A client packet is received by a server. The packet has a destination port number of 67. What service is the client requesting?

Last Updated: May 3, 2026
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A client packet is received by a server. The packet has a destination port number of 67. What service is the client requesting?

  • FTP
  • DHCP
  • Telnet
  • SSH

Explanation: The transport layer uses port numbers to identify specific applications and services. According to the IANA assignments for well-known ports, port 67 is reserved for the Dynamic Host Configuration Protocol (DHCP) server using the UDP protocol. When a server receives a packet with this destination port, it identifies the request as a client seeking to automatically acquire an IP configuration, including an IP address, subnet mask, and default gateway. While port 68 is used by the DHCP client to receive responses, port 67 is the standard destination for requests sent toward the server.

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