D316 ITEC 2013 IT Foundations
Final Assessment Review (Qns & Ans)
2025
1. Scenario – Virtualization in the Cloud
An organization currently runs its applications on hypervisor-
based virtual machines in its data center and now plans to migrate
to AWS in order to leverage the benefits of cloud-based
virtualization. Which AWS service best replicates the traditional
virtual machine model?
- A. Amazon Lightsail
- B. Amazon EC2
- C. AWS Lambda
- D. AWS Fargate
©2025
, Correct ANS: B. Amazon EC2
Rationale: Amazon EC2 provides resizable compute capacity
in the cloud and mimics the traditional virtualization model by
offering virtual servers (instances). This service gives control over
the operating system, networking, and security similar to on-
premises VMs but with the benefits of scalability and on-demand
provisioning.
2. Scenario – Distributed System Design
A global enterprise needs to design its IT infrastructure so that
its microservices communicate with minimal latency across
multiple regions. Which approach best supports a distributed
architecture for inter-service communication?
- A. A centralized monolithic application deployed in one
region
- B. Utilizing distributed messaging systems (e.g., Amazon
SQS and SNS) integrated with region-specific microservices
- C. Direct synchronous calls between microservices in a single
data center
- D. Relying solely on replicated relational databases without
decoupling
Correct ANS: B. Utilizing distributed messaging systems
(e.g., Amazon SQS and SNS) integrated with region-specific
microservices
©2025
, Rationale: Distributed messaging systems enable decoupling
of microservices, allowing asynchronous communication; this
architecture minimizes latency and supports scalability and
resilience across regions.
3. Scenario – High Availability & Resilience
When architecting an application on AWS, which principle is
most effective for enhancing system resilience against localized
failures?
- A. Vertical scaling of a single instance
- B. Horizontal scaling through redundancy across multiple
Availability Zones (AZs)
- C. Deploying a single instance with extensive backup storage
- D. Utilizing periodic manual failovers
Correct ANS: B. Horizontal scaling through redundancy
across multiple Availability Zones (AZs)
Rationale: Distributing workloads across multiple AZs
ensures that if one zone fails, the application remains available in
another, thereby enhancing overall system resilience through
built-in redundancy.
4. Scenario – Secure Hybrid Connectivity
©2025
Final Assessment Review (Qns & Ans)
2025
1. Scenario – Virtualization in the Cloud
An organization currently runs its applications on hypervisor-
based virtual machines in its data center and now plans to migrate
to AWS in order to leverage the benefits of cloud-based
virtualization. Which AWS service best replicates the traditional
virtual machine model?
- A. Amazon Lightsail
- B. Amazon EC2
- C. AWS Lambda
- D. AWS Fargate
©2025
, Correct ANS: B. Amazon EC2
Rationale: Amazon EC2 provides resizable compute capacity
in the cloud and mimics the traditional virtualization model by
offering virtual servers (instances). This service gives control over
the operating system, networking, and security similar to on-
premises VMs but with the benefits of scalability and on-demand
provisioning.
2. Scenario – Distributed System Design
A global enterprise needs to design its IT infrastructure so that
its microservices communicate with minimal latency across
multiple regions. Which approach best supports a distributed
architecture for inter-service communication?
- A. A centralized monolithic application deployed in one
region
- B. Utilizing distributed messaging systems (e.g., Amazon
SQS and SNS) integrated with region-specific microservices
- C. Direct synchronous calls between microservices in a single
data center
- D. Relying solely on replicated relational databases without
decoupling
Correct ANS: B. Utilizing distributed messaging systems
(e.g., Amazon SQS and SNS) integrated with region-specific
microservices
©2025
, Rationale: Distributed messaging systems enable decoupling
of microservices, allowing asynchronous communication; this
architecture minimizes latency and supports scalability and
resilience across regions.
3. Scenario – High Availability & Resilience
When architecting an application on AWS, which principle is
most effective for enhancing system resilience against localized
failures?
- A. Vertical scaling of a single instance
- B. Horizontal scaling through redundancy across multiple
Availability Zones (AZs)
- C. Deploying a single instance with extensive backup storage
- D. Utilizing periodic manual failovers
Correct ANS: B. Horizontal scaling through redundancy
across multiple Availability Zones (AZs)
Rationale: Distributing workloads across multiple AZs
ensures that if one zone fails, the application remains available in
another, thereby enhancing overall system resilience through
built-in redundancy.
4. Scenario – Secure Hybrid Connectivity
©2025
