Which mode is used to configure an IP address on VLAN 1?

• A. User EXEC
• B. Privileged EXEC
• C. Global Configuration
• D. Interface Configuration

Answer: (D)

Configuring an IP address for a VLAN is done on the interface representing that VLAN. For VLAN 1, this is the SVI (interface Vlan1) on a switch. To set the IP, you must enter Interface Configuration mode for that specific interface (after entering privileged EXEC and, if needed, Global Configuration). In this mode, you apply commands like ip address x.x.x.x y.y.y.y to assign the address to the VLAN interface. User EXEC and Privileged EXEC are limited to non-configuration commands, and Global Configuration is used to reach into submodes but the actual per-interface IP assignment happens in Interface Configuration mode. So, the mode used to configure an IP address on VLAN 1 is Interface Configuration mode.