What is DHCP and what it is used for?

DHCP is for Dynamic IP address release in a network where it is configured

DHCP stands for Dynamic host configuration protocol it’s a network protocol that assign the IP address automatically to systems from a defined range of IP address and scope which is configured for a particular network and we can also fix here a excluded IP range for particular device 

DHCP is a network protocol that enables a server to automatically assign an IP address to a computer from a defined range of numbers (scope)configured for a given network

Dynamic host configuration protocol,it used to asign the IP by dynamically as cleient request

DHCP stands for Dynamic Host Configuration Protocol. It is used to assign number of IP addresses to the clients systems. DHCP functions under DORA [Discover, Offer, Request, Acknowledgement] Process. 

DHCP stands for Dynamic Host Configuration Protocol. It is used to dynamically provide ip address, dns-address, default gateway etc information to each host in a LAN.

DHCP uses UDP transport protocol and port number 67 and 68 for server nad client respectively. Ipv4 uses stateful DHCP whereas IPv6 uses either stateful or stateless DHCP server. 

Client while booting up broadcasts DISCOVER message to the LAN, DHCP server on receiving the message sends out OFFER to requesting host. Now client selects the ip address according to its criteria, and if multiple DHCP servers send back replies client only selects one DHCP server. The client sends out the selected ip address in DHCP REQUEST message. The DHCP server then assigns the ip address to the host and sends out ACK.

DHCP is Dynamic Host Protocol which is used to Give Automatic IP address to Client

DHCP is must of Used in the LAN as WAN 

DHCP Server is a pool of IP Addresses which assign the IP address to the computers joined on a network. 

Example: You have a wireless Internet router at home which has DHCP enabled, when you connect your laptop/PC/Phone to the network all the devices get the unique IP Address same subnet and same Gateway, if you have to do it manually without DHCP server than you also have to remember what IP you have assigned to which device.