DHCP problem

In the following question I am getting confused between A and C

Which of the following properties of DHCP would a technician use to ensure an IP address is not
leased out from the active scope?
A. Reservations
B. Lease times
C. Removing IPs from the active leases
D. Configuring the DNS options

answer : A

you can exclude an ip address while defining dhcp but how do you reserve an ip address.

Can someone help me out.

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Comments

Simrid

You can use DHCP to obtain an IP address and still set a reservation or you can assign it statically on the host itself depending on the use case. The reservations are set on a IP to MAC basis.

rob42

My take on this would be to setup a Static Lease for each LAN client on the network that needs to always be assigned the same IP address.

Routers have a Static DHCP Table where you can assign a MAC Address to an IP Address, thus reserving the IP Address to only be used with the recorded MAC Address.

I’m not sure if this answers your question, but that’s how I see it.

Edited to add…

I should have said that “Router that also act as a DCHP server…”