A network technician is configuring dynamic network services for a newly created VLAN across a corporate router. The network services server resides on a different physical subnet. Which TWO configurations or parameters are required on the local router interface to ensure client computers on the new VLAN can successfully obtain IP addresses dynamically? (Select TWO.)
- An IP helper / DHCP relay address pointing to the remote DHCP server's IP addressCevap
- A active DHCP scope matching the new subnet configured on the central DHCP serverCevap
- CA static CNAME record mapping the router interface IP address to the DHCP port
- DAn inbound router access control list permitting UDP destination port 53 on the VLAN interface
- EConfiguring the DHCP server address directly as the default gateway for client network adapters
Cevap
The two required elements are configuring an IP helper/DHCP relay address on the local router interface pointing to the remote server, and ensuring a valid DHCP scope matching the new subnet exists on the central server.
DHCP client discovery relies on broadcast packets which do not pass through routers. Configuring an IP helper/relay on the router forwards these requests as unicast traffic to the server. Furthermore, the server requires a configured scope for the client's subnet to hand out valid IP addresses.
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DHCP Relay and Scope Configuration
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