Which command is used to verify the configuration register setting?

Which command is used to verify the configuration register setting?

• A. show config
• B. show version
• C. show register
• D. show boot

Answer: (B)

The command used to verify the configuration register setting is "show version." This command provides not only the software version running on the device but also includes critical information such as the configuration register value. The configuration register setting is essential for determining how the router or switch boots, including aspects like whether it boots from Flash memory or loads a specific IOS image. When executing this command, among the output, you'll find a line that explicitly lists the configuration register value, facilitating the understanding of how the device will operate at startup. This value is often displayed in a hexadecimal format and is crucial for troubleshooting boot issues or altering the boot process. The other commands do not provide the needed information about the configuration register. "show config" does not display the configuration register but rather the running configuration. "show register" is not a valid command in Cisco devices; instead, the configuration register is shown within the "show version" output. Lastly, "show boot" focuses on the boot system commands and procedures but does not offer insights into the configuration register value itself.

The command used to verify the configuration register setting is "show version." This command provides not only the software version running on the device but also includes critical information such as the configuration register value. The configuration register setting is essential for determining how the router or switch boots, including aspects like whether it boots from Flash memory or loads a specific IOS image.

When executing this command, among the output, you'll find a line that explicitly lists the configuration register value, facilitating the understanding of how the device will operate at startup. This value is often displayed in a hexadecimal format and is crucial for troubleshooting boot issues or altering the boot process.

The other commands do not provide the needed information about the configuration register. "show config" does not display the configuration register but rather the running configuration. "show register" is not a valid command in Cisco devices; instead, the configuration register is shown within the "show version" output. Lastly, "show boot" focuses on the boot system commands and procedures but does not offer insights into the configuration register value itself.