A user runs the command "dd if=/dev/zero of=/dev/xvdfbs=1M" on a fresh blank EBS volume attached to a Linux instance. Which of the below mentioned activities is the user performing with the command given above?
A) Creating a file system on the EBS volume
B) Mounting the device to the instance
C) Pre warming the EBS volume
D) Formatting the EBS volume

Question

Quizplus · Accepted Answer

The command "dd if=/dev/zero of=/dev/xvdf bs=1M" writes zeros to the entire EBS volume, which is a process known as pre-warming. This is done to ensure that the volume performs optimally by eliminating the initial performance hit that can occur when accessing new blocks for the first time.

A User Runs the Command "Dd If=/dev/zero Of=/dev/xvdfbs=1M" on a Fresh