Docker Certified Associate Certification Training Course - Control Groups

The video tutorial explains the concept of control groups in Linux, which are essential for managing resources in containers. It covers how control groups ensure fair resource distribution among containers, preventing any single container from exhausting system resources. The tutorial also demonstrates how to limit container resources using Docker commands, specifically focusing on memory and CPU allocation.

What is the primary function of control groups in Linux containers?

• To enhance the graphical user interface

• To implement resource accounting and limiting

• To manage network connections

• To improve file system performance

Which option is used in Docker to limit the memory of a container?

• -m

• -p

• -c

• -d

What does the '-m' option in Docker specify?

• The minimum CPU usage

• The disk space allocation

• The maximum number of containers

• The memory limit for a container

How can you limit the CPU usage of a container in Docker?

• By using the '-d' option

• By setting the 'cpus' option

• By adjusting the '-c' option

• By configuring the '-p' option

In the example 'Docker run it cpus=2.5', what does '2.5' signify?

• 2.5 GB of memory allocated

• 2.5 containers running

• 2.5 portions of CPU share allocated

• 2.5 network connections