Palo Alto Networks Cybersecurity Entry-Level Technician (PCCET) — Question 66

What differentiates Docker from a bare metal hypervisor?

Answer options

• A. Docker lets the user boot up one or more instances of an operating system on the same host whereas hypervisors do not
• B. Docker uses more resources than a bare metal hypervisor
• C. Docker is more efficient at allocating resources for legacy systems
• D. Docker uses OS-level virtualization, whereas a bare metal hypervisor runs independently from the OS

Correct answer: D

Explanation

The correct answer is D because Docker utilizes OS-level virtualization which allows it to share the host OS's kernel, unlike a bare metal hypervisor that operates independently and requires its own OS. Option A is incorrect because hypervisors can also run multiple OS instances. Option B is misleading as Docker typically uses fewer resources compared to a hypervisor. Option C is not accurate since Docker is not specifically designed for better resource allocation for legacy systems.