701-100 DevOps Tools Engineer Question and Answers

A Vagrant guest configuration file that is used to create instances of the box.

Configuration files for provisioners such as Ansible.

The installer for the Vagrant version which is required to run the box.

A metadata file describing the box and its requirements.

A base file system image in a format supported by the provider of the box.

with_nodes

with_playbook

with_sequence

with_items

with_nested

Vagrant uses a vagrant-specific hypervisor called VagrantVM.

Vagrant has to be run within a running virtual machine which is not controlled by Vagrant.

Vagrant ships with an embedded version of VirtualBox.

Vagrant uses so-called provides which control external hypervisors such as VirtualBox.

Vagrant generates virtual machine images but does not provide a mechanism to run them.

docker-swarm listnodes

docker engine ls

docker node ls

docker machine ls

docker swarm nodes

Microservices facilitate the replacement of the implementation of a specific functionality.

Microservices applications are hard to scale because microservice architecture allow only one instance of each microservice.

Integration tests for microservices are not possible until all microservices forming a specific application are completely developed.

Interaction between microservices can be slower that the interaction of similar components within a monolithic application.

Within one application, individual microservices can be updated and redeployed independent of the remaining microservices.