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The Ethernet (II) frame uses the Frame Check Sequence (FCS) field for error detection. This field is a 4-byte cyclic redundancy check (CRC) value that is calculated based on the frame's contents before transmission. When the frame is received, the receiving device calculates the CRC again and compares it to the FCS value; if they do not match, an error is detected, indicating that the frame may have been corrupted during transmission.
What else can I help you with?
Which field of an Ethernet frame is used for error detection?
c) Check frame sequence. The FCS (4 bytes in length) field is used to detect errors in a frame
What primary three functions does data link layer encapsulation provide?
* addressing * error detection * frame delimiting
Error detection at data link layer is achieved by?
Error detection at data link level is achieved by using a Frame Check Sequence (FCS) method like Parity, Checksum Calculation or Cyclic Redundancy Check (CRC).
How does Ethernet handle error detection?
Each Ethernet frame contains a trailer with a cyclic redundancy check (CRC) of the frame contents. After reception of a frame, the receiving node creates a CRC from the bits in the frame to compare to the CRC value in the frame trailer. If these two CRC calculations match, the frame can be trusted as being received without error. The trusted frame will then be processed. A frame received with bad, nonmatching CRC's will be discarded.
How can the sender be informed about the corrupted bus topology when sending a frame to another computer?
In a bus topology, the sender can be informed of a corrupted frame through the use of error detection mechanisms, such as checksums or cyclic redundancy checks (CRC). When a frame is sent, the receiving computer performs an error check on the received data. If the data fails the check, the receiver can send an error message or a negative acknowledgment (NAK) back to the sender, indicating that the frame was corrupted and prompting the sender to retransmit the data. Additionally, if the bus topology uses collision detection, the sender may also detect a collision and infer that the frame was not successfully transmitted.
What is the purpose of the trailer field added to a frame in the Data Link?
--CORRECTION--from Network+ Guide To Networks, fifth edition. This marks the end of the frame. The "trailer" indicates the frame check sequence number. It is used for error control in a frame.
What is the function of the FCS field in an Ethernet frame explain how it is used how it is used to make a header?
In an Ethernet frame, FCS stands for "Frame Check Sequence". It is a four-octet field used to verify that the frame was received without loss or error. The method used for verification is known as a Cyclic Redundancy Check (CRC).
What is a primary function of the trailer information added by the data link layer encapsulation?
to represent the frames sequence numberI believe this is wrong in the 5th edition....Network+ Guide to Networks on page57 it states that protocols in the data link layer add a header to the front of each packet and a trailer to the end of each packet to make frames. (The trailer indicates where a frame ends.)paragraph 4
What is the purpose of the Frame Check Sequence field in a Data Link frame trailer?
The purpose of the FCS field is to transmit the extra checksum characters added to a frame in "xyz" protocol for error detection. The most popular algorithm I've used is the CRC (cyclic redundancy check) employed in things like ethernet or PPP on a routed network. Keep in mind that ethernet defines that the errored frame should be discarded, but ethernet takes no action to cause the frame to be retransmitted. Typically most tech's see it as unnecessary overhead and opt to rely on CSMA\CD or CSMA\CA if the route is not deemed to carry time sensitive data. Hope that clears things up a bit.
Threshold door frame metal detector?
CEIA Spa makes metal detection used by Governments, etc. CEIA Spa makes metal detection used by Governments, etc.
How does a computer on a LAN detect an error in a frame?
It calculates a check-sum from the data in the frame and sends it to the source for verification
What is the difference between the Ethernet frame preamble field and the IEEE 802.3 preamble and start of frame Delimiter fields?
1 byte for frame delimiter field in IEEE 802.3
