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最新的 CCAH CCA-410 免費考試真題:
1. You install Cloudera Manager on a cluster where each host has 1 GB of RAM. All of the services show their status as concerning. However, all jobs submitted complete without an error.
Why is Cloudera Manager showing the concerning status KM the services?
A) A slave node's disk ran out of space
B) DataNode service instance has crashed.
C) The slave nodes are swapping.
D) The slave nodes, haven't sent a heartbeat in 60 minutes
2. You configure Hadoop cluster with both MapReduce frameworks, MapReduce v1 (MRv1) and MapReduce v2 (MRv2/YARN). Which two MapReduce (computational) daemons do you need to configure to run on your master nodes?
A) NodeManager
B) JournalNode
C) JobTracker
D) ResourceManager
E) ApplicationMaster
3. You set up the Hadoop cluster using NameNode Federation. One NameNode manages the/users namespace and one NameNode manages the/data namespace. What happens when client tries to write a file to/reports/myreport.txt?
A) The file writes fails silently; no file is written, no error is reported.
B) The file successfully writes to /report/myreport.txt. The metadata for the file is managed by the first NameNode to which the client connects.
C) The client throws an exception.
D) The file successfully writes to /users/reports/myreports/myreport.txt.
4. What occurs when you run a hadoop job specifying output directory for job output which already exists in HDFS?
A) an error will occur after the mappers have completed but before any reducers begin to run because the output path must not exist during the shuffle and sort.
B) the job will run successfully output from the reducers will be placed in a directory called job output -1
C) An error will occur immediately because the output directory must not already exist.
D) the job will run successfully. Output from the reducers will override the contents of existing directory
5. Your cluster implements hdfs high availability (HA) your two namenodes are named hadoop01 and hadoop02. What occurs when you execute the command:
Sudo -u hdfs haadmin -failover hadoop01 hadoop02
A) Hadoop02 becomes the standby namenode and hadoop01 becomes the active namenode
B) Hadoop01 is fenced, and hadoop02 becomes the active namenode
C) Hadoop01 becomes inactive and hadoop02 becomes the active namenode
D) Hadoop02 is fenced, and hadoop01 becomes active namenode
問題與答案:
問題 #1 答案: D | 問題 #2 答案: C,D | 問題 #3 答案: B | 問題 #4 答案: C | 問題 #5 答案: B |
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這考古題很好,我通過了第一次嘗試參加的CCA-410認證考試,它涵蓋了我需要知道的考試題庫,幫助我輕松通過!