Advantages and disadvantages of component redundancy reasons
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Not sure if anyone can help me with this. Attached is an assignment that I have completed for my Global Operation class. The assignment is asking me to test the reliability of a certain device using component reliability calculation. I was hoping someone can review my result to see if they look correct and also assist in responding to question number 5.
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Question 5 needs only simple advantages and disadvantages of component redundancy reasons
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"A third approach is to install two copies of B 13 on active and standby switches. The active switch executes, whereas the inactive instance does not. However, the standby switch..."
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QUESTION NO 4.
Several types of component redundancy schemes enable the army to reduce switch breakdown resulting from unplanned B13 failures. One such approach (similar to the 1:1 hardware redundancy scheme) is to instantiate two identical copies of components on active and standby switches. The two switches operate independently without any inter-switch communication, and both switches send/receive the impulse. For example, in the incoming direction, electrical impulses are replicated and passed on to both switches. In the outgoing direction, electrical impulses from the standby switch are not accepted.
A second scheme (a variant of the previous approach) is to instantiate two identical copies of the B13. The two switches execute in complete lock step. When an electrical impulse is received, it is processed in identical fashion and at the exact same instant by the active and the standby switch.
A third approach is to install two copies of B 13 on active and standby switches. The active switch executes, whereas the inactive instance does not. However, the standby switch maintains partial state of the active switch by receiving synchronization electrical impulses. For example, the active switch of radio device establishes contact, exchanges switching information with other switches, and helps the army in its ...
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