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Cloudera CCA-470 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| YARN and Resource Management | - Resource scheduling
|
| HDFS Administration | - Maintenance and troubleshooting
|
| Cluster Installation and Upgrade (CDH4) | - Installation and configuration
|
| Hadoop Ecosystem Tools | - Data processing tools
|
| Security and Cluster Management | - Authentication and authorization
|
| Hadoop Cluster Architecture | - Core Hadoop components overview
|
Cloudera Certified Administrator for Apache Hadoop CDH4 Upgrade Exam (CCAH) Sample Questions:
Which of the following scenarios makes HDFS unavailable?
- A. JobTracker failure
- B. Secondary NameNode failure
- C. DataNode failure
- D. NameNode failure
- E. TaskTracker failure
Correct Answer: C 🗳️
Explanation: Only visible for PassSureExam members. You can sign-up / login (it's free).
Your cluster Mode size is set to 128MB. A client application (client application A) is writing a 500MB file to HDFS. After client application A has written 300MB of data, another client (client application B) attempts to read the file. What is the effect of a second client requesting a file during a write?
- A. Client application on B can read the 300MB that has been written so far.
- B. Client application B returns an error
- C. Application B can read 256MB of the file
- D. Client application B must wait until the entire file has been written, and will then read its entire contents.
Correct Answer: D 🗳️
For a MapReduce job, on a cluster running MapReduce v1 (MRv1), what's the relationship between tasks and task templates?
- A. There are always exactly as many task attempts as there are tasks.
- B. The developer sets the number of task attempts on job submission.
- C. There are always at most as many tasks attempts as there are tasks.
- D. There are always at least as many task attempts as there are tasks.
Correct Answer: A 🗳️
What information is stored on disk on the NameNode? (Choose 4)
- A. Names of the files in HDFS.
- B. File permissions of the files in HDFS.
- C. An edit log of changes that have been made since the last backup of the NameNode.
- D. An edit log of changes that have been made since the last snapshot compaction by the Secondary NameNode.
- E. A catalog of DataNodes and the blocks that are stored on them.
- F. The directory structure of the files in HDFS.
- G. The status of the heartbeats of each DataNode.
Correct Answer: A,D,E,F 🗳️
How must you format the underlying filesystem of your Hadoop cluster's slave nodes running on Linux?
- A. They must be formatted as either ext3 or ext4
- B. They must not be formatted - - HDFS will format the filesystem automatically
- C. They may be formatted in nay Linux filesystem
- D. They must be formatted as HDFS
Correct Answer: A 🗳️
Explanation: Only visible for PassSureExam members. You can sign-up / login (it's free).
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