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Zorluk: KolayTCP vs UDP Comparison and Protocols

A network administrator needs to select a transport layer protocol for a real-time voice application where low latency is critical and missing packets should not be retransmitted. Which transport layer protocol satisfies these requirements?

  1. User Datagram Protocol (UDP)Cevap
  2. B
    Transmission Control Protocol (TCP)
  3. C
    Internet Control Message Protocol (ICMP)
  4. D
    Address Resolution Protocol (ARP)

Cevap

User Datagram Protocol (UDP) is correct because it operates as a connectionless transport protocol with low header overhead and no retransmission mechanism, preserving low latency for real-time voice data.
User Datagram Protocol (UDP) operates without establishing a session connection or tracking packet delivery. Because it omits sequencing and retransmissions, it minimizes latency, making it the preferred transport layer protocol for time-sensitive traffic like voice and video.

Adım Adım Çözüm

1
Identify application requirements
Real-time voice requires minimal latency and minimal overhead, and cannot afford the latency introduced by packet retransmissions.
Voice traffic relies on timely delivery; delayed retransmitted audio packets arrive too late to be usable.
2
Evaluate transport layer protocols
UDP provides lightweight, connectionless transmission without ordering or retransmission guarantees, whereas TCP adds latency via flow control and retransmissions.
UDP headers are only 8 bytes compared to TCP's 20-byte baseline header, eliminating setup handshakes and recovery delays.

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Connectionless vs Connection-Oriented Transport Protocols
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TCP vs UDP Comparison and Protocols

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