TRANSPORT LAYER
TRANSMISSION CONTROL PROTOCOL TCP
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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IP
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TCP/IP
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TCP
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UDP
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Detailed explanation-1: -Which layer 4 protocol is used for a Telnet connection? Explanation: Although Telnet does use TCP and IP (TCP/IP), the question specifically asks about layer 4, and IP works at layer 3. Telnet uses TCP at layer 4.
Detailed explanation-2: -TCP is used for a Telnet connection. Although Telnet uses both TCP and IP, the question specifically asks about the transport layer (layer 4) protocol, and IP operates at the network layer (layer 3), so TCP is the correct answer.
Detailed explanation-3: -Layer 4 of the OSI model, also known as the transport layer, manages network traffic between hosts and end systems to ensure complete data transfers. Transport-layer protocols such as TCP, UDP, DCCP, and SCTP are used to control the volume of data, where it is sent, and at what rate.
Detailed explanation-4: -Transport layer, layer 4. Unlike layer 3, there are really only two protocols of note found in layer 4: Transmission Control Protocol (TCP) and User Datagram Protocol (UDP).