A packet capture shows a laptop receiving its DHCP offer. Which port is the laptop using for that offer?
Select an answer to reveal the explanation.
Short Explanation
The laptop is the client waiting for the offer, and that wait sits on UDP 68. You are not looking at the server's port, the web port, or the encrypted web port.
Full Explanation
DHCP uses UDP. The server sends from port 67, and the client receives the offer on port 68. The capture shows the laptop receiving the offer, so the laptop is using UDP port 68. UDP port 67 is the server side. Calling it the client's port swaps the two ends. TCP port 80 is ordinary web traffic. It does not carry a DHCP offer. TCP port 443 is encrypted web traffic. It does not assign an address. Exam caveat: you will see both 67 and 68 in the same exchange. The port the laptop is using to receive the offer is 68. Operational check: filter the capture for the offer and confirm the laptop's port is 68. Confirm you are looking at the laptop's port, not the server's port in the same packet. Write what you found on the ticket.