Week 3 Quiz :AWS Cloud Technical Essentials (AWS Fundamentals Specialization) Answers 2025

Question 1

What is a typical use case for Amazon Simple Storage Service (Amazon S3)?
✅ Object storage for media hosting
❌ Object storage for a boot drive
❌ Block storage for an EC2 instance
❌ File storage for multiple EC2 instances

Explanation:
Amazon S3 provides object storage — ideal for large files like videos, photos, or backups, up to 5 TB per object.

Question 2

A company needs a storage layer for a high-transaction relational database on EC2. Which should they use?
✅ Amazon Elastic Block Store (Amazon EBS)
❌ Amazon EC2 Instance Store
❌ Amazon S3
❌ Amazon EFS

Explanation:
EBS provides high-performance block storage optimized for transactional workloads like databases.

Question 3

True or False: Amazon EBS volumes are considered ephemeral storage.
✅ False
❌ True

Explanation:
EBS volumes are persistent — data remains even if the EC2 instance is stopped or terminated.

Question 4

Which S3 storage tier is best for long-term, rarely accessed data (7 years)?
✅ Amazon S3 Glacier Deep Archive
❌ Amazon S3 Standard
❌ Amazon S3 Standard-IA
❌ Amazon S3 Intelligent-Tiering

Explanation:
S3 Glacier Deep Archive offers lowest-cost storage for rarely accessed archival data.

Question 5

True or False: Object storage is the best solution for updating small sections of a file.
✅ False
❌ True

Explanation:
Object storage updates the entire file, not partial data — use block storage for frequent partial updates.

Question 6

True or False: Multi-AZ deployment increases database availability.
✅ True
❌ False

Explanation:
Multi-AZ ensures high availability — standby replicas automatically promote on primary failure.

Question 7

Which task are users responsible for in Amazon RDS?
✅ Optimizing the database
❌ Provisioning infrastructure
❌ Installing DBMS
❌ Patching OS

Explanation:
Amazon RDS automates infrastructure and patching — users handle database tuning and optimization.

Question 8

Which are common use cases for file storage? (Choose TWO)
✅ User home directories
✅ Large content repositories
❌ Backups in S3
❌ Relational databases
❌ Big data analytics

Explanation:
File storage (EFS) uses a hierarchical system suited for shared content, media repositories, and user folders.

Question 9

True or False: EBS volumes can attach to S3 buckets.
✅ False
❌ True

Explanation:
EBS can attach only to EC2 instances, not S3 — S3 is a separate object storage service.

Question 10

Which instance families does Amazon RDS support? (Choose TWO)
✅ General purpose
✅ Memory optimized
❌ Storage optimized
❌ Compute optimized
❌ Accelerated computing

Explanation:
RDS supports general-purpose (balanced workloads) and memory-optimized (in-memory databases) instances.

Question 11

Which service is best for temporary, non-persistent storage?
✅ Amazon EC2 Instance Store
❌ Amazon EBS
❌ Amazon S3
❌ Amazon EFS

Explanation:
Instance Store is ephemeral storage — data is lost when the instance stops or terminates.

Question 12

Which database stores data as key-value pairs?
✅ Amazon DynamoDB
❌ Amazon DocumentDB
❌ Amazon Neptune
❌ Amazon RDS

Explanation:
DynamoDB is a serverless NoSQL key-value and document database ideal for quick lookups.

Question 13

Which core component of DynamoDB corresponds to a column in a relational database?
✅ Attribute
❌ Table
❌ Item
❌ Database

Explanation:
In DynamoDB, an attribute is similar to a column in a relational table.

Question 14

Which AWS database service is best for social networks or recommendation engines?
✅ Amazon Neptune
❌ Amazon DynamoDB
❌ Amazon Aurora
❌ Amazon Redshift

Explanation:
Amazon Neptune is a graph database optimized for connected data like relationships and recommendations.

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