Refer to the exhibit. Based on the exhibited configuration and output, why is VLAN 99 missing?

Based on the configuration shown in the exhibit, VLAN 99 is missing from the VLAN brief output because it has not yet been created on the switch. The commands shown indicate that an interface for VLAN 99 has been configured with an IP address, and it has been brought up with the no shutdown command. However, if VLAN 99 does not exist in the switch’s VLAN database, it will not appear in the VLAN brief output, even if an SVI (Switched Virtual Interface) for it has been configured.

The correct action to resolve this issue would be to create VLAN 99 on the switch with the command vlan 99 in global configuration mode. After creating the VLAN, it should appear in the VLAN brief output and function as expected, assuming there are no other issues.