Which set of Amazon S3 features helps to prevent and recover from accidental data loss?
A. Object lifecycle and service access logging
B. Object versioning and Multi-factor authentication
C. Access controls and server-side encryption
D. Website hosting and Amazon S3 policies
Answer: B. Object versioning and Multi-factor authentication
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Transaction processing enables a program to ________ or ________ a transaction based on whether the transaction was successful.
a. save, delete b. commit, rollback c. save, rollback d. commit, delete
It is recommended that a copy of a data backup be stored at an off-site location.
Answer the following statement true (T) or false (F)
A system design where the server performs all the processing is described as _____.
A. mainframe architecture B. dataflow architecture C. workstation architecture D. cache architecture
Which of the following statements is consistent with Substage stage 1 of the sensorimotor period