C100DBA MongoDB DBA认证考题讲解 mongodump command

C100DBA MongoDB DBA认证考题讲解 mongodump command

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