What are the two commonly used device management modes A. Console port and Telnet B. HTTP and HTTPS C. CLI and web system D. FTP and TFTP

To determine the two commonly used device management modes from the given options, let's analyze each choice:

1. A. Console port and Telnet

   • Console port is a direct connection used for device management, while Telnet allows remote management over a network.

2. B. HTTP and HTTPS

   • Both are protocols used for web management but are not considered traditional device management modes.

3. C. CLI and web system

   • CLI (Command Line Interface) is a common method for device management, while web system refers to web-based management interfaces.

4. D. FTP and TFTP

   • FTP (File Transfer Protocol) and TFTP (Trivial File Transfer Protocol) are primarily file transfer protocols, not management modes.

Final Answer

The two commonly used device management modes are A. Console port and Telnet, and C. CLI and web system.