Network Access

Master network access: OSI model layers, data transmission, and TCP vs OSI comparison.

Bring the pairs of words together to support communication to divide into layers physical layer to transmit data receiving end To support our communication, the OSI model divides the functions of a data network into layers. Each layer works with the layers above and below to transmit data. Two layers of the OSI model are so closely tied, that according to the TCP model they are in essence one layer. Those two layers are the data link layer and the physical layer.On the sending device, it is the role of the data link layer to prepare data for transmission and control how that data accesses the physical media. However, the physical layer controls how the data is transmitted onto the physical media by encoding the binary digits that represent data into signals.On the receiving end, the physical layer receives signals across the connecting media. After decoding the signal back into data, the physical layer passes the frame to the data link layer for acceptance and processing. Read the short introduction and answer the questions:Q1. What is the purposes of layers in the OSI model?Q2. What layers in OSI model are in essence one layer?Q3. What is the role of the data link layer on the sending device?Q4. What is the role of the physical layer on the sending device?Q6. What is the role of the physical layer on the receiving device?Q7. What is the role of the data link layer on the receiving device? The OSI physical layer provides the means to transport the bits that make up a data link layer frame across the network media. This layer accepts a complete frame from the data link layer and encodes it as a series of signals that are transmitted onto the local media. The encoded bits that comprise a frame are received by either an end device or an intermediate device.The process that data undergoes from a source node to a destination node is:The user data is segmented by the transport layer, placed into packets by the network layer, and further encapsulated into frames by the data link layer.The physical layer encodes the frames and creates the electrical, optical, or radio wave signals that represent the bits in each frame.These signals are then sent on the media, one at a time.The destination node physical layer retrieves these individual signals from the media, restores them to their bit representations, and passes the bits up to the data link layer as a complete frame. Sign the labels:Destination NodePacketSignalFrameSource NodeSegmentsBits Destination Node Signal Source Node Encapsulation and De-encapsulation Segments Packet Frame Bits There are three basic forms of network media. Sort types of network media to the representation and groupings of bits for each type of media. Copper cable The signals are patterns of electrical pulses. Fiber-optic cable The signals are patterns of light. Wireless The signals are patterns of microwave transmissions TCP vs OSI Model: What's the Difference? Conduct a short research and provide your answer.