Practice Questions

An online shop needs to store information about clients and orders. A list of fixed properties for clients and orders exists. The data storage should enforce specific data types on these properties and ensure that each order is associated with an existing client. Which of the following cloud services is capable of fulfilling these requirements?

• An in-memory database like memcached.
• An object store like OpenStack Swift.
• A messaging service like OpenStack Zaqar.
• A NoSQL database like MongoDB.
• A relational database like MariaDB.

What is tested by unit tests?

• The syntactical correctness of the source code of a software component.
• The formal validity of a service's external REST API.
• The integration of multiple component of the same software.
• The correctness of a specific function of a software component.
• The throughput, load capacity and latency of a service.

Which of the following tasks can Logstash fulfill without using other components of the Elastic Stack? (Choose three.)

• Receive log data from remote systems.
• Store log data persistently.
• Aggregate log data over a period of time.
• Process log data to extract information.
• Forward log data to other services.

Which of the following conditionals exist in an Ansible playbook? (Choose three correct answers.)

• with_nodes
• with_playbook
• with_sequence
• with_items
• with_nested

Which of the following kinds of data are suitable as artifacts in a continuous delivery pipeline? (Choose three correct answers.)

• Executable applications such as .exe files or .jar packages.
• Copies of the contents of source code repositories.
• Build configuration files such as Makefiles or Maven configurations.
• Compiled packages to be installed by a Linux package manager.
• Docker container images which contain an application.