Check all of the DHCP Server Options that are implemented for DHCP-Client and not Custom?

The correct answer is that the DNS server option is implemented for DHCP clients by default and is not considered a custom option. In a typical DHCP server configuration, the DNS server option is automatically provided to clients to inform them of the address of the DNS service they should use for name resolution on the network. This helps clients resolve domain names to IP addresses without requiring manual configuration.

The gateway option, while important for directing traffic outside of the local network, is considered a fundamental networking configuration rather than a default behavior assigned solely by DHCP without customization. Similarly, the WINS server and NTP server options are not standard DHCP configurations. They are specific additions that may be included if the network environment requires them, but they do not come preconfigured out of the box for all DHCP clients. Thus, the only option that is universally implemented for DHCP clients without any customization is the DNS server option.