Ansible is an automation and configuration management tool that uses human-readable YAML playbooks to define tasks, enabling consistent and agentless automation across systems.

JSON (JavaScript Object Notation) is a lightweight data-interchange format that is easy for humans to read and write, and easy for machines to parse and generate. JSON is commonly used to transmit data between a server and a client, as it is language-independent and can be used in many environments.

The docker ps command lists all running containers, allowing the administrator to verify whether the application's containers are active.

The dig comptia.com output shows NXDOMAIN and that the query is being sent to
10.255.255.254, which is not a valid DNS server. This indicates a misconfigured DNS client configuration (e.g., /etc/resolv.conf). Fixing the DNS settings will allow proper hostname resolution.

Monitoring thresholds define acceptable limits for metrics and are primarily used to trigger alerts when those limits are exceeded, allowing administrators to respond before issues escalate.