Comprehensive and Detailed Explanation (paraphrased, aligned to N10-009):
SSH provides secure, scriptable remote access used by automation/orchestration tools (e.g., leveraging CLI, NETCONF over SSH, or Ansible modules) to push configurations at scale.
A . RDP is primarily for Windows GUI sessions and is not commonly used for network device automation.
B . Telnet can be scripted but is insecure (plaintext); modern best practice is to use SSH.
D . GUI access is typically manual and not ideal for scalable, repeatable automation.
Reference (CompTIA Network+ N10-009):