TCP/IP (Transmission Control Protocol/Internet Protocol) is a communication protocol used to connect different hosts in the Internet. It contains four layers, namely the network interface layer…

The correct answer is A. UDP. UDP (User Datagram Protocol) operates at the Transport Layer of the TCP/IP model, alongside TCP. The Transport Layer is responsible for end-to-end communication, segmentation, and (in TCP's case) reliability. HTTP, FTP, and SNMP all operate at the Application Layer, which…

Submitted by noor.lb· Apr 18, 2026Network Forensics

Question

TCP/IP (Transmission Control Protocol/Internet Protocol) is a communication protocol used to connect different hosts in the Internet. It contains four layers, namely the network interface layer. Internet layer, transport layer, and application layer. Which of the following protocols works under the transport layer of TCP/IP?

Options

AUDP
BHTTP
CFTP
DSNMP

How the community answered

(37 responses)

A
86% (32)
B
3% (1)
C
8% (3)
D
3% (1)

Explanation

UDP (User Datagram Protocol) operates at the Transport Layer of the TCP/IP model, alongside TCP. The Transport Layer is responsible for end-to-end communication, segmentation, and (in TCP's case) reliability. HTTP, FTP, and SNMP all operate at the Application Layer, which handles high-level protocols and user-facing services. A common mnemonic: the Transport Layer deals with 'how data is delivered' (TCP/UDP), while the Application Layer deals with 'what data is delivered' (HTTP/FTP/SNMP).

Topics

#TCP/IP model#Transport layer protocols#Networking fundamentals#UDP

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