Which commands will allow hosts on a new subnet to receive addresses from the DHCPv4 server?

Which commands will allow hosts on a new subnet to receive addresses from the DHCPv4 server?

• A. R1(config)#interface g0/0
• B. R1(config-if)#ip helper-address 10.2.0.250
• C. R1(config)#ip route 10.2.0.0 255.255.255.0
• D. R1(config-if)#ip address dhcp

Answer: (A)

The correct action for allowing hosts on a new subnet to receive addresses from a DHCPv4 server involves configuring the router to relay DHCP requests. Specifically, the command that facilitates this is the one that configures the interface of the router to point to the DHCP server's IP address using the helper address. For a DHCP server to provide addresses to clients in a different subnet, the router must be configured to forward the DHCP broadcast messages. The command to achieve this is to specify the IP address of the DHCP server within the interface context using "ip helper-address." This configuration allows the router to intercept the broadcast messages from the subnet and forward them to the specified DHCP server, which will then respond with an appropriate IP address. Setting the interface with "ip address dhcp" would enable the interface to receive its IP address from a DHCP server, but this is not the command required to assist other hosts in a different subnet. Similarly, creating an IP route or simply identifying the interface does not ensure that DHCP clients in a new subnet can get their addresses. By using the appropriate command to set the helper address, the connectivity for DHCP clients across different subnets is established, ensuring they can successfully receive an IP address from the DHCP server.

The correct action for allowing hosts on a new subnet to receive addresses from a DHCPv4 server involves configuring the router to relay DHCP requests. Specifically, the command that facilitates this is the one that configures the interface of the router to point to the DHCP server's IP address using the helper address.

For a DHCP server to provide addresses to clients in a different subnet, the router must be configured to forward the DHCP broadcast messages. The command to achieve this is to specify the IP address of the DHCP server within the interface context using "ip helper-address." This configuration allows the router to intercept the broadcast messages from the subnet and forward them to the specified DHCP server, which will then respond with an appropriate IP address.

Setting the interface with "ip address dhcp" would enable the interface to receive its IP address from a DHCP server, but this is not the command required to assist other hosts in a different subnet. Similarly, creating an IP route or simply identifying the interface does not ensure that DHCP clients in a new subnet can get their addresses.

By using the appropriate command to set the helper address, the connectivity for DHCP clients across different subnets is established, ensuring they can successfully receive an IP address from the DHCP server.