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Cloudera CCA-470 Exam Overview:
| Certification Vendor: | Cloudera |
| Exam Name: | Cloudera Certified Administrator for Apache Hadoop (CDH4 Upgrade Exam / CCAH) |
| Exam Number: | CCA-470 |
| Exam Duration: | 90 minutes |
| Passing Score: | 70% |
| Exam Format: | Multiple Choice, Scenario-based Questions |
| Related Certifications: | Cloudera Certified Administrator for Apache Hadoop (CCAH) Cloudera Certified Professional (CCP) Data Engineer |
| Available Languages: | English |
| Certificate Validity Period: | 2 years |
| Real Exam Qty: | 40-60 |
| Exam Price: | USD 295 |
| Sample Questions: | Cloudera CCA-470 Sample Questions |
| Exam Way: | Proctored online exam or authorized testing center (onsite) |
| Pre Condition: | Recommended prior experience with Hadoop administration and familiarity with Linux system operations; CCAH knowledge is typically assumed. |
| Official Syllabus URL: | https://www.cloudera.com/training/certification.html |
Cloudera CCA-470 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Hadoop Cluster Architecture | - Cluster roles and services
|
| Topic 2: Security and Cluster Management | - Authentication and authorization
|
| Topic 3: HDFS Administration | - Filesystem operations
|
| Topic 4: YARN and Resource Management | - Resource scheduling
|
| Topic 5: Cluster Installation and Upgrade (CDH4) | - Upgrade process
|
| Topic 6: Hadoop Ecosystem Tools | - Data ingestion tools
|
Cloudera Certified Administrator for Apache Hadoop CDH4 Upgrade Exam (CCAH) Sample Questions:
1. What information is stored on disk on the NameNode? (Choose 4)
A) A catalog of DataNodes and the blocks that are stored on them.
B) The status of the heartbeats of each DataNode.
C) File permissions of the files in HDFS.
D) Names of the files in HDFS.
E) An edit log of changes that have been made since the last backup of the NameNode.
F) The directory structure of the files in HDFS.
G) An edit log of changes that have been made since the last snapshot compaction by the Secondary NameNode.
2. Identify two features/issues that MapReduce v2 (MRv2/YARN) is designed to address:
A) Single point of failure in the NameNode.
B) Standardize on a single MapReduce API.
C) Resource pressure on the JobTrackr
D) HDFS latency.
E) Ability to run frameworks other than MapReduce, such as MPI.
F) Reduce complexity of the MapReduce APIs.
3. Which of the following statements arc accurate in describing features of Hadoop rack awareness? (Choose 2)
A) Configuration of rack awareness is accomplished using a configuration file. You cannot use a rack topology script.
B) HDFS is rack aware but MapReduce daemons are not.
C) Even for small clusters on a single rack, configuring rack awareness will improve performance.
D) Rack location is considered in the HDFS block placement policy.
E) Hadoop gives preference to intra-rack data transfer In order to conserve bandwidth.
4. Identify four characteristics of a 300MB file that has been written to HDFS with block size of 128MB and all other Hadoop defaults unchanged?
A) Each block will be replicated three times
B) Two of the initial blocks will be 128MB
C) The third block will be 64MB
D) The file will be split into three blocks when initially written into the cluster
E) The third Initial block will be 44 MB
F) The file will consume 1152MB of space in the cluster
G) Each block will be replicated nine times
H) All three blocks will be 128MB
5. Compare the hardware requirements of the NameNode with that of the DataNodes in a Hadoop cluster running MapReduce v1 (MRv1):
A) The NameNode requires more memory and no disk drives.
B) The NameNode requires less memory and less disk capacity than the DataNodes.
C) The NameNode requires more memory but less disk capacity.
D) The NameNode requires more memory and requires greater disk capacity than the DataNodes.
E) The NameNode and DataNodes should the same hardware configuration.
Solutions:
| Question # 1 Answer: A,D,F,G | Question # 2 Answer: C,E | Question # 3 Answer: D,E | Question # 4 Answer: A,B,D,E | Question # 5 Answer: C |
By Ward
