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

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

• A. FTP
• B. HTTP
• C. DHCP
• D. DNS

Answer: (C)

When a packet is received by a server with a destination port number of 67, it indicates that the client is requesting a service related to the Dynamic Host Configuration Protocol (DHCP). DHCP is used for automatically assigning IP addresses and other network configuration parameters to devices on a network, allowing them to communicate on an IP network. Port 67 is specifically utilized for DHCP server communication, where DHCP servers listen for requests from clients. When a client needs an IP address, it sends a broadcast message to the DHCP server, which listens on port 67. The server responds to the client by providing the necessary configuration details. This understanding of port numbers is vital in networking as it helps in identifying the protocols in use and the services being requested, ensuring efficient communication between clients and servers in a network environment. In contrast, the other options represent different services that use different port numbers; FTP typically uses port 21, HTTP uses port 80, and DNS uses port 53.

When a packet is received by a server with a destination port number of 67, it indicates that the client is requesting a service related to the Dynamic Host Configuration Protocol (DHCP). DHCP is used for automatically assigning IP addresses and other network configuration parameters to devices on a network, allowing them to communicate on an IP network.

Port 67 is specifically utilized for DHCP server communication, where DHCP servers listen for requests from clients. When a client needs an IP address, it sends a broadcast message to the DHCP server, which listens on port 67. The server responds to the client by providing the necessary configuration details.

This understanding of port numbers is vital in networking as it helps in identifying the protocols in use and the services being requested, ensuring efficient communication between clients and servers in a network environment. In contrast, the other options represent different services that use different port numbers; FTP typically uses port 21, HTTP uses port 80, and DNS uses port 53.