Which statement best describes a DHCP reservation?

• A. It contains a unique client identifier.
• B. It does not contain any client identifier.
• C. It is always global across all networks.
• D. It relies on a roaming host for configuration.

Answer: (B)

A DHCP reservation works by binding a specific device to a fixed IP within a defined network scope. The server uses a unique client identifier—typically the device’s MAC address (or a configured DHCP client identifier)—to recognize that device and always assign the same IP when it requests an address. This deterministic mapping is stored on the DHCP server for that particular scope, so it isn’t global across all networks and doesn’t depend on a roaming host.

So the idea is that a reservation relies on identifying the client with a unique identifier to ensure a consistent IP assignment, rather than claiming there’s no client identifier involved.