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200-301 · Question #867

How do TCP and UDP fit into a query-responsible model?

The correct answer is B. TCP establishes a connection prior to sending data, and UDP sends immediately. In a query-response model, TCP establishes a dedicated connection before any data is sent, whereas UDP transmits data immediately without a prior connection setup.

Submitted by takeshi77· Mar 5, 2026Network Fundamentals

Question

How do TCP and UDP fit into a query-responsible model?

Options

  • ATCP avoids using sequencing and UDP avoids using acknowledgments
  • BTCP establishes a connection prior to sending data, and UDP sends immediately
  • CTCP encourages out-of-order packet delivery, and UDP prevents re-ordering
  • DTCP uses error detection for packets, and UDP uses error recovery.

How the community answered

(45 responses)
  • A
    2% (1)
  • B
    91% (41)
  • C
    4% (2)
  • D
    2% (1)

Why each option

In a query-response model, TCP establishes a dedicated connection before any data is sent, whereas UDP transmits data immediately without a prior connection setup.

ATCP avoids using sequencing and UDP avoids using acknowledgments

This is incorrect; TCP *uses* sequencing for ordered delivery, and UDP *avoids* using acknowledgments as part of its connectionless nature.

BTCP establishes a connection prior to sending data, and UDP sends immediatelyCorrect

TCP is a connection-oriented protocol, meaning it initiates a three-way handshake to establish a reliable connection between the sender and receiver before any application data is transferred. In contrast, UDP is connectionless; it sends data datagrams directly to the destination without any prior setup or guarantee of delivery, effectively sending immediately.

CTCP encourages out-of-order packet delivery, and UDP prevents re-ordering

This is incorrect; TCP ensures in-order delivery and prevents out-of-order packet delivery, whereas UDP does not guarantee order, and packets can arrive out of sequence.

DTCP uses error detection for packets, and UDP uses error recovery.

This is incorrect; TCP uses both error detection (checksums) and error recovery (retransmissions) for reliability, while UDP primarily uses error detection (checksums) but offers no error recovery mechanisms.

Concept tested: TCP vs. UDP connection establishment

Source: https://learn.microsoft.com/en-us/windows-server/networking/technologies/network-subsystem/tcp-udp-feature-overview

Topics

#TCP#UDP#Transport layer#Connection-oriented

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