MongoDB的可支持哪些分片方式?
A. 哈希分片
B. 范围分片
C. 区域分片
D. 预分片
MongoDB有哪些是副本集成员?
A. Primary
B. Slave
C. Secondary
D. arbiter
MongoDB数据删除后产生碎片可采用何种手段修复?
A. compact
B. monodump
C. move
D. restore
MongoDB写入策略包括?
A. Unacknowledged
B. Acknowledged
C. Journaled
D. Replica Acknowledged