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Home/ Questions/Q 2682
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Sneha Singh
Sneha SinghLevel 40
Asked: August 3, 20212021-08-03T16:24:32+05:30 2021-08-03T16:24:32+05:30

Which Switching Method Uses The Crc Value In A Frame?

Which Switching Method Uses The Crc Value In A Frame?
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    1. Network Classmate Bronze
      2021-08-04T00:32:44+05:30Added an answer on August 4, 2021 at 12:32 am

      Which switching method uses the CRC value in a frame?
      The switch can receive the complete frame when we use the store and forward method to its destination address.

      The store and forward method is used in the CRC value in the frame. Let us learn different types of switching methods. It uses different switching methods for the switching traffic. We use these switching methods to check the frame before it gets passed. We have three different types of switching methods. They are
      • Cut through method
      • Fragment free method
      • store and forward method
      As we said earlier the store and forward method is used for the CRC value in the frame. Let us learn how the store and forward method works. Before we send the frame, it reads the information that is present in the frame. After reading the frame it stores the information into the buffer.

      To check the errors that are present in the frame, the cyclic redundancy check is prepared. If we find any errors in the frame, the frame is gets dropped. But if we do not find any errors, it is checked by the switching table and the frames get forwarded.

      Let us take an example to understand the concept in detail. If we are working as security in charge in any particular area. To avoid entering the wrong people, we must not only identify the image of the person, but also the name and address of the person. But this method consumes a large amount of time and leads to greater delay. This is the working of the store forward switching method. The default setting of the store forward switching method is 2900 series of switches.

      The store and forward switching method want to make sure and it’s not corrupt before it starts forward. Or else it would waste a lot of bandwidth in it. If we forward any corrupted frames, it waits for the entire frame to be sent and then checks the frame sequence. And now switch is going to calculate an algorithm and creates an FCS on its own. FCS is nothing but the frame check sequence. Here if the FCS in the frame is equal to the FCS calculated by the switch. Then the switch concludes that it is a reasonably valid frame.

      We can say that store and forward is a telecommunication technique where we can send the information to an intermediate station. We keep the information at the intermediate station and later we send it to the final destination address. The intermediate station or a node verifies the integrity of the message before it’s going to forward to it.

      This Technique is used in networks with connectivity especially in environments that require high mobility. It is also suitable in situations when there is a long delay in the transmission and having high error rates or if there is no end-to-end connection.

      There are no real-time services are provided for this type of network. Normally the store and forward networks predate the use of the networks. We use point-to-point equipment to send the messages which we are stored at the receiving end.

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