A DHCP lease is a temporary assignment of an IP address and other network configuration parameters (such as DNS and gateway) to a device. The lease is renewed periodically to maintain the assignment. * Why Not A (A definition of the scope of addresses): The DHCP scope defines the range of IP addresses but is not the lease itself. * Why Not B (A reservation of an IP configuration): DHCP reservations ensure a specific device always receives the same IP address, but this is not the lease. * Why Not D (A translation of network names to IP addresses): This describes DNS, not DHCP. CompTIA A+ Exam Reference: Core 1 (220-1101), Section 2.6, DHCP concepts.