This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams.

In this episode you will learn:

- Telnet sends all data, including usernames and passwords, in cleartext over TCP port 23, making it highly insecure.

- SSH provides a secure, encrypted channel for remote management over TCP port 22 and requires a hostname, domain name, and RSA keys to be configured on a Cisco device.

- TFTP uses UDP port 69, is connectionless, and lacks authentication, making it a simple but insecure choice for file transfers on trusted local networks.

- FTP is a more robust, connection-oriented protocol using TCP ports 20 (data) and 21 (control) that requires authentication, but still transmits credentials in cleartext.

- For secure file transfers on a Cisco device, the exam expects you to know SCP (Secure Copy Protocol), which leverages the encryption of an established SSH session.

For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep