Which line assigns the IP address to VLAN 40's SVI in the sample?

Which line assigns the IP address to VLAN 40's SVI in the sample?

• A. interface vlan 40
• B. ip address 10.10.40.1/24
• C. vlan 40
• D. ip address 10.10.30.1/24

Answer: (B)

Assigning an IP to a VLAN’s SVI is done by configuring an IP address on that VLAN’s virtual interface. The line that sets the address is the one with the ip address command and the specific address 10.10.40.1/24. Entering interface vlan 40 puts you in the SVI’s configuration context, but it does not by itself assign an IP; you need the ip address command to actually attach the network address to that SVI. The line with 10.10.30.1/24 would place the SVI in a different subnet, which wouldn’t be appropriate for VLAN 40. The vlan 40 line would create or select the VLAN context, not assign an IP address at all. Therefore, the line that assigns the IP address to VLAN 40’s SVI is the one that uses ip address 10.10.40.1/24. This makes VLAN 40’s SVI have an address in the 10.10.40.0/24 network, suitable as the gateway for devices in that VLAN.

Assigning an IP to a VLAN’s SVI is done by configuring an IP address on that VLAN’s virtual interface. The line that sets the address is the one with the ip address command and the specific address 10.10.40.1/24.

Entering interface vlan 40 puts you in the SVI’s configuration context, but it does not by itself assign an IP; you need the ip address command to actually attach the network address to that SVI. The line with 10.10.30.1/24 would place the SVI in a different subnet, which wouldn’t be appropriate for VLAN 40. The vlan 40 line would create or select the VLAN context, not assign an IP address at all.

Therefore, the line that assigns the IP address to VLAN 40’s SVI is the one that uses ip address 10.10.40.1/24. This makes VLAN 40’s SVI have an address in the 10.10.40.0/24 network, suitable as the gateway for devices in that VLAN.