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Question :-

A rollout plan from engineering has been sent to the NOC for deployment. Part of the plan involves a complex software upgrade to a network element. The method of procedure provided by engineering is nearly 100 individual steps long. Where do you expect to find backout procedures to be specified?
after each step that causes a change to the network
after every 20 (+/- 5) steps
after the midway point
after the method of procedure is completed
both after the midway point and after the method of procedure is completed

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