Chapter 1: Setting the scene

Question 1, answers A, B, D

Answer C is not correct because containers are less secure than virtual machines. This is due to the shared kernel model.

Question 2, answer B

Every virtual machine has its own kernel and is therefore more secure than a container. However, this makes them bigger, slower to start, and not a good fit for microservices architectures.

Question 3, answer D

Each container is a virtual operating system with its own root filesystem, its own process tree, and its own eth0 network interface.

Question 4, answers A, D

Containers virtualise operating system constructs such as process trees and filesystems. They do not virtualise hardware constructs such as CPUs and hard drives.

Question 5, answer A

Containers all share the OS and kernel of the host they’re running on. This makes them smaller than virtual machines and means you can run more containers on a host than virtual machines.

Question 6, answer D

Containers...