Hadoop Architecture — Learn free

Self-check

Questions 1–10 of 10

1. In the Big Data ecosystem, which component is described as the backbone and the main reason for Big Data's popularity?
Question 1A. NoSQL databasesB. In-memory processingC. MPP enginesD. HadoopE. The 3 Vs
2. Hadoop is a framework based on which programming language?
Question 2A. JavaB. PythonC. ScalaD. C++E. Go
3. What is meant by the statement that Hadoop is "an empty storage" rather than a solution?
Question 3A. Hadoop cannot store unstructured dataB. Hadoop only works after it is connected to a mainframeC. Data must be loaded into it first, just as with a traditional database, before any analytics can be generatedD. Hadoop stores data but cannot replicate itE. Hadoop has no file system of its own
4. What lesson does the story of Big Data being sold as "magic" for its first five to seven years teach about adopting a new technology?
Question 4A. Wait for the technology to reach version 3 before buyingB. Always buy from the largest vendorC. Adopt only open-source technologyD. Replace mainframes before anything elseE. First hire a specialist internally, then invest
5. Which capabilities made mainframe systems suitable for critical systems in large organisations?
Question 5A. Low cost and small physical sizeB. High availability, fault tolerance and massive parallel processingC. Built-in social media connectorsD. Support for commodity hardwareE. Automatic schema evolution
6. Why did organisations turn to Hadoop storage when social media began generating data in milliseconds?
Question 6A. Mainframes could not connect to the internetB. Hadoop offered better data security than mainframesC. Regulators required open-source storageD. They needed mainframe-like capabilities at a cheaper rate on commodity hardwareE. Hadoop removed the need to load data before analysis
7. How does Hadoop deliver a highly available service on a cluster of computers that may each be prone to failure?
Question 7A. The Hadoop library itself detects and handles failures at the application layerB. It requires enterprise-grade hardware with redundant powerC. It keeps a single master copy of every file on the most reliable nodeD. It pauses all processing until a failed node is repairedE. It relies on the operating system to restart failed machines
8. Which of the following is NOT listed among the terms of Hadoop architecture?
Question 8A. HDFSB. YARNC. MapReduceD. Replication FactorE. Kafka
9. According to the figure quoted in I Am Datapedia!, roughly how much data does Twitter alone generate per day?
Question 9A. 52 GBB. 5 TBC. 52 TBD. 520 TBE. 52 PB
10. Which release is cited as the latest version of Apache Hadoop?
Question 10A. Apache Hadoop 2.7.1B. Apache Hadoop 3.3.4C. Apache Hadoop 1.0D. Apache Hadoop 4.0E. Apache Hadoop 3.0.0