Hadoop 平台的主要配置文件是（）。

A.yarn.resourcemanager.address
B.yarn.resourcemanager.scheduler.address
C.yarn.resourcemanager.admin.address
D.yarn.nodemanager.oux-services

A.http：//hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/core-default.xml
B.http：//hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/hdfs-default.xml
C.http：//hadoop.apache.org/docs/current/hadoop-mapreduce-client/hadoop-mapreduce-client-core/mapred-default.xml
D.http：//hadoop.apache.org/docs/current/hadoop-yarn/hadoop-yarn-common/yarn-default.xml

A.修改Master 节点authorized_keys 文件
B.修改Slave 节点authorized_keys 文件
C.验证Master 到每个Slave节点无密码登录
D.验证两个Slave 节点到Master 节点无密码登录