A client packet is received by a server. The packet has a destination port number of 69. What service is the client requesting?
- DNS
- DHCP
- SMTP
- TFTP
Explanation: The transport layer uses port numbers to identify and direct data to specific applications or services on a host. According to the standard assignments for well-known ports, port 69 is reserved for the Trivial File Transfer Protocol (TFTP). TFTP is a simple, connectionless protocol that utilizes UDP for best-effort, unacknowledged file delivery, requiring less overhead than FTP. When a server receives a packet with destination port 69, it identifies the request as a client seeking to use this specific file transfer service.
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