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

A. CREATE

B. REPLACE

C. PUT

D. DELETE

E. GET

What happens when the following command is executed twice in succession? doker run -tid -v data:/data debian bash

A. The second command invocation fails with an error stating that the volumen data is already associated with a running container.

B. The container resulting from the second invocation can only read the content of /data/ and can not change it.

C. The original content of the contents of the data is available in both containers, although changes stay local within each container.

D. Both containers share the container of the data volume, have full permissions to alter its content and mutually see their repective changes.

E. Each container is equipped with its own independent data volumen, available at /data/ in the respective container.

A docker swarm contains the following node: Whic of the nodes should be configured as DOCKER_HOST in order to run services on the swarm? (Specify ONLY the HOSTNAME of one of the potential target nodes)

A. In a Docker Swarm, you need to set the DOCKER_HOST environment variable on the manager node in order to run services on that node. In your example, node "node-1" is the manager node (with a * symbol) and its status is "Ready" and "active", and it is also the "Leader". Therefore, you should set the DOCKER_HOST environment variable on node "node-1". To set the DOCKER_HOST environment variable, you can use the following command (assuming that you are using a bash shell): export DOCKER_HOST=tcp://node-1:2375 This will set the DOCKER_HOST environment variable, causing Docker commands to default to connecting to port 2375 on node "node-1". Please note that you can also add the above command to ~/.bashrc or ~/.bash_profile file to automatically set the DOCKER_HOST environment variable whenever a new bash shell is opened. It should be noted that if your Docker Swarm uses a different network mode (e.g., overlay network), then you may need to specify a different network mode and port in the DOCKER_HOST environment variable. The specific situation depends on your Docker Swarm configuration.

After creating a new file within a directory which to a Git repository, which commands have to be used in order to make Git manage the new file and upload it to the already existing remote origin? (Choose THREE correct answers) A. git init

B. git push

C. git commit

D. git add

E. git remote

Which of the following statements are tru regarding microservices? (Choose TWO correct answers)

A. Microservices limit the risk of updates and deployments because failures only affect a limited amount of functionality.

B. Microservices allow the conbination of different application development platforms within one application.

C. Microservices complicate updates because individual microservices cannot be changed once an application is delivered.

D. Microservices interact faster tan components within a monolithic software application due to their standardized APIs.

E. Microservices are not suited for container deployments due to their complexity and resource consumption.

Which of the following benefits are realized by using immutable servers? (Choose TWO correct answers)

A. Immutable servers are flexible in how they are configured during their deployment.

B. Immutable servers are not connected to a nerwork and cannot be attacked remotely.

C. Immutacle servers are usable right after they are started without further configuration.

D. Immutable servers bundle all components required for an application and never need external services.

E. Immutable servers ensure production servers are identical staging servers.

How does Packer interact with system images?

A. Packer creates an instance based on a source image, prepares the instance through a network connection and bundles the resulting.

B. Packer has to be installed within the target image and is executed during the image's first boot in order to execute preparation tasks.

C. Packer installs a client within the image which has to be run periodically via cron in order to retrieve the latest template from the Packer server and appy it locally.

D. Packer downloads and extracts an image in order to make changes to the image's file system, repack the modified image and upload it again.

E. Packer periodically connects through the network to the Packer daemons of all running Packer images in order to re-apply the wholw template to the running instance.

After a node's configuration is changed on a Puppet master, how can the node be instructed to apply the new configuration inmediately if the node runs a Puppet agent as a background service?

A. Run puppet refresh on the node.

B. Run puppet agent -t on the node.

C. Restart the puppet master process.

D. Run puppet master --distribute on the master.

E. Run puppet agent --node all --refresh on the master.

What Chef Solo?

A. A special Linux distribution which automatically reverts any change to the system not applied using Chef.

B. A package manger that retrieves software installed using Chef in the generic Chef Menu Format, CMF, instead of using the target.

C. A simplified configuration format for Chef which provides only a subset of the original Chef configuration options.

D. An extension to Chef to install operating systems on bare metal servers of vitual machines.

E. A tool to use Chef to manage a local system instead os using a distributed chef infrastructure.

What King of data is provided to Prometheus by a monitored service?

A. The monitored service provides metric values for keys defined in Prometheus' monitoring schema.

B. The monitored service provides one metric value which replaces the former calue of the service's register in Prometheus.

C. The monitored service provides a status in terms of one of three well defined service states.

D. The monitored servide provides an interface which Prometheus queries for the value of a specific metric key.

E. The monitored service provides arbitrary pairs of keys and metric values which are scraped by Prometheus.