How dhcp work and what is the function of relay agent.

Question

Accepted Answer

DHCP assigns IP addresses to devices on a network. Relay agent forwards DHCP messages between subnets.

DHCP (Dynamic Host Configuration Protocol) assigns IP addresses, subnet masks, default gateways, and DNS servers to devices on a network.
DHCP server listens for DHCP requests from clients and responds with an IP address lease.
Relay agent is used when DHCP server and client are on different subnets. It forwards DHCP messages between subnets.
Relay agent adds its own IP address to the DHCP message and forwards it to the DHCP server.
DHCP server sends the IP address lease to the relay agent, which then forwards it to the client.
Relay agent can be a router or a dedicated device.
DHCP snooping can be used to prevent rogue DHCP servers from assigning IP addresses on the network.

Top Sophos Technologies Network Engineer interview questions & answers