单项选择题
A full backup is performed every Sunday and incremental backups are performed daily Monday through Saturday.
How many tapes would be required to perform a full restore if a complete failure occurred on Thursday before the incremental backup？（）
A. 2
B. 3
C. 4
D. 5
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While installing a new PCI card the administrator touched the motherboard. While powering on the server, a series of beeps were emitted and the server did not POST. Which of the following could be done to prevent this problem?（）
A. Use ESD equipment.
B. Verify correct voltages are being supplied.
C. Use a system board tester to check for compatibility issues.
D. Install compatible PCI cards -
单项选择题
Whichofthefollowingarchivingmethodsonlybacksupdatathathaschangedsincethepreviousfull backup？（）
A. Snapshot
B. Incremental
C. Copy
D. Differential -
单项选择题
An administrator is creating a redundant environment for a current data center. A backup site must be available if the entire data center site should become unavailable. To reduce costs， this backup site does not need to be up and running at all times ready for failover. It must contain equipment and the ability to restore data from the data center. Which of the following site types should be considered to meet these requirements？ （）
A. Hot site
B. Warm site
C. Cold site
D. Active failover site
