Which command sequence configures the router's hostname to CL1?

Which command sequence configures the router's hostname to CL1?

• A. Router(config)# hostname CL1
• B. Router(config)# set hostname CL1
• C. Router(config-line)# hostname CL1
• D. Router(config)# system hostname CL1

Answer: (A)

Setting a router’s hostname is done by using the hostname command in global configuration mode. After entering configure terminal, you’re in global config mode (prompt shows Router(config)#). Issuing the command hostname CL1 sets the device’s name to CL1, and the prompt will reflect the new hostname. This is the proper, standard IOS syntax. The other options don’t fit because they’re not valid IOS commands or modes for changing the device name: there isn’t a set hostname command in IOS, and configuring a hostname from line configuration mode (Router(config-line)#) is not allowed for the device identity. Using a system keyword (Router(config)# system hostname CL1) isn’t valid syntax in IOS either.

Setting a router’s hostname is done by using the hostname command in global configuration mode. After entering configure terminal, you’re in global config mode (prompt shows Router(config)#). Issuing the command hostname CL1 sets the device’s name to CL1, and the prompt will reflect the new hostname. This is the proper, standard IOS syntax.

The other options don’t fit because they’re not valid IOS commands or modes for changing the device name: there isn’t a set hostname command in IOS, and configuring a hostname from line configuration mode (Router(config-line)#) is not allowed for the device identity. Using a system keyword (Router(config)# system hostname CL1) isn’t valid syntax in IOS either.