C2090-102 Free Practice Test

Faced with a wide area network implementation, you have a need for asynchronous remote updates. Which one of the following would best address this use case?

1. A. GPFS Active File Management allows data access and modifications even when remote storage cluster is unavailable
2. B. HDFS Cluster rebalancing is compatible with data rebalancing scheme
3. C. A scheme might automatically move data from one DataNode to another if the free space on a DataNode falls below a certain threshold
4. D. GPFS File clones can be created from a regular file or a file in a snapshot using the mmclone command
5. E. HDFS NameNode The NameNode keeps an image of the entire file systemnamespace and file Blockmap in memor
6. F. This key metadata item is designed to be compact, such that a NameNode with 4 GB of RAM is plenty to support a huge number of files and directories

Correct Answer: C
Reference:
http://www-01.ibm.com/support/knowledgecenter/STXKQY_4.1.1/com.ibm.spectrum.scale.v4 r11.adv.d oc/bl1adv_clones.htm

Which of the following big data components makes all decisions regarding the replication of blocks?

1. A. Job Tracker
2. B. Edge Node
3. C. Name Node
4. D. Data Node

Correct Answer: A

Which of the following is a consideration in sizing an active archive Hadoop infrastructure?

1. A. replication factor within Hadoop
2. B. Reporting requirements
3. C. velocity or rate at which data is being generated
4. D. veracity or trustworthiness of the data

Correct Answer: B
Reference:
http://www.ibm.com/developerworks/library/ba-augment-data-warehouse3/

You need to create an online repository for a company. Data includes pdf, documents, html, images, etc. Total data volume is approximately 1PB. Online repository must be highly available. You are required to propose the least costly solution. Which technology would be preferred for this requirement?

1. A. Spark
2. B. RDBMS
3. C. Hadoop
4. D. IBM Infosphere Streams

Correct Answer: C

“The programming model for client developers will hide the complexity of interfacing to legacy systems” is an example of which of the following?

1. A. A use case
2. B. An architectural decision
3. C. A client imperative
4. D. An empathy statement

Correct Answer: B