Which network device OS is typically interacted with via CLI, with access possible through the console port, Telnet, or SSH?

Which network device OS is typically interacted with via CLI, with access possible through the console port, Telnet, or SSH?

• A. Cisco NX-OS
• B. Cisco IOS
• C. Cisco ASA
• D. Cisco IOS XE

Answer: (B)

The ability described—managing the device through a command-line interface that you can reach via the console port for local access or through Telnet or SSH for remote access—is the hallmark of Cisco IOS. IOS is the traditional network OS for Cisco routers and switches, built around a robust CLI used for configuration and monitoring. While NX-OS, ASA, and IOS XE all offer CLI access as well, the classic combination of a CLI accessible via console, Telnet, or SSH is most closely associated with Cisco IOS.

The ability described—managing the device through a command-line interface that you can reach via the console port for local access or through Telnet or SSH for remote access—is the hallmark of Cisco IOS. IOS is the traditional network OS for Cisco routers and switches, built around a robust CLI used for configuration and monitoring. While NX-OS, ASA, and IOS XE all offer CLI access as well, the classic combination of a CLI accessible via console, Telnet, or SSH is most closely associated with Cisco IOS.