Examkin

Question

Difficulty: EasyConnection-Oriented vs Connectionless Protocols

A network technician is configuring traffic management rules for a set of new server applications. Which of the following operational characteristics are uniquely associated with User Datagram Protocol (UDP) as a connectionless transport layer protocol? (SELECT TWO)

  1. Low transmission overhead due to the absence of flow control and error recovery mechanismsAnswer
  2. Unreliable datagram delivery where dropped packets are not automatically retransmitted by the protocolAnswer
  3. C
    Three-way handshake session initialization prior to transmitting any data payload
  4. D
    Guaranteed sequence ordering of delivered segments using acknowledgment numbers
  5. E
    Operation exclusively at Layer 3 of the OSI model to route packets between remote networks

Answer

The correct characteristics of UDP as a connectionless protocol are low transmission overhead due to the absence of flow control and error recovery mechanisms, and unreliable datagram delivery where dropped packets are not automatically retransmitted by the protocol.
Connectionless protocols such as UDP operate on a best-effort basis without establishing a formal connection prior to transmission. Consequently, UDP has very low header overhead (8 bytes compared to TCP's 20 bytes) and does not provide transport-layer error recovery, sequence tracking, or retransmission of lost packets.

Step-by-Step Solution

1
Identify the key properties of connectionless transport layer protocols.
Connectionless protocols transmit data datagrams independently without establishing a preliminary session or state.
Understanding the fundamental architecture of UDP at Layer 4 is necessary to distinguish its features from TCP.
2
Evaluate each option against UDP mechanisms.
Options describing low overhead and lack of retransmissions describe UDP. Options describing handshakes, sequence guarantees, or Layer 3 operation are incorrect.
UDP avoids state tracking, acknowledgments, and connection handshakes to minimize latency and overhead.

Key Concept

Connection-Oriented vs Connectionless Transport Protocols (TCP vs UDP)
Rate this question

Topics

Connection-Oriented vs Connectionless Protocols

More questions from this topic