AWS Certified Solutions Architect EC2 Instance Types and Cost 2

Question 1

A machine learning team needs GPU-accelerated instances for training deep learning models. Which EC2 instance family is purpose-built for this use case?

Accepted Answer

P-family instances

Answer

P-family instances (P3, P4) are equipped with NVIDIA GPUs specifically designed for ML training and HPC workloads.

Question 2

A startup wants to run fault-tolerant batch processing jobs at the lowest possible cost, and the jobs can be interrupted. Which EC2 purchasing option should they use?

Accepted Answer

Spot Instances

Answer

Spot Instances offer up to 90% savings over On-Demand pricing for interruptible workloads.

Question 3

Which EC2 instance type series is optimized for high-throughput network storage access and is commonly used for data warehousing?

Accepted Answer

D3 instances

Answer

D3 instances provide dense HDD storage with high disk throughput, ideal for distributed file systems and data warehousing.

Question 4

A company purchases a 1-year Convertible Reserved Instance for an m5.xlarge. Six months later, they need to switch to a c5.2xlarge. What can they do?

Accepted Answer

Exchange it for a Convertible RI of equal or greater value

Answer

Convertible Reserved Instances allow exchange for another Convertible RI of equal or greater value, enabling flexibility to change instance families.

Question 5

An architect is designing a high-performance computing cluster requiring low-latency, high-bandwidth inter-node communication. Which EC2 feature should they enable?

Accepted Answer

Enhanced Networking with EFA

Answer

Elastic Fabric Adapter (EFA) provides OS-bypass networking for HPC applications requiring ultra-low latency between instances.

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AWS Certified Solutions Architect EC2 Instance Types and Cost 2