Free Linux Professional Institute DevOps Tools Engineer Exam 701 Exam 701-100 Exam Practice Test

Given the following excerpt of a Dockerfile:Run apt-get --y update && apt-get install --y fortunes && apt-get cleanWhy are the multiple apt-get commands combined in one RUN statement instead of using multiple RUN statements?

• To prevent the commands from running in parallel because Docker executes all RUN statements in their own container at the same time.
• To ensure the execution order of the commands because Docker might evaluate the statements of a Dockerfile in any order.
• To avoid the creation of unnecessary images because Docker creates a new image for each RUN statement.
• To execute both commands in the same container instance and void Docker to reset the container to the original base image.
• To execute the apt-get install command only if the apt-get update command was successful because Docker does not check the success of RUN statements.

Which of the statements below are true about the volume created by the following command? (Choose two correct answers.)docker run --v /data --ti debian

• The new /data volume contains a copy of the complete container's base image.
• The volume containing the container's rootfile system is retained until the /data volume is deleted.
• The /data volume is discarded when the container terminates.
• The /data volume can be attached to another Docker container.
• If the command is run a second time, another volume for /data is created.

Which of the log messages below matches the following Logstash grok filter?grok {match => [''message'', ''%{SYSLOGBASE} new node %{IPORHOST:node}'' ]}

• Jun 30 00:36:49 headnode: new node 198.51.100.103 at clustermanager:12353
• Jun 30 00:36:49 headnode clustermanager[12353]: new node 198.51.100.103
• Jun 30 00:36:49 headnode clustermanager[198.51.100.103]: new node
• %{SYSLOG-FROM:headnode clustermanager[12353]} new node 198.51.100.103
• clustermanager[12353]: Jun 30 00:36:49 headnode new node 198.51.100.103

Which of the following HTTP methods are used by REST? (Choose three correct answers.)

• CREATE
• REPLACE
• PUT
• DELETE
• GET

Which of the following container names could have been assigned automatically by Docker?

• docker-c00001
• 2.0.17.172
• container
• c0023817
• clever_ritchie

How does Vagrant run virtual machines?

• 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.

Which of the following mechanisms are used for service discovery in a container environment? (Choose two correct answers.)

• The container platform offers a command like docker service discover which should be run within a container.
• The container platform sets environment variables containing service information within the containers.
• The container platform lists localhost ports assigned to containers in each container's /etc/services file.
• The container platform mounts the sockets for all available services into the container's file systems.
• The container platforms maintains DNS records which point to containers offering a specific service.

Which of the following statements are true about Jenkins? (Choose two correct answers.)

• Jenkins is specific to Java based applications.
• Jenkins can delegate tasks to slave nodes.
• Jenkins only works on local files and cannot use SCM repositories.
• Jenkins' functionality is determined by plugins.
• Jenkins includes a series of integrated testing suites.

Which docker-machine sub command outputs a list of commands that set environment variables which are required to make docker work with a Docker host managed by docker-machine? (Specify only the sub command without any path or parameters.)

Which statement in a Dockerfile defines which command should be started in the container by default when it is started? (Specify ONLY the statement's name without any values or parameters.)