To maintain control of updated rows for commit processing
To ensure only committed changes are altered by another application
To allow two applications to update the same row of data simultaneously
To prevent multiple applications from accessing the same data simultaneously
第1题：
Which of the following best describes a hash function？（）
第2题：
Which of the following describes the model used by the Geodetic Extender?（）
第3题：
A.It shows the total size of the index row
B.It shows how many columns in the index are examined
C.It shows the number of characters indexed in the key
D.It shows how many bytes will be used from each index row
第4题：
Which of the following BEST describes RAID 1?（）
第5题：
Which of the following would BEST optimize a computer that is heavily used? （）
第6题：
Which of the following BEST describes a hub?（）
第7题：
Which of the following BEST describes RAID 10？（）
第8题：
A.CLOB
B.BLOB
C.Hierarchically
D.Rows and columns
第9题：
Which of the following BEST describes a benefit of RAID 0?（）
第10题：
A technician needs to troubleshoot connectivity between two devices located on the same network. Which of the following BEST describes the type of protocol being used?（）