Which configuration management mechanism uses TCP port 22 by default when communicating with managed nodes?
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A. B. C. D.A.
The correct answer to the question is A. Ansible.
Ansible is a configuration management tool that allows administrators to automate the configuration of servers, applications, and network devices. It uses a simple, human-readable language called YAML to define configurations, and it communicates with managed nodes over SSH (Secure Shell) protocol by default.
SSH is a secure network protocol that allows secure remote access and command execution on a remote system. It uses TCP port 22 by default to establish a secure communication channel between the Ansible control node and the managed nodes.
Ansible uses SSH to transfer modules, scripts, and other configuration files to managed nodes, and it executes tasks on these nodes using the modules and scripts provided. The communication between the Ansible control node and the managed nodes is encrypted and secure, which ensures that sensitive information is not compromised during the configuration process.
In summary, Ansible uses TCP port 22 by default when communicating with managed nodes over SSH protocol, making it a secure and reliable configuration management tool for network administrators.