DHCP uses which of the following ports by default?

The correct answer is C. 68. DHCP operates over UDP and uses two well-known ports: port 67 for the DHCP server (receives client requests) and port 68 for the DHCP client (receives server responses). Of the options provided, only port 68 is a DHCP port. The other options are for different protocols: port 21…

Networking concepts

Question

Options

A21
B23
C68
D443

How the community answered

(34 responses)

B
6% (2)
C
91% (31)
D
3% (1)

Explanation

DHCP operates over UDP and uses two well-known ports: port 67 for the DHCP server (receives client requests) and port 68 for the DHCP client (receives server responses). Of the options provided, only port 68 is a DHCP port. The other options are for different protocols: port 21 is FTP (control), port 23 is Telnet, and port 443 is HTTPS. In the DHCP exchange (DORA: Discover, Offer, Request, Acknowledge), clients send broadcasts from port 68 to port 67, and the server replies from port 67 to port 68.

Topics

#DHCP#port 68#UDP ports#well-known ports

Community Discussion

No community discussion yet for this question.

Full N10-005 Practice