Free Cloudera CCA-470 Practice Test & Real Exam Questions

Exam Code/Number: CCA-470
Exam Name/Title: Cloudera Certified Administrator for Apache Hadoop CDH4 Upgrade Exam (CCAH)
Certification Provider: Cloudera
Corresponding Certification: CCAH

Exam Questions: 87
Updated On: Jun 07, 2026

Question #1

You are running a Hadoop cluster with all monitoring facilities properly configured. Which scenario will go undetected?

A. The NameNode goes down.

B. MapReduce jobs that are causing excessive memory swaps.

C. HDFS is almost full.

D. Map or reduce tasks that are stuck in an infinite loop.

E. A DataNode is disconnected from the cluster.

Discussion 0

Correct Answer: D Vote an answer

Question #2

For a MapReduce job, on a cluster running MapReduce v1 (MRv1), what's the relationship between tasks and task templates?

A. There are always at least as many task attempts as there are tasks.

B. There are always at most as many tasks attempts as there are tasks.

C. The developer sets the number of task attempts on job submission.

D. There are always exactly as many task attempts as there are tasks.

Discussion 0

Correct Answer: D Vote an answer

Question #3

A client wants to read a file from HDFS. How does the data get from the DataNodes to the client?

A. The application reads the blocks directly from the DataNodes.

B. The blocks are sent to a single DataNode, then the application reads the blocks from that Data Node.

C. The NameNode reads the blocks from the DataNodes, and caches them. Then, the application reads the blocks from the NameNode.

Discussion 0

Correct Answer: A Vote an answer

Explanation: Only visible for Pass4Leader members. You can sign-up / login (it's free).

Question #4

What is the recommended disk configuration for slave nodes in your Hadoop cluster with 6 x 2 TB hard drives?

A. RAID 1+0

B. RAID 10

C. RAID 5

D. JBOD

Discussion 0

Correct Answer: D Vote an answer

Explanation: Only visible for Pass4Leader members. You can sign-up / login (it's free).

Question #5

On a cluster running MapReduce v1 (MRv1), a MapReduce job is given a directory of 10 plain text as its input directory. Each file is made up of 3 HDFS blocks. How many Mappers will run?

A. 10

B. We cannot say; the number of Mappers is determined by the developer

C. 1

D. 30

Discussion 0

Correct Answer: D Vote an answer

Question #6

Identify the function performed by the Secondary NameNode daemon on a cluster configured to run with a single NameNode.

A. In this configuration, the Secondary NameNode servers as alternate data channel for clients to reach HDFS, should the NameNode become too busy.

B. In this configuration, the Secondary NameNode performs a checkpoint operation on the files by the NameNode.

C. In this configuration, the Secondary NameNode performs deal-time backups of the NameNode.

D. In this configuration, the Secondary NameNode is standby NameNode, ready to failover and provide high availability.

Discussion 0

Correct Answer: B Vote an answer

Explanation: Only visible for Pass4Leader members. You can sign-up / login (it's free).

Question #7

How does the HDFS architecture provide redundancy?

A. Storing multiple replicas of data blocks on different DataNodes.

B. DataNodes make copies of their data blocks, and put them on different local disks.

C. Reliance on RAID at each datanode.

D. Reliance on SAN devices as a DataNode interface.

Discussion 0

Correct Answer: A Vote an answer

Explanation: Only visible for Pass4Leader members. You can sign-up / login (it's free).

Question #8

It is recommended that you run the HDFS balancer periodically. Why? (Choose 3)

A. To improve data locality for MapReduce tasks.

B. To help HDFS deliver consistent performance under heavy loads.

C. To ensure that there is capacity in HDTS for additional data.

D. To ensure that all blocks in the cluster are 128MB in size.

E. To ensure that there is consistent disk utilization across the DataNodes.

Discussion 0

Correct Answer: B,C,E Vote an answer

Explanation: Only visible for Pass4Leader members. You can sign-up / login (it's free).

Question #9

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 nine times

B. Two of the initial blocks will be 128MB

C. The third Initial block will be 44 MB

D. All three blocks will be 128MB

E. The file will consume 1152MB of space in the cluster

F. The file will be split into three blocks when initially written into the cluster

G. The third block will be 64MB

H. Each block will be replicated three times

Discussion 0

Correct Answer: B,C,F,H Vote an answer

Explanation: Only visible for Pass4Leader members. You can sign-up / login (it's free).

Download Free Cloudera CCA-470 Demo

Simply submit your e-mail address below to get started with our free demo of your Cloudera CCA-470 exam.