What is the purpose of a roaming host in DHCP?

• A. To provide identical IP addresses to multiple clients.
• B. To provide specific/custom DHCP config to a client regardless of location.
• C. To reserve an IP address for a device permanently.
• D. To enable dynamic DNS updates for roaming clients.

Answer: (B)

Roaming host centers on giving a mobile client a consistent set of DHCP configuration no matter which DHCP server or subnet handles its request. When a client roams, different servers would normally supply whatever options each subnet is configured to provide. A roaming host ties that client’s identity to a specific, customized DHCP configuration, so the client receives the same options (like DNS servers, domain, or other vendor options) regardless of location. This is why it’s described as delivering a specific/custom DHCP config to the client no matter where it connects.

This isn’t about handing out the same IP address to many devices, nor about permanently locking an IP to a device, and it’s not primarily about dynamic DNS updates. It’s about maintaining consistent, targeted DHCP settings for a particular host as it moves across the network.