Security in Computing 5th Edition by Shari Lawrence Pfleeger, Charles P Pfleeger, Jonathan Margulies

Exercise 12

You are writing a procedure to add a node to a doubly linked list. The system on which this procedure is to be run is subject to periodic hardware failures. The list your program is to maintain is of great importance. Your program must ensure the integrity of the list, even if the machine fails in the middle of executing your procedure. Supply the individual statements you would use in your procedure to update the list. (Your list should be fewer than a dozen statements long.) Explain the effect of a machine failure after each instruction. Describe how you would revise this procedure so that it would restore the integrity of the basic list after a machine failure.

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Machine failure

After each instruction the machine failure occurs and results in the loss of the data and information stored on the main disk. Thus, such type of failure passes on through each of the elements within a system. As the network traffic halts or impaired between the large sections of network thus cause a failure or disconnection in the hardware and software.