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XK0-006 Practice Question: Which TWO of the following are characteristics of…
Which TWO of the following are characteristics of containers compared to virtual machines? (Choose two.)
⚠ Common exam trap
Watch out — candidates often confuse container isolation with hypervisor-based isolation, mistakenly thinking containers run their own kernel or OS, when in fact they share the host kernel and use namespaces/cgroups.
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
✓
Containers require less overhead than VMs.
Containers share the host OS kernel and do not require a full guest OS per instance, resulting in significantly lower resource overhead (CPU, memory, and storage) compared to virtual machines. Option E is correct because containers are lightweight processes that can start in seconds, whereas VMs require booting an entire operating system, which typically takes minutes.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Containers run their own kernel.
Why it's wrong here
Containers share host kernel.
- ✗
Each container has its own operating system.
Why it's wrong here
Containers share OS kernel.
- ✗
Containers use hypervisor for isolation.
Why it's wrong here
Hypervisor is for VMs.
- ✓
Containers require less overhead than VMs.
Why this is correct
No hypervisor, shares OS.
- ✓
Containers typically start in seconds.
Why this is correct
Faster than VMs.
Go deeper
Related to this question
Learn chapter
Process Management and System Monitoring
Key term
Kernel
The kernel is the core program of an operating system that manages hardware resources and provides essential services for all other software to run.
Key term
Operating system
An operating system (OS) is the core software that manages a computer's hardware and software resources, providing common services for computer programs.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This XK0-006 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 XK0-006 exam.