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CV0-004 Practice Question: Which TWO are advantages of using containers over…
Which TWO are advantages of using containers over virtual machines? (Select TWO.)
⚠ Common exam trap
CompTIA often tests the misconception that containers provide stronger isolation than VMs, when in fact VMs offer better security boundaries due to hardware-level virtualization.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Less overhead because they share the host OS kernel
Containers share the host operating system kernel, eliminating the need for a separate guest OS per instance. This reduces overhead significantly compared to virtual machines, which each require their own full OS, leading to more efficient use of system resources.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Better hardware isolation
Why it's wrong here
VMs provide stronger isolation via hypervisor.
- ✓
Less overhead because they share the host OS kernel
Why this is correct
Shared kernel reduces memory and CPU overhead.
- ✗
Requires a hypervisor to run
Why it's wrong here
Containers run on the host OS, not on a hypervisor.
- ✗
Larger resource consumption
Why it's wrong here
Containers are lightweight, using fewer resources.
- ✓
Faster startup time
Why this is correct
Containers start in seconds because they share the OS kernel.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CV0-004 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CV0-004 exam.