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Difficulty: MediumTCP vs UDP Comparison and Protocols

Match each transport layer operational characteristic or application scenario on the left with its corresponding transport protocol classification on the right.

  • 20-byte base header overhead using sequence and acknowledgment numbers for stateful data deliveryTCP Operational Characteristic
  • 8-byte fixed header overhead using a simple checksum field for connectionless data deliveryUDP Operational Characteristic
  • DHCP client and server broadcast communications operating across destination ports 67 and 68UDP-Based Application Protocol
  • HTTPS encrypted web sessions requiring ordered, lossless stream transport across port 443TCP-Based Application Protocol

Answer

The 20-byte base header with sequence numbers matches TCP Operational Characteristic. The 8-byte fixed header matches UDP Operational Characteristic. DHCP on ports 67/68 matches UDP-Based Application Protocol. HTTPS on port 443 matches TCP-Based Application Protocol.
TCP provides connection-oriented, reliable transmission using a 20-byte base header equipped with sequence numbers, which web applications like HTTPS (port 443) depend on. UDP provides connectionless, unacknowledged delivery using an 8-byte header, making it optimal for bootstrap protocols like DHCP (ports 67/68).

Step-by-Step Solution

1
Evaluate transport layer header structures and connection state tracking.
Recognize that a 20-byte base header with sequence and acknowledgment fields belongs to TCP, whereas an 8-byte fixed header with minimal overhead belongs to UDP.
TCP requires additional fields for state tracking and error recovery, whereas UDP omits connection tracking fields to reduce latency.
2
Classify upper-layer protocols by transport requirements and port assignments.
Associate DHCP (ports 67/68) with UDP due to its reliance on unacknowledged local network broadcasts, and associate HTTPS (port 443) with TCP due to its requirement for reliable stream delivery during TLS sessions.
Application protocols requiring high efficiency or initial broadcast bootstrap use UDP, while those requiring complete, ordered data delivery use TCP.

Key Concept

TCP vs UDP header structure, operational statefulness, and well-known application mapping
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Topics

TCP vs UDP Comparison and Protocols

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