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Data transmission uses encapsulation—breaking messages into packets with added controls. Frames include error-checking (FCS). Routers use ARP to map IPs to MACs. TCP connections start with a SYN, followed by SYN/ACK, then ACK for full handshake.

Mason Bennett
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Question1*CorrectWhich of the following is the process of breaking a message into packets, aciding controlsand other information, and then transmitting the message through the transmissionmedium?TransformationEncapsulationSegmentationSequencingExplanationEncapsulation is the process of breaking a message into packets, adding controls and otherinformation, and then transmitting the message through the transmission medium.The Transport layer adds sequencing and control information.The Internet layer converts the segments into packets.Data flows down through the layers of the OSI model on the sending system and istransformed at each layer.References2.3.2 Data Encapsulation Factsq_data_encapsulation_01_np6.question.fex

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"■sCorrectQuestion 2.What is the purpose of a frame check sequence (FCS) footer?Contain logical network addressesControl informationChecksum error detectionHold segment dataExplanationThe Link layer converts packets into frames, adding physical device addressing informationand a frame check sequence footer for error detection. It also converts the frames into bits(Os and 1s) for transmission across the transmission media.Control information is added at the Transport layer.The Transport layer breaks the data into pieces called segments.The Internet layer converts the segments into packets, adding logical network and deviceaddresses.References|_=j 2.3.2 Data Encapsulation Factsq_data_encapsuIation_fcs_np6.question.fexQuestion 3.CorrectWhich term does the OSI model use that's different from the TCP/IP model in reference tothe terms frame, packet, and segment?Presentation

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Session<1HTTPOProtocol data unit (PDU)ExplanationThe OSI model uses the term protocol data unit (PDU) instead of the terms framerpacket,and segment.The Presentation and Session layers are Layers 5 and 6 of the OSI model, respectively, anddo not correspond to the use of frame, packet, and segment in the TCP/IP model.HyperText Transfer Protocol (HTTP) is the protocol in the Application layer that supportsweb requests.Referencesi-2.3.2 Data Encapsulation Factsq_data_encapsulation_pdu_np6.question.fexQuestion4.Match each TCP/IP layers with its function.CorrectBreaks the data into pieces.TransportPrepares the data to be sent.ApplicationbOUt:3TCdOCPage 3 o1 12

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ApplicationAdds physical addresses.LinkAdds logical addresses.InternetKeyboard InstructionsExplanationThe Application layer prepares data to be sent through the network.The Transport layer breaks data into pieces called segments, adding sequencing andcontrol information.The Internet layer converts segments into packets, adding logical network and deviceaddresses.The Link layer converts packets into frames, adding physical device addressing informationand a frame check sequence footer for error detection. It also converts the frames into bits(Os and 1s) for transmission across the transmission media.References2.3.2 Data Encapsulation Factsq_data_encapsulation_tcpip_02_np6.question.fex
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