Multi-Master
Correct ANS: B. DynamoDB Global Tables
Rationale: DynamoDB Global Tables provide multi-region
replication with eventual consistency, making them suitable for
applications that require fast, globally accessible data with high
availability.
5. Scenario – Optimizing Cloud Costs
For applications with predictable workloads, which pricing
model helps optimize costs while ensuring steady performance?
- A. On-Demand Instances
- B. Reserved Instances
- C. Spot Instances
- D. Dedicated Hosts
Correct ANS: B. Reserved Instances
©2025
