CompTIA A+ Core 1 (220-1201)NetworkingHard
A technician wants a network printer to always receive the same IP address from the DHCP server without manually configuring a static IP on the printer itself. Which DHCP feature should the technician configure?
- ADHCP relay agent
- BDHCP reservation
- CDHCP scope exclusion
- DDHCP lease renewal
Show answer & explanationAnswer & explanation
Correct answer: B. DHCP reservation
A DHCP reservation binds a specific IP address to a device's MAC address within the DHCP scope, ensuring the device always receives the same IP address automatically while still using DHCP. Scope exclusions remove addresses from the pool entirely, and relay agents forward DHCP traffic across subnets.
Why the other options are wrong
- A. A relay agent forwards DHCP requests between subnets/VLANs but doesn't assign fixed addresses.
- C. A scope exclusion removes addresses from being assigned at all, not linking one to a specific device.
- D. Lease renewal simply extends how long a client keeps an assigned address, without guaranteeing the same one.
DHCP Reservation
A DHCP configuration that assigns a specific, consistent IP address to a device based on its MAC address, while still using automatic DHCP addressing.
- Requires the device's MAC address to bind the reservation
- Device still functions as a DHCP client
- Commonly used for printers, servers, and network devices needing consistent addressing
Memory trick: Reservation = 'Reserved seat' for one MAC address every time.