Which of the following BEST describes running on a Linux system?

Question

Options

• AContainers only need the namespaces functionally to run on a Linux system available since kernel 2.6.
• BContainers need a hypervisor to run a Linux system. Cgroups namespaces are functionalities used for
• CContainers only need the cgroups functionality for running on a Linux system. Namespaces is not a
• DContainers use the cgroups and namespaces functionalities to isolate processes and assign hardware

• A
  8% (3)
• B
  3% (1)
• C
  3% (1)
• D
  87% (34)

Explanation

Linux containers rely on two core kernel features working together: cgroups (control groups) and namespaces. Cgroups limit and account for resource usage (CPU, memory, disk I/O) per process group, while namespaces isolate processes so they have their own view of system resources (PID space, network interfaces, mount points, etc.). Together, these two features provide the isolation and resource control that define a container - no hypervisor is required. Option A is wrong because cgroups are also needed. Option B is wrong because containers do not require a hypervisor. Option C is wrong because namespaces are essential for isolation.

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