Cisco Certified Support Technician (CCST) NetworkingIP ServicesMedium
A network administrator is configuring a DHCP server. They need to ensure that a specific server always receives the same IP address from the DHCP pool, even if the server is rebooted or its lease expires. What DHCP feature should the administrator configure?
- ADHCP Relay
- BDHCP Scope
- CDHCP Exclusion
- DDHCP Reservation
Show answer & explanationAnswer & explanation
Correct answer: D. DHCP Reservation
DHCP reservation allows an administrator to assign a permanent IP address to a specific device based on its MAC address. This ensures the device always receives the same IP address from the DHCP server.
Why the other options are wrong
- A. DHCP Relay forwards DHCP requests between broadcast domains and DHCP servers, not for specific IP assignments.
- B. DHCP Scope defines a range of IP addresses available for dynamic assignment, not for permanent assignment to a single device.
- C. DHCP Exclusion prevents specific IP addresses from being assigned, but doesn't guarantee a specific address to a specific device.
DHCP Reservation
A feature in DHCP that assigns a permanent IP address to a specific network device based on its MAC address.
- Guarantees a specific IP address.
- Uses the device's MAC address.
- Useful for servers, printers, or other fixed-address devices.
Memory trick: Reservation: Reserved for specific MACs.