The correct answer is: A. Low and high water mark.
A low water mark is the minimum amount of data that must be present in a buffer before it can be used. A high water mark is the maximum amount of data that can be stored in a buffer. By tracking the low and high water marks, it is possible to detect and correct errors in the linear buffer.
A pointer is a variable that stores the current position in a buffer. It is used to keep track of where data is being written to or read from the buffer. However, a pointer cannot be used to detect or correct errors in the linear buffer.
A high water mark is the maximum amount of data that can be stored in a buffer. It is used to prevent the buffer from overflowing. However, a high water mark cannot be used to detect or correct errors in the linear buffer.
A
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