Is it necessary to configure a local DNS server to provide DNS settings to clients via DHCP server?

Configuring a local DNS server is not necessary to provide DNS settings to clients through a DHCP server. The DHCP server can simply relay information about DNS servers even if a local DNS server doesn't exist in the network.

When a DHCP server is set up, it can be configured to provide clients with the IP addresses of external DNS servers, such as those from an Internet Service Provider (ISP) or public DNS servers like Google (8.8.8.8) and Cloudflare (1.1.1.1). As a result, clients can still successfully resolve domain names without relying on a local DNS server.

Therefore, stating that it is necessary to have a local DNS server to serve DNS settings via DHCP is incorrect. The DHCP server's flexibility allows it to serve other DNS addresses from various sources, making it unnecessary to have a local DNS server in the configuration.