Which AWS service allows for file sharing between multiple Amazon EC2 instances?

Question

Options

• AAWS Direct Connect
• BAWS Snowball Edge
• CAWS Backup
• DAmazon Elastic File System (Amazon EFS)

• A
  1% (1)
• B
  1% (1)
• C
  4% (3)
• D
  93% (62)

Explanation

Amazon EFS (D) is a fully managed, scalable network file system (NFS) that can be mounted simultaneously by multiple EC2 instances across Availability Zones, making it the ideal shared file storage solution.

Why the distractors are wrong:

• A. AWS Direct Connect - a private network connection between on-premises data centers and AWS; it doesn't provide file sharing between EC2 instances.
• B. AWS Snowball Edge - a physical edge computing and data transfer device used to move large amounts of data into/out of AWS offline; unrelated to inter-instance file sharing.
• C. AWS Backup - a centralized backup service for automating and managing backups across AWS services; it protects data but doesn't enable shared file access.

Memory tip: Think EFS = "Everyone's File System" - the "E" in EFS stands for Elastic, meaning it scales automatically, and it's the one service where many EC2 instances can read and write the same files at the same time, just like a shared network drive.

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