What Is Contained In The Trailer Of a Data-Link Frame??
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What Is Contained in The Trailer of a Data-Link Frame??
Answer:
Option C is correct, the trailer of a data link frame contained is the error detection in the frame of FCS. The head of the title controls the information while the data word in the title contains the data, internet protocol header, and the transport layer PDU.
Datalink layer:
In the seven layers of the OSI model of the networking computer data link layer or layer 2 is the second layer in it, between the nodes this layer as a protocol transfers data on the segments of the network over the physical layer. The functionalities and the procedural role of the second layer are to transfer data between the computer network and also detect the errors in the physical layer.
Protocol data units also known as data link frames in the local network it does not cross the boundary of a network. High-layer functions such as global addressing and inter-network routing allow the data link to focus on addressing, local delivery, and media arbitration. The data link frame is opposite to the traffic cop. If the two devices use simultaneously it might be possible for frame collision occurs. So, to prevent such frame collisions data link frames, detect these collisions, and recover from them. Internet protocol/TCP, Ethernet. point-to-point protocol and HDLC are examples of data link frames or protocols.
Error and detection:
Datalink frame in addition to framing responsible for the detection and the recovery from errors in the transmission. The sender adds the code as the error detection code to the sent frame in this way receiver detects the error in transmission. When the receiver receives the frame, it matches the received detection code with the recalculated error detection code.
Error detection defined as it is the function that reckons the number of extra information bits communicates with the total number of bits. A parity bit is the simplest detection code it allows the receiver to point to the error that overblown the single bit in the transmission bits. Modern methods exist than the parity method to detect the error in a more precise way.