• Author / Uploaded
• Mr. Anidra Katiyar

Citation preview

QUESTION 1 (1/1 point) 1. HDFS is designed for: Large files, streaming data access, and commodity hardware Large files, streaming data access, and commodity hardware – t

Large files, low latency data access, and commodity hardware Large files, streaming data access, and high-end hardware Small files, streaming data access, and commodity hardware

None of the options is correct You have used 2 of 2 submissions

QUESTION 2 (1 point possible) 2. The Hadoop distributed file system (HDFS) is the only distributed file system supported by Hadoop. True or false? True True – incorrect t False You have used 1 of 1 submissions

QUESTION 3 (1 point possible) 3. The input to a mapper takes the form < k1, v1 > . What form does the mapper's output take? < list(k2), v2 > < list(k2), v2 > - incorrect list( < k2, v2 > ) < k2, list(v2) > < k1, v1 > None of the options is correct You have used 2 of 2 submissions

QUESTION 4 (1 point possible) 4. What is Flume? A service for moving large amounts of data around a cluster soon after the data is produced. A distributed file system . A programming language that translates high-level queries into map tasks and reduce tasks. A platform for executing MapReduce jobs. A platform for executing MapReduce jobs. – incorrect t None of the options is correct You have used 2 of 2 submissions

QUESTION 5 (1/1 point) 5. What is the purpose of the shuffle operation in Hadoop MapReduce? To pre-sort the data before it enters each mapper node .

To distribute input splits among mapper nodes

. To transfer each mapper's output to the appropriate reducer node based on a partitioning function. To transfer each mapper's output to the appropriate reducer node based on a partitioning function. – correct To randomly distribute mapper output among reducer nodes. None of the options is correct FINAL CHECKYOUR ANSWER SAVEYOUR ANSWER You have used 1 of 2 submissions

QUESTION 6 (1 point possible) 6. Which of the following is a duty of the DataNodes in HDFS? Control the execution of an individual map task or a reduce task.

Maintain the file system tree and metadata for all files and directories. Maintain the file system tree and metadata for all files and directories. – incorrect Manage the file system namespace .

Store and retrieve blocks when told to by clients or the NameNode

. None of the options is correct You have used 2 of 2 submissions

QUESTION 7 (1 point possible) 7. Which of the following is a duty of the NameNode in HDFS? Control the MapReduce job from end-to-end Maintain the file system tree and metadata for all files and directories Store the block data Transfer block data from the data nodes to the clients Transfer block data from the data nodes to the clients – incorrect None of the options is correct You have used 2 of 2 submissions

QUESTION 8 (1/1 point) 8. Which component determines the specific nodes that a MapReduce task will run on? The NameNode The JobTracker The JobTracker – correct The TaskTrackers The JobClient None of the options is correct FINAL CHECKYOUR ANSWER SAVEYOUR ANSWER You have used 1 of 2 submissions

QUESTION 9 (1/1 point) 9). Which of the following characteristics is common to Pig, Hive, and Jaql? All translate high-level languages to MapReduce jobs All translate high-level languages to MapReduce jobs – correct All operate on JSON data structures All are data flow languages All support random reads/writes None of the options is correct FINAL CHECKYOUR ANSWER SAVEYOUR ANSWER You have used 1 of 2 submissions

QUESTION 10 (1/1 point) 10. Which of the following is NOT an open source project related to Hadoop? Pig UIMA Jackal Jackal - correct Avro FINAL CHECKYOUR ANSWER SAVEYOUR ANSWER You have used 1 of 2 submissions

Lucene

QUESTION 11 (1/1 point) 11. During the replication process, a block of data is written to all specified DataNodes in parallel. True or false? True False False - correct You have used 1 of 1 submissions

QUESTION 12 (1 point possible) 12. With IBM BigInsights, Hadoop components can be started and stopped from a command line and from the Ambari Console. True or false?

True False False - incorrect You have used 1 of 1 submissions

QUESTION 13 (1 point possible) 13. When loading data into HDFS, data is held at the NameNode until the block is filled and then the data is sent to a DataNode. True or false? True True - incorrect False You have used 1 of 1 submissions

QUESTION 14 (1 point possible) 14. Which of the following is true about the Hadoop federation? Uses JournalNodes to decide the active NameNode Allows non-Hadoop programs to access data in HDFS Allows non-Hadoop programs to access data in HDFS - incorrect

Allows multiple NameNodes with their own namespaces to share a

pool of DataNodes Implements a resource manager external to all Hadoop frameworks You have used 2 of 2 submissions

QUESTION 15 (1 point possible) 15. Which of the following is true about Hadoop high availability? Uses JournalNodes to decide the active NameNode Allows non-Hadoop programs to access data in HDFS Allows non-Hadoop programs to access data in HDFS - incorrect

Allows multiple NameNodes with their own namespaces to share a

pool of DataNodes Implements a resource manager external to all Hadoop frameworks You have used 2 of 2 submissions

QUESTION 16

(1 point possible) 16. Which of the following is true about YARN? Uses JournalNodes to decide the active NameNode Allows non-Hadoop programs to access data in HDFS Allows non-Hadoop programs to access data in HDFS - incorrect

Allows multiple NameNodes with their own namespaces to share a

pool of DataNodes Implements a resource manager external to all Hadoop frameworks You have used 2 of 2 submissions

QUESTION 17 (1 point possible) 17. Which of the following sentences is true? Hadoop is good for OLTP, DSS, and big data

Hadoop includes open source

components and closed source components Hadoop is a new technology designed to replace relational databases Hadoop is a new technology designed to replace relational databases - incorrect All of the options are correct is correct You have used 2 of 2 submissions

None of the options

QUESTION 18 (1/1 point) 18. In which of these scenarios should Hadoop be used? Processing billions of email messages to perform text analytics Processing billions of email messages to perform text analytics - correct a per-minute basis

Obtaining stock price trends on

Processing weather sensor information to predict a hurricane

path Analyzing vital signs of a baby in real time None of the options is correct FINAL CHECKYOUR ANSWER SAVEYOUR ANSWER You have used 1 of 2 submissions