LPI 701-100 DevOps Tools Engineer Exam Practice Test

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.

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.

– rsync:src: example.txtdst: /tmp/example.txt

– copy:src: example.txtdest: /tmp/example.txt

– retrieve:src: example.txtdest: /tmp/example.txt

- cp:source: example.txtdst: /tmp/example.txt

- transfer:src: example.txtdest: /tmp/example.txt

CDNs require all elements of a web site to be served by the same CDN.

CDNs can stream large media files such as movies or music to clients.

CDNs are present in multiple locations to serve content close to clients.

CDNs serve huge numbers of clients with high bandwidth and low latency.

CDNs forward all requests to a backend server and never store content locally.

cloud-init provides the cloud-init-worker command which has to be invoked periodically within the running instance.

cloud-init provides systemd units which must be included in several stages of the booting process of the instance.

cloud-init provides its own startup mechanism which replaces the instance’s original init system, such as systemd.

cloud-init provides a Linux kernel module that must be included and loaded in the instance’s initramfs.

cloud-init provides the cloud-init-daemon service which is launched during startup and keeps the instance in sync with the desired configuration.

They accept SSH logins from the user vagrant with the password vagrant.

They accept SSH logins from the user vagrant with a publicly available SSH key pair.

The vagrant user can use sudo to obtain root privileges without additional authentication.

Their whole file system, including configuration files, is writable by any user, including vagrant.

They export their file system via NFS with full write permissions without any additional restrictions.

docker-c00001

2.0.17.172

container

c0023817

clever_ritchie