Cisco Certified Network Associate (CCNA) Practice Exam

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What is the command to enter configuration mode for a port channel and set it to trunk?

(config)#interface port-channel CHANNEL NUMBER
(config)#switchport access vlan
(config)#ip domain-name
(config-if)#no shutdown

The correct answer is: (config)#interface port-channel CHANNEL NUMBER

The correct command to enter configuration mode for a port channel and set it to trunk is indeed to use the interface command followed by the port-channel number. By entering "(config)#interface port-channel CHANNEL NUMBER," you are specifying which port channel you want to configure. Once in this mode, you can subsequently set the port channel as a trunk interface. This configuration allows the port channel to carry traffic for multiple VLANs, which is essential in environments that require VLAN tagging across trunk links. The other commands provided serve different purposes. For instance, configuring an access VLAN with the "switchport access vlan" command does not pertain to entering the port channel configuration mode or setting it as a trunk link; rather, it is used to specify a single VLAN assignment for access mode interfaces. The "ip domain-name" command is related to configuring the domain name for the device and is not related to interface configuration. Lastly, the "no shutdown" command is used to enable an interface, but it would not be used to enter port channel configuration or define its operation mode. Thus, the first command is specifically tailored for the task of configuring a port channel appropriately.