If an error occurs that prevents a transaction from completing, transaction-based logging allows the system to “________” the system to the state before the transaction began.
a) roll back
b) unwind
c) reset
d) restore
a) roll back
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When assigning a value to a variable in a Bash script, you separate the variable from its value with the ____ character.
Fill in the blank(s) with the appropriate word(s).
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