Describe how versions can be used to increase concurrency.
What will be an ideal response?
Multiversion timestamp ordering described . In effect, each write operation
creates a new version of a data item while retaining the old version. When a transaction
attempts to read a data item, the DBMS selects one of the versions that ensures serializability.
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Lisa, a technician, has configured a new switch that is remotely accessed using SSH. The switch is working properly but cannot be accessed remotely. Which of the following items is MOST likely missing in the configuration?
A. Port speed B. Cryptokey C. Data VLAN D. NAT/PAT
If you have Active Directory installed and suspect that it is damaged, or that the SYSVOL shared volumes are corrupted, use the ____ to restore damaged files and folders.
A. Safe Mode B. Last Known Good Configuration C. Directory Services Restore Mode D. Enable Boot Logging