If a node receives a frame and the calculated CRC does not match the CRC in the FCS, what action will the node take?
- Drop the frame
- Reconstruct the frame from the CRC
- Forward the frame as it is to the next host
- Disable the interface on which the frame arrives
Explanation: When the frame arrives at the destination node, the receiving node calculates its own logical summary, or CRC, of the frame. The receiving node compares the two CRC values. If the two values are the same, the frame is considered to have arrived intact. If the CRC value in the FCS differs from the CRC calculated at the receiving node, the frame is discarded.
Exam with this question: CCNA 1 ITNv6 Chapter 4: Check Your Understanding
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