Docker Certified Associate Certification Training Course - Differentiate Docker and Virtualization

The video tutorial compares virtualization and Docker containers. It explains that virtualization requires a hypervisor and a guest operating system, leading to resource wastage. In contrast, Docker containers share the host operating system, making them lightweight and efficient. The tutorial highlights that containers are better for short-term tasks and quick scaling, while virtual machines are suited for long-term use and resource-intensive functions. Containers are easier to move across environments due to their smaller size and shared OS.

What is a key difference between virtualization and Docker in terms of system requirements?

• Virtualization requires a hypervisor, while Docker does not.

• Docker requires a hypervisor, while virtualization does not.

• Neither requires a hypervisor.

• Both require a hypervisor.

Which of the following is true about the operating systems used by containers and virtual machines?

• Virtual machines have their own operating system, while containers share the host OS.

• Both containers and virtual machines have their own operating systems.

• Both containers and virtual machines share the host operating system.

• Containers have their own operating system, while virtual machines share the host OS.

In terms of startup time, how do containers compare to virtual machines?

• Virtual machines start faster than containers.

• Both containers and virtual machines start in seconds.

• Containers start in seconds, while virtual machines take minutes.

• Containers take longer to start than virtual machines.

Why are containers considered more efficient in terms of resource usage compared to virtual machines?

• Virtual machines use fewer resources than containers.

• Containers use only the resources they need at any given time.

• Containers require more resources to be allocated permanently.

• Both containers and virtual machines use resources equally.

What is a significant advantage of containers over virtual machines in terms of scalability?

• Containers can be quickly scaled in and out as needed.

• Virtual machines can scale faster than containers.

• Both containers and virtual machines scale at the same rate.

• Containers are heavier and harder to scale.