C100DBA MongoDB DBA认证考题讲解 mongodump command

  Screen Shot 2015-04-28 at 10.46.18 PM     Which of the following are true about the mongodump command ?
  1. Can backup data by connecting to a running mongos or mongod server
  2. Can backup data using only the data files for a MongoDB database
  3. Writes data in either BSON or JSON format
此为多选题 答案为 A 参考地址：https://docs.mongodb.org/manual/reference/program/mongodump/ 1、mongodump 导出数据使用的是BSON格式，而非JSON格式 2、 mongodump can read data from either mongod or mongos instances. mongodump 可以基于mongod/mongos读取数据