#DHCP

What?

• DHCP is like a waiter in a restaurant who assigns tables (IP addresses) to customers (devices) as they come in, ensuring everyone gets seated and served without having to wait too long.

Why?

• Simplifies network administration by automating IP address allocation.
• Eliminates the need for manual IP configuration, reducing human errors.
• Supports dynamic IP address assignment, optimizing IP address usage.
• Facilitates easy addition and removal of devices from the network.

How?

• When a device connects to the network, it sends a DHCP discover message.
• A DHCP server responds with an offer, providing an available IP address.
• The device sends a request for the offered IP address.
• The DHCP server acknowledges the request and assigns the IP address to the device.
• The device configures its network settings using the assigned IP address, subnet mask, default gateway, and DNS servers.

Interview Questions:

• What is DHCP, and why is it used in networking?
• Explain the DHCP lease process.
• How do DHCP relay agents work, and when are they used?
• What are the benefits of using DHCP in a large-scale network environment?
• How does DHCP help in AWS DevOps environments, and what are DHCP option sets used for?