AWS Certified SysOps Administrator – Associate (legacy) — Question 917

An Amazon EBS volume attached to an EC2 instance was recently modified. Part of the modification included increasing the storage capacity. The SysOps
Administrator notices that the increased storage capacity is not reflected in the file system.
Which step should the Administrator complete to use the increased storage capacity?

Answer options

• A. Restart the EC2 instance.
• B. Extend the volume's file system.
• C. Detach the EBS volume, resize it, and attach it.
• D. Take an EBS snapshot and restore it to the bigger volume.

Correct answer: B

Explanation

After modifying an Amazon EBS volume to increase its size, the file system itself must be extended to recognize and utilize the newly allocated space. This can be done online using file-system-specific commands without needing to reboot the EC2 instance. Detaching the volume or restoring from a snapshot is unnecessary because EBS volumes support dynamic resizing while attached.