Creating VLAN and Assigning it to an Interface on a Switch: Step-by-Step Guide
Which command sequence can be used to create VLAN 20 and assign it to an interface on a switch?
a. Switch(config)#vlan 20 Switch(config)#Interface FastEthernet 0/1 Switch(config-if)# switchport access vlan 20
b. Switch(config)#Interface FastEthernet 0/1 Switch(config-if)#vlan 20 Switch(config-vlan)#switchport access vlan 20
c. Switch(config)#vlan 20 Switch(config)#interface vlan 20 Switch(config-if)#switchport trunk native vlan 20
d. Switch(config)#vlan 20 Switch(config)#Interface vlan 20 Switch(config-if)# switchport access vlan 20
e. Switch(config)#vlan 20 Switch(config)#Interface vlan 20 Switch(config-if)# switchport trunk allowed vlan 20
Final Answer: B
Answer:
Option B is correct because it uses the proper syntax to assign VLAN 20 to a specific interface on the switch, ensuring that all traffic on that interface belongs to VLAN 20. Option B follows the standard Cisco IOS configuration syntax for creating a VLAN and assigning it to an interface on a switch.
Option B is the best choice among the given options. It provides the correct command sequence to create VLAN 20 and assign it to an interface on a switch. Let's break down the commands in option B:
Step-by-Step Guide:
1. Switch(config)# Interface FastEthernet 0/1: This command enters the interface configuration mode for FastEthernet 0/1, where you can configure specific settings for that interface.
2. Switch(config-if)# vlan 20: This command assigns VLAN 20 to the interface FastEthernet 0/1, indicating that all traffic on this interface will be associated with VLAN 20.
3. Switch(config-vlan)# switchport access vlan 20: This command sets the access mode for the interface, specifying that it should be in VLAN 20 as an access port.
Options A, C, D, and E contain incorrect commands or syntax errors. For example, option A has a misspelled "vlan" command, option C attempts to create a VLAN interface (SVI) instead of assigning VLAN 20 to a physical interface, option D uses an incorrect command structure, and option E has incorrect commands and syntax.
In summary, option B is the only one that correctly configures VLAN 20 and assigns it to an interface on a Cisco switch. It is important to use the right syntax and commands when setting up VLANs to ensure smooth network operations and proper segmentation of traffic.