A.1

B.3

C.2

D.4

A.Support data insert, update and delete

B.SQL Compatibility

C.everything aboveA. True

D.Stable and high performance

E.long-term stability test

A.Partition

B.Reduce

C.Combine

D.Map

A.The client can maintain the visited regionLocation information to speed up the query

B.Clientcannot maintain visitedregionLocation information to speed up the query

C.The client needs to read the datato HMastor Involvement

D.customersNo need to read data on the sideHMaster participation

A.Syslog

B.SNMP

C.FTP

D.VPN