a) black-box
b) white-box
c) grey-box
d) none of the mentioned
Answer: a
Explanation: The system is considered as a black box whose internal details are not known that is, only its visible external (input/output) behavior is documented.
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The system periodically performs checkpoints that consists of the following operation(s) ____________
The undo and redo operations must be _________ to guarantee correct behaviour, even if a failure occurs during recovery process.
An actual update is not allowed to a data item ____________
In the write ahead logging a _____________ is maintained.
Write ahead logging is a way ____________
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