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GCDL Practice Question: The key difference between a virtual machine (VM)…
This GCDL practice question tests your understanding of the key difference between a virtual machine (vm)…. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
What is the key difference between a virtual machine (VM) and a container in terms of how they package and run applications?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Best answer
VMs include a full guest OS; containers share the host OS kernel and contain only the application and its dependencies.
This is the fundamental difference. VMs carry a full OS (gigabytes), making them slower to start and heavier. Containers share the host kernel (megabytes) and start in seconds.
B
Distractor review
VMs run on physical hardware; containers run in the cloud.
Both VMs and containers can run in the cloud or on physical hardware. The distinction is about how they package OS resources, not where they run.
C
Distractor review
VMs are only for Linux applications; containers support all operating systems.
VMs can run any OS (Linux, Windows, etc.). Containers are also primarily associated with Linux, though Windows containers exist. This distinction is about OS sharing, not OS support.
D
Distractor review
Containers are less secure than VMs because they share hardware.
Both containers and VMs share physical hardware. VMs offer stronger isolation (separate OS kernel), but containers with proper security controls (user namespaces, seccomp) are production-safe.
Common exam trap
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Technical deep dive
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Related practice questions
Related GCDL practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A traditional retailer currently maintains its own data centers, purchasing servers every 3–5 years and paying for facilities, power, and staff regardless of demand. When it migrates its workloads to the public cloud, which change in cost model does it experience?
Question 2
An e-commerce company plans its infrastructure for peak shopping events (e.g., Black Friday) which drive 50× normal traffic. On-premises, they must maintain 50× capacity year-round. In the cloud, they provision 50× capacity only during peak periods. Which cloud characteristic enables this cost optimization?
Question 3
Which term describes the process by which organizations integrate digital technology into all areas of their business, fundamentally changing how they operate and deliver value to customers?
Question 4
When a company moves from maintaining its own data center to using Google Cloud, which operational responsibility does Google assume that the company previously managed?
Question 5
A hospital runs a patient records system that must remain on-premises due to strict regulatory data residency requirements. However, they also want to use cloud-based AI for diagnostic imaging analysis. Which cloud deployment model best describes their architecture?
Question 6
What is virtualization in the context of cloud computing, and why is it fundamental to how cloud providers deliver services?
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FAQ
Questions learners often ask
What does this GCDL question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: VMs include a full guest OS; containers share the host OS kernel and contain only the application and its dependencies. — A VM virtualizes the entire hardware stack — it includes a full guest operating system, kernel, and all system libraries. Containers package only the application and its dependencies, sharing the host OS kernel. Containers are therefore much lighter (megabytes vs. gigabytes), start in seconds (vs. minutes for VMs), and pack more workloads per host. VMs provide stronger isolation (each has its own OS); containers provide process-level isolation. Both run on the same cloud infrastructure.
What should I do if I get this GCDL question wrong?
Identify which GCDL exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
About these practice questions
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This GCDL practice question is part of Courseiva's free Google Cloud 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 GCDL exam.